interpreter.cpp 286 line convert vector label strings to vector LabelId, possible changes to LabelPermission

.gitignore

@@ -9,6 +9,7 @@
 *.swn
 *.swo
 *.swp
+
 *~
 .DS_Store
 .gdb_history
@@ -26,6 +27,7 @@ src/query/frontend/opencypher/generated/
 tags
 ve/
 ve3/
+.cache/
 perf.data*
 TAGS
 *.apollo_measurements

config/generate.py

@@ -18,14 +18,16 @@ WIDTH = 80
 
 def wrap_text(s, initial_indent="# "):
     return "\n#\n".join(
-        map(lambda x: textwrap.fill(x, WIDTH, initial_indent=initial_indent,
-                                    subsequent_indent="# "), s.split("\n")))
+        map(
+            lambda x: textwrap.fill(x, WIDTH, initial_indent=initial_indent, subsequent_indent="# "),
+            s.split("\n"),
+        )
+    )
 
 
 def extract_flags(binary_path):
     ret = {}
-    data = subprocess.run([binary_path, "--help-xml"],
-                          stdout=subprocess.PIPE).stdout.decode("utf-8")
+    data = subprocess.run([binary_path, "--help-xml"], stdout=subprocess.PIPE).stdout.decode("utf-8")
     root = ET.fromstring(data)
     for child in root:
         if child.tag == "usage" and child.text.lower().count("warning"):
@@ -46,8 +48,7 @@ def apply_config_to_flags(config, flags):
     for modification in config["modifications"]:
         name = modification["name"]
         if name not in flags:
-            print("WARNING: Flag '" + name + "' missing from binary!",
-                  file=sys.stderr)
+            print("WARNING: Flag '" + name + "' missing from binary!", file=sys.stderr)
             continue
         flags[name]["default"] = modification["value"]
         flags[name]["override"] = modification["override"]
@@ -75,8 +76,9 @@ def extract_sections(flags):
     else:
         sections.append((current_section, current_flags))
     sections.append(("other", other))
-    assert set(sum(map(lambda x: x[1], sections), [])) == set(flags.keys()), \
-        "The section extraction algorithm lost some flags!"
+    assert set(sum(map(lambda x: x[1], sections), [])) == set(
+        flags.keys()
+    ), "The section extraction algorithm lost some flags!"
     return sections
 
 
@@ -89,8 +91,7 @@ def generate_config_file(sections, flags):
             helpstr = flag["meaning"] + " [" + flag["type"] + "]"
             ret += wrap_text(helpstr) + "\n"
             prefix = "# " if not flag["override"] else ""
-            ret += prefix + "--" + flag["name"].replace("_", "-") + \
-                "=" + flag["default"] + "\n\n"
+            ret += prefix + "--" + flag["name"].replace("_", "-") + "=" + flag["default"] + "\n\n"
         ret += "\n"
     ret += wrap_text(config["footer"])
     return ret.strip() + "\n"
@@ -98,13 +99,16 @@ def generate_config_file(sections, flags):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
-    parser.add_argument("memgraph_binary",
-                        help="path to Memgraph binary")
-    parser.add_argument("output_file",
-                        help="path where to store the generated Memgraph "
-                        "configuration file")
-    parser.add_argument("--config-file", default=CONFIG_FILE,
-                        help="path to generator configuration file")
+    parser.add_argument("memgraph_binary", help="path to Memgraph binary")
+    parser.add_argument(
+        "output_file",
+        help="path where to store the generated Memgraph " "configuration file",
+    )
+    parser.add_argument(
+        "--config-file",
+        default=CONFIG_FILE,
+        help="path to generator configuration file",
+    )
 
     args = parser.parse_args()
     flags = extract_flags(args.memgraph_binary)

query_modules/example.py

@@ -7,13 +7,11 @@ import copy
 
 
 @mgp.read_proc
-def procedure(context: mgp.ProcCtx,
-              required_arg: mgp.Nullable[mgp.Any],
-              optional_arg: mgp.Nullable[mgp.Any] = None
-              ) -> mgp.Record(args=list,
-                              vertex_count=int,
-                              avg_degree=mgp.Number,
-                              props=mgp.Nullable[mgp.Map]):
+def procedure(
+    context: mgp.ProcCtx,
+    required_arg: mgp.Nullable[mgp.Any],
+    optional_arg: mgp.Nullable[mgp.Any] = None,
+) -> mgp.Record(args=list, vertex_count=int, avg_degree=mgp.Number, props=mgp.Nullable[mgp.Map]):
     """
     This example procedure returns 4 fields.
 
@@ -37,7 +35,7 @@ def procedure(context: mgp.ProcCtx,
     if isinstance(required_arg, (mgp.Edge, mgp.Vertex)):
         props = dict(required_arg.properties.items())
     elif isinstance(required_arg, mgp.Path):
-        start_vertex, = required_arg.vertices
+        (start_vertex,) = required_arg.vertices
         props = dict(start_vertex.properties.items())
     # Count the vertices and edges in the database; this may take a while.
     vertex_count = 0
@@ -51,15 +49,13 @@ def procedure(context: mgp.ProcCtx,
     # Copy the received arguments to make it equivalent to the C example.
     args_copy = [copy.deepcopy(required_arg), copy.deepcopy(optional_arg)]
     # Multiple rows can be produced by returning an iterable of mgp.Record.
-    return mgp.Record(args=args_copy, vertex_count=vertex_count,
-                      avg_degree=avg_degree, props=props)
+    return mgp.Record(args=args_copy, vertex_count=vertex_count, avg_degree=avg_degree, props=props)
 
 
 @mgp.write_proc
-def write_procedure(context: mgp.ProcCtx,
-                    property_name: str,
-                    property_value: mgp.Nullable[mgp.Any]
-                    ) -> mgp.Record(created_vertex=mgp.Vertex):
+def write_procedure(
+    context: mgp.ProcCtx, property_name: str, property_value: mgp.Nullable[mgp.Any]
+) -> mgp.Record(created_vertex=mgp.Vertex):
     """
     This example procedure creates a new vertex with the specified property
     and connects it to all existing vertex which has the same property with

query_modules/graph_analyzer.py

@@ -4,15 +4,17 @@ from collections import OrderedDict
 from itertools import chain, repeat
 from inspect import cleandoc
 from typing import List, Tuple
+
 try:
     import networkx as nx
 except ImportError as import_error:
-    sys.stderr.write((
-        '\n'
-        'NOTE: Please install networkx to be able to use graph_analyzer '
-        'module. Using Python:\n'
-        + sys.version +
-        '\n'))
+    sys.stderr.write(
+        (
+            "\n"
+            "NOTE: Please install networkx to be able to use graph_analyzer "
+            "module. Using Python:\n" + sys.version + "\n"
+        )
+    )
     raise import_error
 # Imported last because it also depends on networkx.
 from mgp_networkx import MemgraphMultiDiGraph  # noqa E402
@@ -23,16 +25,14 @@ _MAX_LIST_SIZE = 10
 
 @mgp.read_proc
 def help() -> mgp.Record(name=str, value=str):
-    '''Shows manual page for graph_analyzer.'''
+    """Shows manual page for graph_analyzer."""
     records = []
 
     def make_records(name, doc):
-        return (mgp.Record(name=n, value=v) for n, v in
-                zip(chain([name], repeat('')), cleandoc(doc).splitlines()))
+        return (mgp.Record(name=n, value=v) for n, v in zip(chain([name], repeat("")), cleandoc(doc).splitlines()))
 
     for func in (help, analyze, analyze_subgraph):
-        records.extend(make_records("Procedure '{}'".format(func.__name__),
-                                    func.__doc__))
+        records.extend(make_records("Procedure '{}'".format(func.__name__), func.__doc__))
 
     for m, v in _get_analysis_mapping().items():
         records.extend(make_records("Analysis '{}'".format(m), v.__doc__))
@@ -41,10 +41,8 @@ def help() -> mgp.Record(name=str, value=str):
 
 
 @mgp.read_proc
-def analyze(context: mgp.ProcCtx,
-            analyses: mgp.Nullable[List[str]] = None
-            ) -> mgp.Record(name=str, value=str):
-    '''
+def analyze(context: mgp.ProcCtx, analyses: mgp.Nullable[List[str]] = None) -> mgp.Record(name=str, value=str):
+    """
     Shows graph information.
 
     In case of multiple results, only the first 10 will be shown.
@@ -57,19 +55,20 @@ def analyze(context: mgp.ProcCtx,
 
     Example call (with parameter):
         CALL graph_analyzer.analyze(['nodes', 'edges']) YIELD *;
-    '''
+    """
     g = MemgraphMultiDiGraph(ctx=context)
     recs = _analyze_graph(context, g, analyses)
     return [mgp.Record(name=name, value=value) for name, value in recs]
 
 
 @mgp.read_proc
-def analyze_subgraph(context: mgp.ProcCtx,
-                     vertices: mgp.List[mgp.Vertex],
-                     edges: mgp.List[mgp.Edge],
-                     analyses: mgp.Nullable[List[str]] = None
-                     ) -> mgp.Record(name=str, value=str):
-    '''
+def analyze_subgraph(
+    context: mgp.ProcCtx,
+    vertices: mgp.List[mgp.Vertex],
+    edges: mgp.List[mgp.Edge],
+    analyses: mgp.Nullable[List[str]] = None,
+) -> mgp.Record(name=str, value=str):
+    """
     Shows subgraph information.
 
     In case of multiple results, only the first 10 will be shown.
@@ -91,36 +90,40 @@ def analyze_subgraph(context: mgp.ProcCtx,
         CALL graph_analyzer.analyze_subgraph(nodes, edges, ['nodes', 'edges'])
         YIELD *
         RETURN name, value;
-    '''
+    """
     vertices, edges = map(set, [vertices, edges])
     g = nx.subgraph_view(
         MemgraphMultiDiGraph(ctx=context),
         lambda n: n in vertices,
-        lambda n1, n2, e: e in edges)
+        lambda n1, n2, e: e in edges,
+    )
     recs = _analyze_graph(context, g, analyses)
     return [mgp.Record(name=name, value=value) for name, value in recs]
 
 
 def _get_analysis_mapping():
-    return OrderedDict([
-                        ('nodes', _number_of_nodes),
-                        ('edges', _number_of_edges),
-                        ('bridges', _bridges),
-                        ('articulation_points', _articulation_points),
-                        ('avg_degree', _avg_degree),
-                        ('sorted_nodes_degree', _sorted_nodes_degree),
-                        ('self_loops', _self_loops),
-                        ('is_bipartite', _is_bipartite),
-                        ('is_planar', _is_planar),
-                        ('is_biconnected: ', _is_biconnected),
-                        ('is_weakly_connected', _is_weakly_connected),
-                        ('number_of_weakly_components', _weakly_components),
-                        ('is_strongly_connected', _is_strongly_connected),
-                        ('strongly_components', _strongly_components),
-                        ('is_dag', _is_dag),
-                        ('is_eulerian', _is_eulerian),
-                        ('is_forest', _is_forest),
-                        ('is_tree', _is_tree)])
+    return OrderedDict(
+        [
+            ("nodes", _number_of_nodes),
+            ("edges", _number_of_edges),
+            ("bridges", _bridges),
+            ("articulation_points", _articulation_points),
+            ("avg_degree", _avg_degree),
+            ("sorted_nodes_degree", _sorted_nodes_degree),
+            ("self_loops", _self_loops),
+            ("is_bipartite", _is_bipartite),
+            ("is_planar", _is_planar),
+            ("is_biconnected: ", _is_biconnected),
+            ("is_weakly_connected", _is_weakly_connected),
+            ("number_of_weakly_components", _weakly_components),
+            ("is_strongly_connected", _is_strongly_connected),
+            ("strongly_components", _strongly_components),
+            ("is_dag", _is_dag),
+            ("is_eulerian", _is_eulerian),
+            ("is_forest", _is_forest),
+            ("is_tree", _is_tree),
+        ]
+    )
 
 
 def _get_analysis_func(name: str):
@@ -132,20 +135,15 @@ def _get_analysis_funcs():
     return _get_analysis_mapping().values()
 
 
-def _analyze_graph(context: mgp.ProcCtx,
-                   g: nx.MultiDiGraph,
-                   analyses: List[str]
-                   ) -> List[Tuple[str, str]]:
+def _analyze_graph(context: mgp.ProcCtx, g: nx.MultiDiGraph, analyses: List[str]) -> List[Tuple[str, str]]:
 
-    functions = (_get_analysis_funcs() if analyses is None
-                 else [_get_analysis_func(name) for name in analyses])
+    functions = _get_analysis_funcs() if analyses is None else [_get_analysis_func(name) for name in analyses]
 
     records = []
     for index, f in enumerate(functions):
         context.check_must_abort()
         if f is None:
-            raise KeyError('Graph analysis is not supported: ' +
-                           analyses[index])
+            raise KeyError("Graph analysis is not supported: " + analyses[index])
         name, value = f(g)
         if isinstance(value, (list, set, tuple)):
             value = list(value)[:_MAX_LIST_SIZE]
@@ -155,126 +153,120 @@ def _analyze_graph(context: mgp.ProcCtx,
 
 
 def _number_of_nodes(g: nx.MultiDiGraph) -> Tuple[str, int]:
-    '''Returns number of nodes.'''
-    return 'Number of nodes', nx.number_of_nodes(g)
+    """Returns number of nodes."""
+    return "Number of nodes", nx.number_of_nodes(g)
 
 
 def _number_of_edges(g: nx.MultiDiGraph) -> Tuple[str, int]:
-    '''Returns number of edges.'''
-    return 'Number of edges', nx.number_of_edges(g)
+    """Returns number of edges."""
+    return "Number of edges", nx.number_of_edges(g)
 
 
 def _avg_degree(g: nx.MultiDiGraph) -> Tuple[str, float]:
-    '''Returns average degree.'''
+    """Returns average degree."""
     _, number_of_nodes = _number_of_nodes(g)
     _, number_of_edges = _number_of_edges(g)
-    avg_degree = (0 if number_of_nodes == 0
-                  else number_of_edges / number_of_nodes)
-    return 'Average degree', avg_degree
+    avg_degree = 0 if number_of_nodes == 0 else number_of_edges / number_of_nodes
+    return "Average degree", avg_degree
 
 
 def _sorted_nodes_degree(g: nx.MultiDiGraph) -> Tuple[str, List[int]]:
-    '''Returns list of sorted nodes degree. [(node_id, degree), ...]'''
+    """Returns list of sorted nodes degree. [(node_id, degree), ...]"""
     nodes_degree = [(n, g.degree(n)) for n in g.nodes()]
     nodes_degree.sort(key=lambda x: x[1], reverse=True)
-    return 'Sorted nodes degree', nodes_degree
+    return "Sorted nodes degree", nodes_degree
 
 
 def _self_loops(g: nx.MultiDiGraph) -> Tuple[str, int]:
-    '''Returns number of self loops.'''
-    return 'Self loops', sum((1 if e[0] == e[1] else 0 for e in g.edges()))
+    """Returns number of self loops."""
+    return "Self loops", sum((1 if e[0] == e[1] else 0 for e in g.edges()))
 
 
 def _is_bipartite(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is bipartite.'''
+    """Checks if graph is bipartite."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.bipartite.basic.is_bipartite(g))
-    return 'Is bipartite', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.bipartite.basic.is_bipartite(g)
+    return "Is bipartite", ret
 
 
 def _is_planar(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is planar.'''
+    """Checks if graph is planar."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.planarity.check_planarity(g)[0])
-    return 'Is planar', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.planarity.check_planarity(g)[0]
+    return "Is planar", ret
 
 
 def _is_biconnected(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Check if graph is biconnected.'''
+    """Check if graph is biconnected."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.is_biconnected(nx.MultiDiGraph.to_undirected(g)))
-    return 'Is biconnected', ret
+    ret = False if number_of_nodes == 0 else nx.is_biconnected(nx.MultiDiGraph.to_undirected(g))
+    return "Is biconnected", ret
 
 
 def _is_weakly_connected(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Check if graph is weakly connected.'''
+    """Check if graph is weakly connected."""
     _, number_of_nodes = _number_of_nodes(g)
     ret = False if number_of_nodes == 0 else nx.is_weakly_connected(g)
-    return 'Is weakly connected', ret
+    return "Is weakly connected", ret
 
 
 def _is_strongly_connected(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is strongly connected.'''
+    """Checks if graph is strongly connected."""
     _, number_of_nodes = _number_of_nodes(g)
     ret = False if number_of_nodes == 0 else nx.is_strongly_connected(g)
-    return 'Is strongly connected', ret
+    return "Is strongly connected", ret
 
 
 def _is_dag(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Check if graph is directed acyclic graph (DAG)'''
+    """Check if graph is directed acyclic graph (DAG)"""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.dag.is_directed_acyclic_graph(g))
-    return 'Is DAG', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.dag.is_directed_acyclic_graph(g)
+    return "Is DAG", ret
 
 
 def _is_eulerian(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is Eulerian.'''
+    """Checks if graph is Eulerian."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.euler.is_eulerian(g))
-    return 'Is eulerian', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.euler.is_eulerian(g)
+    return "Is eulerian", ret
 
 
 def _is_forest(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is forest, all components must be trees.'''
+    """Checks if graph is forest, all components must be trees."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.tree.recognition.is_forest(g))
-    return 'Is forest', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.tree.recognition.is_forest(g)
+    return "Is forest", ret
 
 
 def _is_tree(g: nx.MultiDiGraph) -> Tuple[str, bool]:
-    '''Checks if graph is tree.'''
+    """Checks if graph is tree."""
     _, number_of_nodes = _number_of_nodes(g)
-    ret = (False if number_of_nodes == 0
-           else nx.algorithms.tree.recognition.is_tree(g))
-    return 'Is tree', ret
+    ret = False if number_of_nodes == 0 else nx.algorithms.tree.recognition.is_tree(g)
+    return "Is tree", ret
 
 
 def _bridges(g: nx.MultiDiGraph) -> Tuple[str, int]:
-    '''Returns number of bridges, multiple edges between same nodes are
-       mapped to one edge.'''
-    return 'Number of bridges', sum(1 for _ in nx.bridges(nx.Graph(g)))
+    """Returns number of bridges, multiple edges between same nodes are
+    mapped to one edge."""
+    return "Number of bridges", sum(1 for _ in nx.bridges(nx.Graph(g)))
 
 
 def _articulation_points(g: nx.MultiDiGraph):
-    '''Returns number of articulation points.'''
+    """Returns number of articulation points."""
     undirected = nx.MultiDiGraph.to_undirected(g)
-    return ('Number of articulation points',
-            sum(1 for _ in nx.articulation_points(undirected)))
+    return (
+        "Number of articulation points",
+        sum(1 for _ in nx.articulation_points(undirected)),
+    )
 
 
 def _weakly_components(g: nx.MultiDiGraph):
-    '''Returns number of weakly components.'''
+    """Returns number of weakly components."""
     comps = nx.algorithms.components.number_weakly_connected_components(g)
-    return 'Number of weakly connected components', comps
+    return "Number of weakly connected components", comps
 
 
 def _strongly_components(g: nx.MultiDiGraph):
-    '''Returns number of strongly connected components.'''
+    """Returns number of strongly connected components."""
     comps = nx.algorithms.components.number_strongly_connected_components(g)
-    return 'Number of strongly connected components', comps
+    return "Number of strongly connected components", comps

query_modules/mgp_networkx.py

@@ -1,20 +1,22 @@
 import sys
 import mgp
 import collections
+
 try:
     import networkx as nx
 except ImportError as import_error:
-    sys.stderr.write((
-        '\n'
-        'NOTE: Please install networkx to be able to use Memgraph NetworkX '
-        'wrappers. Using Python:\n'
-        + sys.version +
-        '\n'))
+    sys.stderr.write(
+        (
+            "\n"
+            "NOTE: Please install networkx to be able to use Memgraph NetworkX "
+            "wrappers. Using Python:\n" + sys.version + "\n"
+        )
+    )
     raise import_error
 
 
 class MemgraphAdjlistOuterDict(collections.abc.Mapping):
-    __slots__ = ('_ctx', '_succ', '_multi')
+    __slots__ = ("_ctx", "_succ", "_multi")
 
     def __init__(self, ctx, succ=True, multi=True):
         self._ctx = ctx
@@ -24,8 +26,7 @@ class MemgraphAdjlistOuterDict(collections.abc.Mapping):
     def __getitem__(self, key):
         if key not in self:
             raise KeyError
-        return MemgraphAdjlistInnerDict(key, succ=self._succ,
-                                        multi=self._multi)
+        return MemgraphAdjlistInnerDict(key, succ=self._succ, multi=self._multi)
 
     def __iter__(self):
         return iter(self._ctx.graph.vertices)
@@ -40,7 +41,7 @@ class MemgraphAdjlistOuterDict(collections.abc.Mapping):
 
 
 class MemgraphAdjlistInnerDict(collections.abc.Mapping):
-    __slots__ = ('_node', '_succ', '_multi', '_neighbors')
+    __slots__ = ("_node", "_succ", "_multi", "_neighbors")
 
     def __init__(self, node, succ=True, multi=True):
         self._node = node
@@ -71,31 +72,26 @@ class MemgraphAdjlistInnerDict(collections.abc.Mapping):
     def _get_neighbors(self):
         if not self._neighbors:
             if self._succ:
-                self._neighbors = set(
-                    e.to_vertex for e in self._node.out_edges)
+                self._neighbors = set(e.to_vertex for e in self._node.out_edges)
             else:
-                self._neighbors = set(
-                    e.from_vertex for e in self._node.in_edges)
+                self._neighbors = set(e.from_vertex for e in self._node.in_edges)
         return self._neighbors
 
     def _get_edge(self, neighbor):
         if self._succ:
-            edge = list(filter(lambda e: e.to_vertex == neighbor,
-                               self._node.out_edges))
+            edge = list(filter(lambda e: e.to_vertex == neighbor, self._node.out_edges))
         else:
-            edge = list(filter(lambda e: e.from_vertex == neighbor,
-                               self._node.in_edges))
+            edge = list(filter(lambda e: e.from_vertex == neighbor, self._node.in_edges))
 
         assert len(edge) >= 1
         if len(edge) > 1:
-            raise RuntimeError('Graph contains multiedges but '
-                               'is of non-multigraph type: {}'.format(edge))
+            raise RuntimeError("Graph contains multiedges but " "is of non-multigraph type: {}".format(edge))
 
         return edge[0]
 
 
 class MemgraphEdgeKeyDict(collections.abc.Mapping):
-    __slots__ = ('_node', '_neighbor', '_succ', '_edges')
+    __slots__ = ("_node", "_neighbor", "_succ", "_edges")
 
     def __init__(self, node, neighbor, succ=True):
         self._node = node
@@ -122,18 +118,14 @@ class MemgraphEdgeKeyDict(collections.abc.Mapping):
     def _get_edges(self):
         if not self._edges:
             if self._succ:
-                self._edges = list(filter(
-                    lambda e: e.to_vertex == self._neighbor,
-                    self._node.out_edges))
+                self._edges = list(filter(lambda e: e.to_vertex == self._neighbor, self._node.out_edges))
             else:
-                self._edges = list(filter(
-                    lambda e: e.from_vertex == self._neighbor,
-                    self._node.in_edges))
+                self._edges = list(filter(lambda e: e.from_vertex == self._neighbor, self._node.in_edges))
         return self._edges
 
 
 class UnhashableProperties(collections.abc.Mapping):
-    __slots__ = ('_properties')
+    __slots__ = "_properties"
 
     def __init__(self, properties):
         self._properties = properties
@@ -155,7 +147,7 @@ class UnhashableProperties(collections.abc.Mapping):
 
 
 class MemgraphNodeDict(collections.abc.Mapping):
-    __slots__ = ('_ctx',)
+    __slots__ = ("_ctx",)
 
     def __init__(self, ctx):
         self._ctx = ctx
@@ -187,8 +179,7 @@ class MemgraphNodeDict(collections.abc.Mapping):
 
 
 class MemgraphDiGraphBase:
-    def __init__(self, incoming_graph_data=None, ctx=None, multi=True,
-                 **kwargs):
+    def __init__(self, incoming_graph_data=None, ctx=None, multi=True, **kwargs):
         # NOTE: We assume that our graph will never be given any initial data
         # because we already pull our data from the Memgraph database. This
         # assert is triggered by certain NetworkX procedures because they
@@ -201,23 +192,30 @@ class MemgraphDiGraphBase:
         # modify the graph's internal attributes and don't try to populate it
         # with initial data or modify it.
 
-        self.node_dict_factory = lambda: MemgraphNodeDict(ctx) \
-            if ctx else self._error
+        self.node_dict_factory = lambda: MemgraphNodeDict(ctx) if ctx else self._error
         self.node_attr_dict_factory = self._error
 
-        self.adjlist_outer_dict_factory = \
-            lambda: MemgraphAdjlistOuterDict(ctx, multi=multi) \
-            if ctx else self._error
+        self.adjlist_outer_dict_factory = lambda: MemgraphAdjlistOuterDict(ctx, multi=multi) if ctx else self._error
         self.adjlist_inner_dict_factory = self._error
         self.edge_key_dict_factory = self._error
         self.edge_attr_dict_factory = self._error
 
         # NOTE: We forbid any mutating operations because our graph is
         # immutable and pulls its data from the Memgraph database.
-        for f in ['add_node', 'add_nodes_from', 'remove_node',
-                  'remove_nodes_from', 'add_edge', 'add_edges_from',
-                  'add_weighted_edges_from', 'new_edge_key', 'remove_edge',
-                  'remove_edges_from', 'update', 'clear']:
+        for f in [
+            "add_node",
+            "add_nodes_from",
+            "remove_node",
+            "remove_nodes_from",
+            "add_edge",
+            "add_edges_from",
+            "add_weighted_edges_from",
+            "new_edge_key",
+            "remove_edge",
+            "remove_edges_from",
+            "update",
+            "clear",
+        ]:
             setattr(self, f, lambda *args, **kwargs: self._error())
 
         super().__init__(None, **kwargs)
@@ -231,33 +229,29 @@ class MemgraphDiGraphBase:
         self._pred = MemgraphAdjlistOuterDict(ctx, succ=False, multi=multi)
 
     def _error(self):
-        raise RuntimeError('Modification operations are not supported')
+        raise RuntimeError("Modification operations are not supported")
 
 
 class MemgraphMultiDiGraph(MemgraphDiGraphBase, nx.MultiDiGraph):
     def __init__(self, incoming_graph_data=None, ctx=None, **kwargs):
-        super().__init__(incoming_graph_data=incoming_graph_data,
-                         ctx=ctx, multi=True, **kwargs)
+        super().__init__(incoming_graph_data=incoming_graph_data, ctx=ctx, multi=True, **kwargs)
 
 
 def MemgraphMultiGraph(incoming_graph_data=None, ctx=None, **kwargs):
-    return MemgraphMultiDiGraph(incoming_graph_data=incoming_graph_data,
-                                ctx=ctx, **kwargs).to_undirected(as_view=True)
+    return MemgraphMultiDiGraph(incoming_graph_data=incoming_graph_data, ctx=ctx, **kwargs).to_undirected(as_view=True)
 
 
 class MemgraphDiGraph(MemgraphDiGraphBase, nx.DiGraph):
     def __init__(self, incoming_graph_data=None, ctx=None, **kwargs):
-        super().__init__(incoming_graph_data=incoming_graph_data,
-                         ctx=ctx, multi=False, **kwargs)
+        super().__init__(incoming_graph_data=incoming_graph_data, ctx=ctx, multi=False, **kwargs)
 
 
 def MemgraphGraph(incoming_graph_data=None, ctx=None, **kwargs):
-    return MemgraphDiGraph(incoming_graph_data=incoming_graph_data,
-                           ctx=ctx, **kwargs).to_undirected(as_view=True)
+    return MemgraphDiGraph(incoming_graph_data=incoming_graph_data, ctx=ctx, **kwargs).to_undirected(as_view=True)
 
 
 class PropertiesDictionary(collections.abc.Mapping):
-    __slots__ = ('_ctx', '_prop', '_len')
+    __slots__ = ("_ctx", "_prop", "_len")
 
     def __init__(self, ctx, prop):
         self._ctx = ctx
@@ -270,8 +264,7 @@ class PropertiesDictionary(collections.abc.Mapping):
         try:
             return vertex.properties[self._prop]
         except KeyError:
-            raise KeyError(("{} doesn\t have the required " +
-                            "property '{}'").format(vertex, self._prop))
+            raise KeyError(("{} doesn\t have the required " + "property '{}'").format(vertex, self._prop))
 
     def __iter__(self):
         for v in self._ctx.graph.vertices:

query_modules/wcc.py

@@ -1,23 +1,20 @@
 import sys
 import mgp
+
 try:
     import networkx as nx
 except ImportError as import_error:
     sys.stderr.write(
-        '\n'
-        'NOTE: Please install networkx to be able to use wcc module.\n'
-        'Using Python:\n'
-        + sys.version +
-        '\n')
+        "\n" "NOTE: Please install networkx to be able to use wcc module.\n" "Using Python:\n" + sys.version + "\n"
+    )
     raise import_error
 
 
 @mgp.read_proc
-def get_components(vertices: mgp.List[mgp.Vertex],
-                   edges: mgp.List[mgp.Edge]
-                   ) -> mgp.Record(n_components=int,
-                                   components=mgp.List[mgp.List[mgp.Vertex]]):
-    '''
+def get_components(
+    vertices: mgp.List[mgp.Vertex], edges: mgp.List[mgp.Edge]
+) -> mgp.Record(n_components=int, components=mgp.List[mgp.List[mgp.Vertex]]):
+    """
     This procedure finds weakly connected components of a given subgraph of a
     directed graph.
 
@@ -41,7 +38,7 @@ def get_components(vertices: mgp.List[mgp.Vertex],
     WITH collect(n) AS nodes, collect(e) AS edges
     CALL wcc.get_components(nodes, edges) YIELD *
     RETURN n_components, components;
-    '''
+    """
     g = nx.DiGraph()
     g.add_nodes_from(vertices)
     g.add_edges_from([(edge.from_vertex, edge.to_vertex) for edge in edges])

release/get_version.py

@@ -104,7 +104,9 @@ def retry(retry_limit, timeout=100):
                 except Exception:
                     time.sleep(timeout)
             return func(*args, **kwargs)
+
         return wrapper
+
     return inner_func
 
 
@@ -163,8 +165,15 @@ def format_version(variant, version, offering, distance=None, shorthash=None, su
 
 # Parse arguments.
 parser = argparse.ArgumentParser(description="Get the current version of Memgraph.")
-parser.add_argument("--open-source", action="store_true", help="set the current offering to 'open-source'")
-parser.add_argument("version", help="manual version override, if supplied the version isn't " "determined using git")
+parser.add_argument(
+    "--open-source",
+    action="store_true",
+    help="set the current offering to 'open-source'",
+)
+parser.add_argument(
+    "version",
+    help="manual version override, if supplied the version isn't " "determined using git",
+)
 parser.add_argument("suffix", help="custom suffix for the current version being built")
 parser.add_argument(
     "--variant",
@@ -173,7 +182,9 @@ parser.add_argument(
     help="which variant of the version string should be generated",
 )
 parser.add_argument(
-    "--memgraph-root-dir", help="The root directory of the checked out " "Memgraph repository.", default="."
+    "--memgraph-root-dir",
+    help="The root directory of the checked out " "Memgraph repository.",
+    default=".",
 )
 args = parser.parse_args()
 
@@ -256,14 +267,27 @@ for version in versions:
 if current_version is None:
     raise Exception("You are attempting to determine the version for a very " "old version of Memgraph!")
 version, branch, master_branch_merge = current_version
-distance = int(get_output("git", "rev-list", "--count", "--first-parent", master_branch_merge + ".." + current_hash))
+distance = int(
+    get_output(
+        "git",
+        "rev-list",
+        "--count",
+        "--first-parent",
+        master_branch_merge + ".." + current_hash,
+    )
+)
 version_str = ".".join(map(str, version)) + ".0"
 if distance == 0:
     print(format_version(args.variant, version_str, offering, suffix=args.suffix), end="")
 else:
     print(
         format_version(
-            args.variant, version_str, offering, distance=distance, shorthash=current_hash_short, suffix=args.suffix
+            args.variant,
+            version_str,
+            offering,
+            distance=distance,
+            shorthash=current_hash_short,
+            suffix=args.suffix,
         ),
         end="",
     )

src/auth/models.cpp

@@ -84,6 +84,8 @@ std::string PermissionToString(Permission permission) {
       return "MODULE_WRITE";
     case Permission::WEBSOCKET:
       return "WEBSOCKET";
+    case Permission::LABELS:
+      return "LABELS";
   }
 }
 
@@ -183,19 +185,107 @@ bool operator==(const Permissions &first, const Permissions &second) {
 
 bool operator!=(const Permissions &first, const Permissions &second) { return !(first == second); }
 
+LabelPermissions::LabelPermissions(const std::unordered_set<std::string> &grants,
+                                   const std::unordered_set<std::string> &denies)
+    : grants_(grants), denies_(denies) {}
+
+PermissionLevel LabelPermissions::Has(const std::string &permission) const {
+  if (denies_.find(permission) != denies_.end()) {
+    return PermissionLevel::DENY;
+  }
+
+  if (grants_.find(permission) != denies_.end()) {
+    return PermissionLevel::GRANT;
+  }
+
+  return PermissionLevel::NEUTRAL;
+}
+
+void LabelPermissions::Grant(const std::string &permission) {
+  auto deniedPermissionIter = denies_.find(permission);
+
+  if (deniedPermissionIter != denies_.end()) {
+    denies_.erase(deniedPermissionIter);
+  }
+
+  if (grants_.find(permission) == grants_.end()) {
+    grants_.insert(permission);
+  }
+}
+
+void LabelPermissions::Revoke(const std::string &permission) {
+  auto deniedPermissionIter = denies_.find(permission);
+  auto grantedPermissionIter = grants_.find(permission);
+
+  if (deniedPermissionIter != denies_.end()) {
+    denies_.erase(deniedPermissionIter);
+  }
+
+  if (grantedPermissionIter != grants_.end()) {
+    grants_.erase(grantedPermissionIter);
+  }
+}
+
+void LabelPermissions::Deny(const std::string &permission) {
+  auto grantedPermissionIter = grants_.find(permission);
+
+  if (grantedPermissionIter != grants_.end()) {
+    grants_.erase(grantedPermissionIter);
+  }
+
+  if (denies_.find(permission) == denies_.end()) {
+    denies_.insert(permission);
+  }
+}
+
+std::unordered_set<std::string> LabelPermissions::GetGrants() const { return grants_; }
+
+std::unordered_set<std::string> LabelPermissions::GetDenies() const { return denies_; }
+
+nlohmann::json LabelPermissions::Serialize() const {
+  nlohmann::json data = nlohmann::json::object();
+  data["grants"] = grants_;
+  data["denies"] = denies_;
+  return data;
+}
+
+LabelPermissions LabelPermissions::Deserialize(const nlohmann::json &data) {
+  if (!data.is_object()) {
+    throw AuthException("Couldn't load permissions data!");
+  }
+
+  return {LabelPermissions(data["grants"], data["denies"])};
+}
+
+std::unordered_set<std::string> LabelPermissions::grants() const { return grants_; }
+std::unordered_set<std::string> LabelPermissions::denies() const { return denies_; }
+
+bool operator==(const LabelPermissions &first, const LabelPermissions &second) {
+  return first.grants() == second.grants() && first.denies() == second.denies();
+}
+
+bool operator!=(const LabelPermissions &first, const LabelPermissions &second) { return !(first == second); }
+
 Role::Role(const std::string &rolename) : rolename_(utils::ToLowerCase(rolename)) {}
 
 Role::Role(const std::string &rolename, const Permissions &permissions)
     : rolename_(utils::ToLowerCase(rolename)), permissions_(permissions) {}
 
+Role::Role(const std::string &rolename, const Permissions &permissions, const LabelPermissions &labelPermissions)
+    : rolename_(utils::ToLowerCase(rolename)), permissions_(permissions), labelPermissions_(labelPermissions) {}
+
 const std::string &Role::rolename() const { return rolename_; }
 const Permissions &Role::permissions() const { return permissions_; }
 Permissions &Role::permissions() { return permissions_; }
 
+LabelPermissions &Role::labelPermissions() { return labelPermissions_; }
+
 nlohmann::json Role::Serialize() const {
   nlohmann::json data = nlohmann::json::object();
   data["rolename"] = rolename_;
   data["permissions"] = permissions_.Serialize();
+  data["labelPermissions"] = labelPermissions_.Serialize();
+
   return data;
 }
 
@@ -207,7 +297,9 @@ Role Role::Deserialize(const nlohmann::json &data) {
     throw AuthException("Couldn't load role data!");
   }
   auto permissions = Permissions::Deserialize(data["permissions"]);
-  return {data["rolename"], permissions};
+  auto labelPermissions = LabelPermissions::Deserialize(data["labelPermissions"]);
+
+  return {data["rolename"], permissions, labelPermissions};
 }
 
 bool operator==(const Role &first, const Role &second) {
@@ -219,6 +311,13 @@ User::User(const std::string &username) : username_(utils::ToLowerCase(username)
 User::User(const std::string &username, const std::string &password_hash, const Permissions &permissions)
     : username_(utils::ToLowerCase(username)), password_hash_(password_hash), permissions_(permissions) {}
 
+User::User(const std::string &username, const std::string &password_hash, const Permissions &permissions,
+           const LabelPermissions &labelPermissions)
+    : username_(utils::ToLowerCase(username)),
+      password_hash_(password_hash),
+      permissions_(permissions),
+      labelPermissions_(labelPermissions) {}
+
 bool User::CheckPassword(const std::string &password) {
   if (password_hash_.empty()) return true;
   return VerifyPassword(password, password_hash_);
@@ -271,6 +370,8 @@ const std::string &User::username() const { return username_; }
 const Permissions &User::permissions() const { return permissions_; }
 Permissions &User::permissions() { return permissions_; }
 
+LabelPermissions &User::labelPermissions() { return labelPermissions_; }
+
 const Role *User::role() const {
   if (role_.has_value()) {
     return &role_.value();
@@ -283,6 +384,7 @@ nlohmann::json User::Serialize() const {
   data["username"] = username_;
   data["password_hash"] = password_hash_;
   data["permissions"] = permissions_.Serialize();
+  data["labelPermissions"] = labelPermissions_.Serialize();
   // The role shouldn't be serialized here, it is stored as a foreign key.
   return data;
 }
@@ -295,11 +397,14 @@ User User::Deserialize(const nlohmann::json &data) {
     throw AuthException("Couldn't load user data!");
   }
   auto permissions = Permissions::Deserialize(data["permissions"]);
-  return {data["username"], data["password_hash"], permissions};
+  auto labelPermissions = LabelPermissions::Deserialize(data["labelPermissions"]);
+
+  return {data["username"], data["password_hash"], permissions, labelPermissions};
 }
 
 bool operator==(const User &first, const User &second) {
   return first.username_ == second.username_ && first.password_hash_ == second.password_hash_ &&
          first.permissions_ == second.permissions_ && first.role_ == second.role_;
 }
+
 }  // namespace memgraph::auth

src/auth/models.hpp

@@ -12,6 +12,7 @@
 #include <string>
 
 #include <json/json.hpp>
+#include <unordered_set>
 
 namespace memgraph::auth {
 // These permissions must have values that are applicable for usage in a
@@ -38,7 +39,8 @@ enum class Permission : uint64_t {
   STREAM       = 1U << 17U,
   MODULE_READ  = 1U << 18U,
   MODULE_WRITE = 1U << 19U,
-  WEBSOCKET    = 1U << 20U
+  WEBSOCKET    = 1U << 20U,
+  LABELS       = 1U << 21U
 };
 // clang-format on
 
@@ -88,16 +90,52 @@ bool operator==(const Permissions &first, const Permissions &second);
 
 bool operator!=(const Permissions &first, const Permissions &second);
 
+class LabelPermissions final {
+ public:
+  LabelPermissions(const std::unordered_set<std::string> &grants = {},
+                   const std::unordered_set<std::string> &denies = {});
+
+  PermissionLevel Has(const std::string &permission) const;
+
+  void Grant(const std::string &permission);
+
+  void Revoke(const std::string &permission);
+
+  void Deny(const std::string &permission);
+
+  std::unordered_set<std::string> GetGrants() const;
+  std::unordered_set<std::string> GetDenies() const;
+
+  nlohmann::json Serialize() const;
+
+  /// @throw AuthException if unable to deserialize.
+  static LabelPermissions Deserialize(const nlohmann::json &data);
+
+  std::unordered_set<std::string> grants() const;
+  std::unordered_set<std::string> denies() const;
+
+ private:
+  std::unordered_set<std::string> grants_{};
+  std::unordered_set<std::string> denies_{};
+};
+
+bool operator==(const LabelPermissions &first, const LabelPermissions &second);
+
+bool operator!=(const LabelPermissions &first, const LabelPermissions &second);
 class Role final {
  public:
   Role(const std::string &rolename);
 
   Role(const std::string &rolename, const Permissions &permissions);
 
+  Role(const std::string &rolename, const Permissions &permissions, const LabelPermissions &labelPermissions);
+
   const std::string &rolename() const;
   const Permissions &permissions() const;
   Permissions &permissions();
 
+  LabelPermissions &labelPermissions();
+
   nlohmann::json Serialize() const;
 
   /// @throw AuthException if unable to deserialize.
@@ -108,6 +146,7 @@ class Role final {
  private:
   std::string rolename_;
   Permissions permissions_;
+  LabelPermissions labelPermissions_;
 };
 
 bool operator==(const Role &first, const Role &second);
@@ -119,6 +158,9 @@ class User final {
 
   User(const std::string &username, const std::string &password_hash, const Permissions &permissions);
 
+  User(const std::string &username, const std::string &password_hash, const Permissions &permissions,
+       const LabelPermissions &labelPermissions);
+
   /// @throw AuthException if unable to verify the password.
   bool CheckPassword(const std::string &password);
 
@@ -138,6 +180,8 @@ class User final {
 
   const Role *role() const;
 
+  LabelPermissions &labelPermissions();
+
   nlohmann::json Serialize() const;
 
   /// @throw AuthException if unable to deserialize.
@@ -150,7 +194,9 @@ class User final {
   std::string password_hash_;
   Permissions permissions_;
   std::optional<Role> role_;
+  LabelPermissions labelPermissions_;
 };
 
 bool operator==(const User &first, const User &second);
+
 }  // namespace memgraph::auth

src/auth/reference_modules/ldap.py

@@ -18,19 +18,24 @@ roles_config = config["roles"]
 # Initialize LDAP server.
 tls = None
 if server_config["encryption"] != "disabled":
-    cert_file = server_config["cert_file"] if server_config["cert_file"] \
-        else None
+    cert_file = server_config["cert_file"] if server_config["cert_file"] else None
     key_file = server_config["key_file"] if server_config["key_file"] else None
     ca_file = server_config["ca_file"] if server_config["ca_file"] else None
-    validate = ssl.CERT_REQUIRED if server_config["validate_cert"] \
-        else ssl.CERT_NONE
-    tls = ldap3.Tls(local_private_key_file=key_file,
-                    local_certificate_file=cert_file,
-                    ca_certs_file=ca_file,
-                    validate=validate)
+    validate = ssl.CERT_REQUIRED if server_config["validate_cert"] else ssl.CERT_NONE
+    tls = ldap3.Tls(
+        local_private_key_file=key_file,
+        local_certificate_file=cert_file,
+        ca_certs_file=ca_file,
+        validate=validate,
+    )
 use_ssl = server_config["encryption"] == "ssl"
-server = ldap3.Server(server_config["host"], port=server_config["port"],
-                      tls=tls, use_ssl=use_ssl, get_info=ldap3.ALL)
+server = ldap3.Server(
+    server_config["host"],
+    port=server_config["port"],
+    tls=tls,
+    use_ssl=use_ssl,
+    get_info=ldap3.ALL,
+)
 
 
 # Main authentication/authorization function.
@@ -40,14 +45,12 @@ def authenticate(username, password):
         return {"authenticated": False, "role": ""}
 
     # Create the DN of the user
-    dn = users_config["prefix"] + ldap3.utils.dn.escape_rdn(username) + \
-        users_config["suffix"]
+    dn = users_config["prefix"] + ldap3.utils.dn.escape_rdn(username) + users_config["suffix"]
 
     # Bind to the server
     conn = ldap3.Connection(server, dn, password)
     if server_config["encryption"] == "starttls" and not conn.start_tls():
-        print("ERROR: Couldn't issue STARTTLS to the LDAP server!",
-              file=sys.stderr)
+        print("ERROR: Couldn't issue STARTTLS to the LDAP server!", file=sys.stderr)
         return {"authenticated": False, "role": ""}
     if not conn.bind():
         return {"authenticated": False, "role": ""}
@@ -56,25 +59,32 @@ def authenticate(username, password):
     if roles_config["root_dn"] != "":
         # search for role
         search_filter = "(&(objectclass={objclass})({attr}={value}))".format(
-                objclass=roles_config["root_objectclass"],
-                attr=roles_config["user_attribute"],
-                value=ldap3.utils.conv.escape_filter_chars(dn))
-        succ = conn.search(roles_config["root_dn"], search_filter,
-                           search_scope=ldap3.LEVEL,
-                           attributes=[roles_config["role_attribute"]])
+            objclass=roles_config["root_objectclass"],
+            attr=roles_config["user_attribute"],
+            value=ldap3.utils.conv.escape_filter_chars(dn),
+        )
+        succ = conn.search(
+            roles_config["root_dn"],
+            search_filter,
+            search_scope=ldap3.LEVEL,
+            attributes=[roles_config["role_attribute"]],
+        )
         if not succ or len(conn.entries) == 0:
             return {"authenticated": True, "role": ""}
         if len(conn.entries) > 1:
-            roles = list(map(lambda x: x[roles_config["role_attribute"]].value,
-                             conn.entries))
+            roles = list(map(lambda x: x[roles_config["role_attribute"]].value, conn.entries))
             # Because we don't know exactly which role the user should have
             # we authorize the user with an empty role.
-            print("WARNING: Found more than one role for "
-                  "user '" + username + "':", ", ".join(roles) + "!",
-                  file=sys.stderr)
+            print(
+                "WARNING: Found more than one role for " "user '" + username + "':",
+                ", ".join(roles) + "!",
+                file=sys.stderr,
+            )
             return {"authenticated": True, "role": ""}
-        return {"authenticated": True,
-                "role": conn.entries[0][roles_config["role_attribute"]].value}
+        return {
+            "authenticated": True,
+            "role": conn.entries[0][roles_config["role_attribute"]].value,
+        }
     else:
         return {"authenticated": True, "role": ""}
 

src/glue/auth.cpp

@@ -57,6 +57,8 @@ auth::Permission PrivilegeToPermission(query::AuthQuery::Privilege privilege) {
       return auth::Permission::MODULE_WRITE;
     case query::AuthQuery::Privilege::WEBSOCKET:
       return auth::Permission::WEBSOCKET;
+    case query::AuthQuery::Privilege::LABELS:
+      return auth::Permission::LABELS;
   }
 }
 }  // namespace memgraph::glue

src/memgraph.cpp

@@ -501,7 +501,7 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
 
       if (first_user) {
         spdlog::info("{} is first created user. Granting all privileges.", username);
-        GrantPrivilege(username, memgraph::query::kPrivilegesAll);
+        GrantPrivilege(username, memgraph::query::kPrivilegesAll, {"*"});
       }
 
       return user_added;
@@ -747,8 +747,9 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
   }
 
   void GrantPrivilege(const std::string &user_or_role,
-                      const std::vector<memgraph::query::AuthQuery::Privilege> &privileges) override {
-    EditPermissions(user_or_role, privileges, [](auto *permissions, const auto &permission) {
+                      const std::vector<memgraph::query::AuthQuery::Privilege> &privileges,
+                      const std::vector<std::string> &labels) override {
+    EditPermissions(user_or_role, privileges, labels, [](auto *permissions, const auto &permission) {
       // TODO (mferencevic): should we first check that the
       // privilege is granted/denied/revoked before
       // unconditionally granting/denying/revoking it?
@@ -757,8 +758,9 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
   }
 
   void DenyPrivilege(const std::string &user_or_role,
-                     const std::vector<memgraph::query::AuthQuery::Privilege> &privileges) override {
-    EditPermissions(user_or_role, privileges, [](auto *permissions, const auto &permission) {
+                     const std::vector<memgraph::query::AuthQuery::Privilege> &privileges,
+                     const std::vector<std::string> &labels) override {
+    EditPermissions(user_or_role, privileges, labels, [](auto *permissions, const auto &permission) {
       // TODO (mferencevic): should we first check that the
       // privilege is granted/denied/revoked before
       // unconditionally granting/denying/revoking it?
@@ -767,8 +769,9 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
   }
 
   void RevokePrivilege(const std::string &user_or_role,
-                       const std::vector<memgraph::query::AuthQuery::Privilege> &privileges) override {
-    EditPermissions(user_or_role, privileges, [](auto *permissions, const auto &permission) {
+                       const std::vector<memgraph::query::AuthQuery::Privilege> &privileges,
+                       const std::vector<std::string> &labels) override {
+    EditPermissions(user_or_role, privileges, labels, [](auto *permissions, const auto &permission) {
       // TODO (mferencevic): should we first check that the
       // privilege is granted/denied/revoked before
       // unconditionally granting/denying/revoking it?
@@ -779,7 +782,8 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
  private:
   template <class TEditFun>
   void EditPermissions(const std::string &user_or_role,
-                       const std::vector<memgraph::query::AuthQuery::Privilege> &privileges, const TEditFun &edit_fun) {
+                       const std::vector<memgraph::query::AuthQuery::Privilege> &privileges,
+                       const std::vector<std::string> &labels, const TEditFun &edit_fun) {
     if (!std::regex_match(user_or_role, name_regex_)) {
       throw memgraph::query::QueryRuntimeException("Invalid user or role name.");
     }
@@ -799,11 +803,17 @@ class AuthQueryHandler final : public memgraph::query::AuthQueryHandler {
         for (const auto &permission : permissions) {
           edit_fun(&user->permissions(), permission);
         }
+        for (const auto &label : labels) {
+          edit_fun(&user->labelPermissions(), label);
+        }
         locked_auth->SaveUser(*user);
       } else {
         for (const auto &permission : permissions) {
           edit_fun(&role->permissions(), permission);
         }
+        for (const auto &label : labels) {
+          edit_fun(&role->labelPermissions(), label);
+        }
         locked_auth->SaveRole(*role);
       }
     } catch (const memgraph::auth::AuthException &e) {

src/query/frontend/ast/ast.lcp

@@ -2239,9 +2239,11 @@ cpp<#
    (user "std::string" :scope :public)
    (role "std::string" :scope :public)
    (user-or-role "std::string" :scope :public)
+
    (password "Expression *" :initval "nullptr" :scope :public
              :slk-save #'slk-save-ast-pointer
              :slk-load (slk-load-ast-pointer "Expression"))
+   (labels "std::vector<std::string>" :scope :public)
    (privileges "std::vector<Privilege>" :scope :public))
   (:public
     (lcp:define-enum action
@@ -2253,7 +2255,7 @@ cpp<#
     (lcp:define-enum privilege
         (create delete match merge set remove index stats auth constraint
          dump replication durability read_file free_memory trigger config stream module_read module_write
-         websocket)
+         websocket labels)
       (:serialize))
     #>cpp
     AuthQuery() = default;
@@ -2264,13 +2266,14 @@ cpp<#
     #>cpp
     AuthQuery(Action action, std::string user, std::string role,
               std::string user_or_role, Expression *password,
-              std::vector<Privilege> privileges)
+              std::vector<std::string> labels ,std::vector<Privilege> privileges)
         : action_(action),
           user_(user),
           role_(role),
           user_or_role_(user_or_role),
           password_(password),
-          privileges_(privileges) {}
+          labels_(labels),
+          privileges_(privileges){}
     cpp<#)
   (:private
     #>cpp
@@ -2295,7 +2298,8 @@ const std::vector<AuthQuery::Privilege> kPrivilegesAll = {
     AuthQuery::Privilege::FREE_MEMORY, AuthQuery::Privilege::TRIGGER,
     AuthQuery::Privilege::CONFIG,      AuthQuery::Privilege::STREAM,
     AuthQuery::Privilege::MODULE_READ, AuthQuery::Privilege::MODULE_WRITE,
-    AuthQuery::Privilege::WEBSOCKET};
+    AuthQuery::Privilege::WEBSOCKET,
+    AuthQuery::Privilege::LABELS};
 cpp<#
 
 (lcp:define-class info-query (query)

src/query/frontend/ast/cypher_main_visitor.cpp

@@ -1285,7 +1285,11 @@ antlrcpp::Any CypherMainVisitor::visitGrantPrivilege(MemgraphCypher::GrantPrivil
   auth->user_or_role_ = ctx->userOrRole->accept(this).as<std::string>();
   if (ctx->privilegeList()) {
     for (auto *privilege : ctx->privilegeList()->privilege()) {
-      auth->privileges_.push_back(privilege->accept(this));
+      if (privilege->LABELS()) {
+        auth->labels_ = privilege->labelList()->accept(this).as<std::vector<std::string>>();
+      } else {
+        auth->privileges_.push_back(privilege->accept(this));
+      }
     }
   } else {
     /* grant all privileges */
@@ -1303,7 +1307,11 @@ antlrcpp::Any CypherMainVisitor::visitDenyPrivilege(MemgraphCypher::DenyPrivileg
   auth->user_or_role_ = ctx->userOrRole->accept(this).as<std::string>();
   if (ctx->privilegeList()) {
     for (auto *privilege : ctx->privilegeList()->privilege()) {
-      auth->privileges_.push_back(privilege->accept(this));
+      if (privilege->LABELS()) {
+        auth->labels_ = privilege->labelList()->accept(this).as<std::vector<std::string>>();
+      } else {
+        auth->privileges_.push_back(privilege->accept(this));
+      }
     }
   } else {
     /* deny all privileges */
@@ -1321,7 +1329,11 @@ antlrcpp::Any CypherMainVisitor::visitRevokePrivilege(MemgraphCypher::RevokePriv
   auth->user_or_role_ = ctx->userOrRole->accept(this).as<std::string>();
   if (ctx->privilegeList()) {
     for (auto *privilege : ctx->privilegeList()->privilege()) {
-      auth->privileges_.push_back(privilege->accept(this));
+      if (privilege->LABELS()) {
+        auth->labels_ = privilege->labelList()->accept(this).as<std::vector<std::string>>();
+      } else {
+        auth->privileges_.push_back(privilege->accept(this));
+      }
     }
   } else {
     /* revoke all privileges */
@@ -1330,6 +1342,22 @@ antlrcpp::Any CypherMainVisitor::visitRevokePrivilege(MemgraphCypher::RevokePriv
   return auth;
 }
 
+/**
+ * @return AuthQuery*
+ */
+antlrcpp::Any CypherMainVisitor::visitLabelList(MemgraphCypher::LabelListContext *ctx) {
+  std::vector<std::string> labels;
+  for (auto *label : ctx->label()) {
+    if (label->ASTERISK()) {
+      labels.push_back("*");
+    } else {
+      labels.push_back(label->symbolicName()->accept(this).as<std::string>());
+    }
+  }
+
+  return labels;
+}
+
 /**
  * @return AuthQuery::Privilege
  */
@@ -1355,6 +1383,10 @@ antlrcpp::Any CypherMainVisitor::visitPrivilege(MemgraphCypher::PrivilegeContext
   if (ctx->MODULE_READ()) return AuthQuery::Privilege::MODULE_READ;
   if (ctx->MODULE_WRITE()) return AuthQuery::Privilege::MODULE_WRITE;
   if (ctx->WEBSOCKET()) return AuthQuery::Privilege::WEBSOCKET;
+  if (ctx->LABELS()) {
+    // fill labels in authquery
+    return AuthQuery::Privilege::LABELS;
+  }
   LOG_FATAL("Should not get here - unknown privilege!");
 }
 

src/query/frontend/ast/cypher_main_visitor.hpp

@@ -473,6 +473,11 @@ class CypherMainVisitor : public antlropencypher::MemgraphCypherBaseVisitor {
    */
   antlrcpp::Any visitPrivilege(MemgraphCypher::PrivilegeContext *ctx) override;
 
+  /**
+   * @return AuthQuery::LabelList
+   */
+  antlrcpp::Any visitLabelList(MemgraphCypher::LabelListContext *ctx) override;
+
   /**
    * @return AuthQuery*
    */

src/query/frontend/opencypher/grammar/MemgraphCypher.g4

@@ -56,6 +56,7 @@ memgraphCypherKeyword : cypherKeyword
                       | IDENTIFIED
                       | ISOLATION
                       | KAFKA
+                      | LABELS
                       | LEVEL
                       | LOAD
                       | LOCK
@@ -254,10 +255,15 @@ privilege : CREATE
           | MODULE_READ
           | MODULE_WRITE
           | WEBSOCKET
+          | LABELS labels=labelList
           ;
 
 privilegeList : privilege ( ',' privilege )* ;
 
+labelList : COLON label ( ',' COLON label )* ;
+
+label : ( '*' | symbolicName ) ;
+
 showPrivileges : SHOW PRIVILEGES FOR userOrRole=userOrRoleName ;
 
 showRoleForUser : SHOW ROLE FOR user=userOrRoleName ;

src/query/frontend/opencypher/grammar/MemgraphCypherLexer.g4

@@ -66,6 +66,7 @@ IDENTIFIED          : I D E N T I F I E D ;
 IGNORE              : I G N O R E ;
 ISOLATION           : I S O L A T I O N ;
 KAFKA               : K A F K A ;
+LABELS              : L A B E L S ;
 LEVEL               : L E V E L ;
 LOAD                : L O A D ;
 LOCK                : L O C K ;

src/query/frontend/stripped_lexer_constants.hpp

@@ -204,8 +204,9 @@ const trie::Trie kKeywords = {"union",
                               "pulsar",
                               "service_url",
                               "version",
-                              "websocket"
-                              "foreach"};
+                              "websocket",
+                              "foreach",
+                              "labels"};
 
 // Unicode codepoints that are allowed at the start of the unescaped name.
 const std::bitset<kBitsetSize> kUnescapedNameAllowedStarts(

src/query/interpreter.cpp

@@ -282,6 +282,8 @@ Callback HandleAuthQuery(AuthQuery *auth_query, AuthQueryHandler *auth, const Pa
   std::string rolename = auth_query->role_;
   std::string user_or_role = auth_query->user_or_role_;
   std::vector<AuthQuery::Privilege> privileges = auth_query->privileges_;
+  std::vector<std::string> labels = auth_query->labels_;
+  // std::vector<storage::LabelId> labels = NamesToLabels(labels, db_accessor);
   auto password = EvaluateOptionalExpression(auth_query->password_, &evaluator);
 
   Callback callback;
@@ -296,7 +298,8 @@ Callback HandleAuthQuery(AuthQuery *auth_query, AuthQueryHandler *auth, const Pa
 
   if (license_check_result.HasError() && enterprise_only_methods.contains(auth_query->action_)) {
     throw utils::BasicException(
-        utils::license::LicenseCheckErrorToString(license_check_result.GetError(), "advanced authentication features"));
+        utils::license::LicenseCheckErrorToString(license_check_result.GetError(), "advanced authentication
+        features"));
   }
 
   switch (auth_query->action_) {
@@ -311,7 +314,7 @@ Callback HandleAuthQuery(AuthQuery *auth_query, AuthQueryHandler *auth, const Pa
         // If the license is not valid we create users with admin access
         if (!valid_enterprise_license) {
           spdlog::warn("Granting all the privileges to {}.", username);
-          auth->GrantPrivilege(username, kPrivilegesAll);
+          auth->GrantPrivilege(username, kPrivilegesAll, {});
         }
 
         return std::vector<std::vector<TypedValue>>();
@@ -386,20 +389,20 @@ Callback HandleAuthQuery(AuthQuery *auth_query, AuthQueryHandler *auth, const Pa
       };
       return callback;
     case AuthQuery::Action::GRANT_PRIVILEGE:
-      callback.fn = [auth, user_or_role, privileges] {
-        auth->GrantPrivilege(user_or_role, privileges);
+      callback.fn = [auth, user_or_role, privileges, labels] {
+        auth->GrantPrivilege(user_or_role, privileges, labels);
         return std::vector<std::vector<TypedValue>>();
       };
       return callback;
     case AuthQuery::Action::DENY_PRIVILEGE:
-      callback.fn = [auth, user_or_role, privileges] {
-        auth->DenyPrivilege(user_or_role, privileges);
+      callback.fn = [auth, user_or_role, privileges, labels] {
+        auth->DenyPrivilege(user_or_role, privileges, labels);
         return std::vector<std::vector<TypedValue>>();
       };
       return callback;
     case AuthQuery::Action::REVOKE_PRIVILEGE: {
-      callback.fn = [auth, user_or_role, privileges] {
-        auth->RevokePrivilege(user_or_role, privileges);
+      callback.fn = [auth, user_or_role, privileges, labels] {
+        auth->RevokePrivilege(user_or_role, privileges, labels);
         return std::vector<std::vector<TypedValue>>();
       };
       return callback;

src/query/interpreter.hpp

@@ -99,14 +99,16 @@ class AuthQueryHandler {
   virtual std::vector<std::vector<TypedValue>> GetPrivileges(const std::string &user_or_role) = 0;
 
   /// @throw QueryRuntimeException if an error ocurred.
-  virtual void GrantPrivilege(const std::string &user_or_role, const std::vector<AuthQuery::Privilege> &privileges) = 0;
+  virtual void GrantPrivilege(const std::string &user_or_role, const std::vector<AuthQuery::Privilege> &privileges,
+                              const std::vector<std::string> &labels) = 0;
 
   /// @throw QueryRuntimeException if an error ocurred.
-  virtual void DenyPrivilege(const std::string &user_or_role, const std::vector<AuthQuery::Privilege> &privileges) = 0;
+  virtual void DenyPrivilege(const std::string &user_or_role, const std::vector<AuthQuery::Privilege> &privileges,
+                             const std::vector<std::string> &labels) = 0;
 
   /// @throw QueryRuntimeException if an error ocurred.
-  virtual void RevokePrivilege(const std::string &user_or_role,
-                               const std::vector<AuthQuery::Privilege> &privileges) = 0;
+  virtual void RevokePrivilege(const std::string &user_or_role, const std::vector<AuthQuery::Privilege> &privileges,
+                               const std::vector<std::string> &labels) = 0;
 };
 
 enum class QueryHandlerResult { COMMIT, ABORT, NOTHING };

tests/drivers/python/v4_1/docs_how_to_query.py

@@ -15,33 +15,31 @@
 import sys
 from neo4j import GraphDatabase, basic_auth
 
-driver = GraphDatabase.driver('bolt://localhost:7687',
-                              auth=basic_auth('', ''),
-                              encrypted=False)
+driver = GraphDatabase.driver("bolt://localhost:7687", auth=basic_auth("", ""), encrypted=False)
 session = driver.session()
 
-session.run('MATCH (n) DETACH DELETE n').consume()
-print('Database cleared.')
+session.run("MATCH (n) DETACH DELETE n").consume()
+print("Database cleared.")
 
 session.run('CREATE (alice:Person {name: "Alice", age: 22})').consume()
-print('Record created.')
+print("Record created.")
 
-node = session.run('MATCH (n) RETURN n').single()['n']
-print('Record matched.')
+node = session.run("MATCH (n) RETURN n").single()["n"]
+print("Record matched.")
 
 label = list(node.labels)[0]
-name = node['name']
-age = node['age']
+name = node["name"]
+age = node["age"]
 
-if label != 'Person' or name != 'Alice' or age != 22:
-    print('Data does not match')
+if label != "Person" or name != "Alice" or age != 22:
+    print("Data does not match")
     sys.exit(1)
 
-print('Label: %s' % label)
-print('name: %s' % name)
-print('age: %s' % age)
+print("Label: %s" % label)
+print("name: %s" % name)
+print("age: %s" % age)
 
 session.close()
 driver.close()
 
-print('All ok!')
+print("All ok!")

tests/drivers/python/v4_1/max_query_length.py

@@ -14,9 +14,7 @@
 
 from neo4j import GraphDatabase, basic_auth
 
-driver = GraphDatabase.driver("bolt://localhost:7687",
-                              auth=basic_auth("", ""),
-                              encrypted=False)
+driver = GraphDatabase.driver("bolt://localhost:7687", auth=basic_auth("", ""), encrypted=False)
 
 query_template = 'CREATE (n {name:"%s"})'
 template_size = len(query_template) - 2  # because of %s
@@ -26,10 +24,11 @@ max_len = 1000000
 # binary search because we have to find the maximum size (in number of chars)
 # of a query that can be executed via driver
 while True:
-    assert min_len > 0 and max_len > 0, \
-        "The lengths have to be positive values! If this happens something" \
-        " is terrible wrong with min & max lengths OR the database" \
+    assert min_len > 0 and max_len > 0, (
+        "The lengths have to be positive values! If this happens something"
+        " is terrible wrong with min & max lengths OR the database"
         " isn't available."
+    )
     property_size = (max_len + min_len) // 2
     try:
         driver.session().run(query_template % ("a" * property_size)).consume()
@@ -42,8 +41,7 @@ while True:
 
 assert property_size == max_len, "max_len probably has to be increased!"
 
-print("\nThe max length of a query from Python driver is: %s\n" %
-      (template_size + property_size))
+print("\nThe max length of a query from Python driver is: %s\n" % (template_size + property_size))
 
 # sessions are not closed bacause all sessions that are
 # executed with wrong query size might be broken

tests/drivers/python/v4_1/transactions.py

@@ -15,6 +15,7 @@
 from neo4j import GraphDatabase, basic_auth
 from neo4j.exceptions import ClientError, TransientError
 
+
 def tx_error(tx, name, name2):
     a = tx.run("CREATE (a:Person {name: $name}) RETURN a", name=name).value()
     print(a[0])
@@ -22,17 +23,19 @@ def tx_error(tx, name, name2):
     a = tx.run("CREATE (a:Person {name: $name}) RETURN a", name=name2).value()
     print(a[0])
 
+
 def tx_good(tx, name, name2):
     a = tx.run("CREATE (a:Person {name: $name}) RETURN a", name=name).value()
     print(a[0])
     a = tx.run("CREATE (a:Person {name: $name}) RETURN a", name=name2).value()
     print(a[0])
 
+
 def tx_too_long(tx):
     tx.run("MATCH (a), (b), (c), (d), (e), (f) RETURN COUNT(*) AS cnt")
 
-with GraphDatabase.driver("bolt://localhost:7687", auth=basic_auth("", ""),
-                          encrypted=False) as driver:
+
+with GraphDatabase.driver("bolt://localhost:7687", auth=basic_auth("", ""), encrypted=False) as driver:
 
     def add_person(f, name, name2):
         with driver.session() as session:

tests/e2e/magic_functions/function_example.py

@@ -106,6 +106,7 @@ def test_try_to_write(connection, function_type):
             f"MATCH (n) RETURN {function_type}_write.try_to_write(n, 'property', 1);",
         )
 
+
 @pytest.mark.parametrize("function_type", ["py", "c"])
 def test_case_sensitivity(connection, function_type):
     cursor = connection.cursor()

tests/e2e/replication/show_while_creating_invalid_state.py

@@ -141,10 +141,16 @@ def test_add_replica_invalid_timeout(connection):
     cursor = connection(7687, "main").cursor()
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, "REGISTER REPLICA replica_1 SYNC WITH TIMEOUT 0 TO '127.0.0.1:10001';")
+        execute_and_fetch_all(
+            cursor,
+            "REGISTER REPLICA replica_1 SYNC WITH TIMEOUT 0 TO '127.0.0.1:10001';",
+        )
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, "REGISTER REPLICA replica_1 SYNC WITH TIMEOUT -5 TO '127.0.0.1:10001';")
+        execute_and_fetch_all(
+            cursor,
+            "REGISTER REPLICA replica_1 SYNC WITH TIMEOUT -5 TO '127.0.0.1:10001';",
+        )
 
     actual_data = execute_and_fetch_all(cursor, "SHOW REPLICAS;")
     assert 0 == len(actual_data)

tests/e2e/streams/common.py

@@ -115,7 +115,10 @@ def start_stream(cursor, stream_name):
 
 def start_stream_with_limit(cursor, stream_name, batch_limit, timeout=None):
     if timeout is not None:
-        execute_and_fetch_all(cursor, f"START STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout} ")
+        execute_and_fetch_all(
+            cursor,
+            f"START STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout} ",
+        )
     else:
         execute_and_fetch_all(cursor, f"START STREAM {stream_name} BATCH_LIMIT {batch_limit}")
 
@@ -156,7 +159,12 @@ def pulsar_default_namespace_topic(topic):
 
 
 def test_start_and_stop_during_check(
-    operation, connection, stream_creator, message_sender, already_stopped_error, batchSize
+    operation,
+    connection,
+    stream_creator,
+    message_sender,
+    already_stopped_error,
+    batchSize,
 ):
     # This test is quite complex. The goal is to call START/STOP queries
     # while a CHECK query is waiting for its result. Because the Global
@@ -317,24 +325,42 @@ def test_check_stream_same_number_of_queries_than_messages(connection, stream_cr
 
     expected_queries_and_raw_messages_1 = (
         [  # queries
-            {PARAMETERS_LITERAL: {"value": "Parameter: 01"}, QUERY_LITERAL: "Message: 01"},
-            {PARAMETERS_LITERAL: {"value": "Parameter: 02"}, QUERY_LITERAL: "Message: 02"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 01"},
+                QUERY_LITERAL: "Message: 01",
+            },
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 02"},
+                QUERY_LITERAL: "Message: 02",
+            },
         ],
         ["01", "02"],  # raw message
     )
 
     expected_queries_and_raw_messages_2 = (
         [  # queries
-            {PARAMETERS_LITERAL: {"value": "Parameter: 03"}, QUERY_LITERAL: "Message: 03"},
-            {PARAMETERS_LITERAL: {"value": "Parameter: 04"}, QUERY_LITERAL: "Message: 04"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 03"},
+                QUERY_LITERAL: "Message: 03",
+            },
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 04"},
+                QUERY_LITERAL: "Message: 04",
+            },
         ],
         ["03", "04"],  # raw message
     )
 
     expected_queries_and_raw_messages_3 = (
         [  # queries
-            {PARAMETERS_LITERAL: {"value": "Parameter: 05"}, QUERY_LITERAL: "Message: 05"},
-            {PARAMETERS_LITERAL: {"value": "Parameter: 06"}, QUERY_LITERAL: "Message: 06"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 05"},
+                QUERY_LITERAL: "Message: 05",
+            },
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 06"},
+                QUERY_LITERAL: "Message: 06",
+            },
         ],
         ["05", "06"],  # raw message
     )
@@ -389,20 +415,32 @@ def test_check_stream_different_number_of_queries_than_messages(connection, stre
 
     expected_queries_and_raw_messages_2 = (
         [  # queries
-            {PARAMETERS_LITERAL: {"value": "Parameter: 03"}, QUERY_LITERAL: "Message: 03"},
-            {PARAMETERS_LITERAL: {"value": "Parameter: 04"}, QUERY_LITERAL: "Message: 04"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 03"},
+                QUERY_LITERAL: "Message: 03",
+            },
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 04"},
+                QUERY_LITERAL: "Message: 04",
+            },
         ],
         ["03", "04"],  # raw message
     )
 
     expected_queries_and_raw_messages_3 = (
         [  # queries
-            {PARAMETERS_LITERAL: {"value": "Parameter: b_05"}, QUERY_LITERAL: "Message: b_05"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: b_05"},
+                QUERY_LITERAL: "Message: b_05",
+            },
             {
                 PARAMETERS_LITERAL: {"value": "Parameter: extra_b_05"},
                 QUERY_LITERAL: "Message: extra_b_05",
             },
-            {PARAMETERS_LITERAL: {"value": "Parameter: 06"}, QUERY_LITERAL: "Message: 06"},
+            {
+                PARAMETERS_LITERAL: {"value": "Parameter: 06"},
+                QUERY_LITERAL: "Message: 06",
+            },
         ],
         ["b_05", "06"],  # raw message
     )
@@ -467,7 +505,10 @@ def test_start_stream_with_batch_limit_reaching_timeout(connection, stream_creat
     start_time = time.time()
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, f"START STREAM {STREAM_NAME} BATCH_LIMIT {BATCH_LIMIT} TIMEOUT {TIMEOUT}")
+        execute_and_fetch_all(
+            cursor,
+            f"START STREAM {STREAM_NAME} BATCH_LIMIT {BATCH_LIMIT} TIMEOUT {TIMEOUT}",
+        )
 
     end_time = time.time()
     assert (
@@ -483,7 +524,10 @@ def test_start_stream_with_batch_limit_while_check_running(
     def start_check_stream(stream_name, batch_limit, timeout):
         connection = connect()
         cursor = connection.cursor()
-        execute_and_fetch_all(cursor, f"CHECK STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout}")
+        execute_and_fetch_all(
+            cursor,
+            f"CHECK STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout}",
+        )
 
     def start_new_stream_with_limit(stream_name, batch_limit, timeout):
         connection = connect()
@@ -518,7 +562,9 @@ def test_start_stream_with_batch_limit_while_check_running(
 
     # 2/
     thread_stream_running = Process(
-        target=start_new_stream_with_limit, daemon=True, args=(STREAM_NAME, BATCH_LIMIT + 1, TIMEOUT)
+        target=start_new_stream_with_limit,
+        daemon=True,
+        args=(STREAM_NAME, BATCH_LIMIT + 1, TIMEOUT),
     )  # Sending BATCH_LIMIT + 1 messages as BATCH_LIMIT messages have already been sent during the CHECK STREAM (and not consumed)
     thread_stream_running.start()
     time.sleep(2)
@@ -541,7 +587,10 @@ def test_check_while_stream_with_batch_limit_running(connection, stream_creator,
     def start_check_stream(stream_name, batch_limit, timeout):
         connection = connect()
         cursor = connection.cursor()
-        execute_and_fetch_all(cursor, f"CHECK STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout}")
+        execute_and_fetch_all(
+            cursor,
+            f"CHECK STREAM {stream_name} BATCH_LIMIT {batch_limit} TIMEOUT {timeout}",
+        )
 
     STREAM_NAME = "test_batch_limit_and_check"
     BATCH_LIMIT = 1
@@ -553,7 +602,9 @@ def test_check_while_stream_with_batch_limit_running(connection, stream_creator,
 
     # 1/
     thread_stream_running = Process(
-        target=start_new_stream_with_limit, daemon=True, args=(STREAM_NAME, BATCH_LIMIT, TIMEOUT)
+        target=start_new_stream_with_limit,
+        daemon=True,
+        args=(STREAM_NAME, BATCH_LIMIT, TIMEOUT),
     )
     start_time = time.time()
     thread_stream_running.start()
@@ -561,7 +612,10 @@ def test_check_while_stream_with_batch_limit_running(connection, stream_creator,
     assert get_is_running(cursor, STREAM_NAME)
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {BATCH_LIMIT} TIMEOUT {TIMEOUT}")
+        execute_and_fetch_all(
+            cursor,
+            f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {BATCH_LIMIT} TIMEOUT {TIMEOUT}",
+        )
 
     end_time = time.time()
     assert (end_time - start_time) < 0.8 * TIMEOUT, "The CHECK STREAM has probably thrown due to timeout!"
@@ -632,7 +686,10 @@ def test_check_stream_with_batch_limit_with_invalid_batch_limit(connection, stre
     start_time = time.time()
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {batch_limit} TIMEOUT {TIMEOUT}")
+        execute_and_fetch_all(
+            cursor,
+            f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {batch_limit} TIMEOUT {TIMEOUT}",
+        )
 
     end_time = time.time()
     assert (end_time - start_time) < 0.8 * TIMEOUT_IN_SECONDS, "The CHECK STREAM has probably thrown due to timeout!"
@@ -642,7 +699,10 @@ def test_check_stream_with_batch_limit_with_invalid_batch_limit(connection, stre
     start_time = time.time()
 
     with pytest.raises(mgclient.DatabaseError):
-        execute_and_fetch_all(cursor, f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {batch_limit} TIMEOUT {TIMEOUT}")
+        execute_and_fetch_all(
+            cursor,
+            f"CHECK STREAM {STREAM_NAME} BATCH_LIMIT {batch_limit} TIMEOUT {TIMEOUT}",
+        )
 
     end_time = time.time()
     assert (end_time - start_time) < 0.8 * TIMEOUT_IN_SECONDS, "The CHECK STREAM has probably thrown due to timeout!"

tests/e2e/streams/conftest.py

@@ -37,29 +37,22 @@ def connection():
 
 
 def get_topics(num):
-    return [f'topic_{i}' for i in range(num)]
+    return [f"topic_{i}" for i in range(num)]
 
 
 @pytest.fixture(scope="function")
 def kafka_topics():
-    admin_client = KafkaAdminClient(
-        bootstrap_servers="localhost:9092",
-        client_id="test")
+    admin_client = KafkaAdminClient(bootstrap_servers="localhost:9092", client_id="test")
     # The issue arises if we remove default kafka topics, e.g.
     # "__consumer_offsets"
-    previous_topics = [
-        topic for topic in admin_client.list_topics() if topic != "__consumer_offsets"]
+    previous_topics = [topic for topic in admin_client.list_topics() if topic != "__consumer_offsets"]
     if previous_topics:
         admin_client.delete_topics(topics=previous_topics, timeout_ms=5000)
 
     topics = get_topics(3)
     topics_to_create = []
     for topic in topics:
-        topics_to_create.append(
-            NewTopic(
-                name=topic,
-                num_partitions=1,
-                replication_factor=1))
+        topics_to_create.append(NewTopic(name=topic, num_partitions=1, replication_factor=1))
 
     admin_client.create_topics(new_topics=topics_to_create, timeout_ms=5000)
     yield topics
@@ -80,6 +73,5 @@ def pulsar_client():
 def pulsar_topics():
     topics = get_topics(3)
     for topic in topics:
-        requests.delete(
-            f'http://127.0.0.1:6652/admin/v2/persistent/public/default/{topic}?force=true')
+        requests.delete(f"http://127.0.0.1:6652/admin/v2/persistent/public/default/{topic}?force=true")
     yield topics

tests/e2e/streams/kafka_streams_tests.py

@@ -20,7 +20,10 @@ import common
 
 TRANSFORMATIONS_TO_CHECK_C = ["c_transformations.empty_transformation"]
 
-TRANSFORMATIONS_TO_CHECK_PY = ["kafka_transform.simple", "kafka_transform.with_parameters"]
+TRANSFORMATIONS_TO_CHECK_PY = [
+    "kafka_transform.simple",
+    "kafka_transform.with_parameters",
+]
 
 
 @pytest.mark.parametrize("transformation", TRANSFORMATIONS_TO_CHECK_PY)
@@ -463,7 +466,11 @@ def test_start_stream_with_batch_limit_while_check_running(kafka_producer, kafka
         kafka_producer.send(kafka_topics[0], message).get(timeout=6000)
 
     def setup_function(start_check_stream, cursor, stream_name, batch_limit, timeout):
-        thread_stream_check = Process(target=start_check_stream, daemon=True, args=(stream_name, batch_limit, timeout))
+        thread_stream_check = Process(
+            target=start_check_stream,
+            daemon=True,
+            args=(stream_name, batch_limit, timeout),
+        )
         thread_stream_check.start()
         time.sleep(2)
         assert common.get_is_running(cursor, stream_name)

tests/e2e/streams/pulsar_streams_tests.py

@@ -18,13 +18,20 @@ import time
 from multiprocessing import Process, Value
 import common
 
-TRANSFORMATIONS_TO_CHECK = ["pulsar_transform.simple", "pulsar_transform.with_parameters"]
+TRANSFORMATIONS_TO_CHECK = [
+    "pulsar_transform.simple",
+    "pulsar_transform.with_parameters",
+]
 
 
 def check_vertex_exists_with_topic_and_payload(cursor, topic, payload_byte):
     decoded_payload = payload_byte.decode("utf-8")
     common.check_vertex_exists_with_properties(
-        cursor, {"topic": f'"{common.pulsar_default_namespace_topic(topic)}"', "payload": f'"{decoded_payload}"'}
+        cursor,
+        {
+            "topic": f'"{common.pulsar_default_namespace_topic(topic)}"',
+            "payload": f'"{decoded_payload}"',
+        },
     )
 
 
@@ -100,7 +107,8 @@ def test_start_from_latest_messages(pulsar_client, pulsar_topics, connection):
         assert len(vertices_with_msg) == 0
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
     producer.send(common.SIMPLE_MSG)
 
@@ -157,7 +165,8 @@ def test_check_stream(pulsar_client, pulsar_topics, connection, transformation):
     time.sleep(1)
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
     producer.send(common.SIMPLE_MSG)
     check_vertex_exists_with_topic_and_payload(cursor, pulsar_topics[0], common.SIMPLE_MSG)
@@ -263,7 +272,8 @@ def test_start_and_stop_during_check(pulsar_client, pulsar_topics, connection, o
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM pulsar_transform.simple BATCH_SIZE {BATCH_SIZE}"
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def message_sender(msg):
@@ -311,7 +321,8 @@ def test_restart_after_error(pulsar_client, pulsar_topics, connection):
     time.sleep(1)
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
     producer.send(common.SIMPLE_MSG)
     assert common.timed_wait(lambda: not common.get_is_running(cursor, "test_stream"))
@@ -351,7 +362,8 @@ def test_start_stream_with_batch_limit(pulsar_client, pulsar_topics, connection)
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM pulsar_transform.simple BATCH_SIZE 1"
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def messages_sender(nof_messages):
@@ -386,7 +398,8 @@ def test_start_stream_with_batch_limit_while_check_running(pulsar_client, pulsar
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM pulsar_transform.simple BATCH_SIZE 1"
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def message_sender(message):
@@ -402,7 +415,8 @@ def test_check_while_stream_with_batch_limit_running(pulsar_client, pulsar_topic
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM pulsar_transform.simple BATCH_SIZE 1"
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def message_sender(message):
@@ -420,7 +434,8 @@ def test_check_stream_same_number_of_queries_than_messages(pulsar_client, pulsar
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM {TRANSFORMATION} BATCH_INTERVAL 3000 BATCH_SIZE  {batch_size} "
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def message_sender(msg):
@@ -438,7 +453,8 @@ def test_check_stream_different_number_of_queries_than_messages(pulsar_client, p
         return f"CREATE PULSAR STREAM {stream_name} TOPICS {pulsar_topics[0]} TRANSFORM {TRANSFORMATION} BATCH_INTERVAL 3000 BATCH_SIZE  {batch_size} "
 
     producer = pulsar_client.create_producer(
-        common.pulsar_default_namespace_topic(pulsar_topics[0]), send_timeout_millis=60000
+        common.pulsar_default_namespace_topic(pulsar_topics[0]),
+        send_timeout_millis=60000,
     )
 
     def message_sender(msg):

tests/e2e/streams/streams_owner_tests.py

@@ -15,6 +15,7 @@ import time
 import mgclient
 import common
 
+
 def get_cursor_with_user(username):
     connection = common.connect(username=username, password="")
     return connection.cursor()
@@ -22,23 +23,21 @@ def get_cursor_with_user(username):
 
 def create_admin_user(cursor, admin_user):
     common.execute_and_fetch_all(cursor, f"CREATE USER {admin_user}")
-    common.execute_and_fetch_all(
-        cursor, f"GRANT ALL PRIVILEGES TO {admin_user}")
+    common.execute_and_fetch_all(cursor, f"GRANT ALL PRIVILEGES TO {admin_user}")
 
 
 def create_stream_user(cursor, stream_user):
     common.execute_and_fetch_all(cursor, f"CREATE USER {stream_user}")
-    common.execute_and_fetch_all(
-        cursor, f"GRANT STREAM TO {stream_user}")
+    common.execute_and_fetch_all(cursor, f"GRANT STREAM TO {stream_user}")
 
 
 def test_ownerless_stream(kafka_producer, kafka_topics, connection):
     assert len(kafka_topics) > 0
     userless_cursor = connection.cursor()
-    common.execute_and_fetch_all(userless_cursor,
-                                 "CREATE KAFKA STREAM ownerless "
-                                 f"TOPICS {kafka_topics[0]} "
-                                 f"TRANSFORM kafka_transform.simple")
+    common.execute_and_fetch_all(
+        userless_cursor,
+        "CREATE KAFKA STREAM ownerless " f"TOPICS {kafka_topics[0]} " f"TRANSFORM kafka_transform.simple",
+    )
     common.start_stream(userless_cursor, "ownerless")
     time.sleep(1)
 
@@ -46,11 +45,9 @@ def test_ownerless_stream(kafka_producer, kafka_topics, connection):
     create_admin_user(userless_cursor, admin_user)
 
     kafka_producer.send(kafka_topics[0], b"first message").get(timeout=60)
-    assert common.timed_wait(
-        lambda: not common.get_is_running(userless_cursor, "ownerless"))
+    assert common.timed_wait(lambda: not common.get_is_running(userless_cursor, "ownerless"))
 
-    assert len(common.execute_and_fetch_all(
-        userless_cursor, "MATCH (n) RETURN n")) == 0
+    assert len(common.execute_and_fetch_all(userless_cursor, "MATCH (n) RETURN n")) == 0
 
     common.execute_and_fetch_all(userless_cursor, f"DROP USER {admin_user}")
     common.start_stream(userless_cursor, "ownerless")
@@ -58,11 +55,9 @@ def test_ownerless_stream(kafka_producer, kafka_topics, connection):
 
     second_message = b"second message"
     kafka_producer.send(kafka_topics[0], second_message).get(timeout=60)
-    common.kafka_check_vertex_exists_with_topic_and_payload(
-        userless_cursor, kafka_topics[0], second_message)
+    common.kafka_check_vertex_exists_with_topic_and_payload(userless_cursor, kafka_topics[0], second_message)
 
-    assert len(common.execute_and_fetch_all(
-        userless_cursor, "MATCH (n) RETURN n")) == 1
+    assert len(common.execute_and_fetch_all(userless_cursor, "MATCH (n) RETURN n")) == 1
 
 
 def test_owner_is_shown(kafka_topics, connection):
@@ -73,12 +68,16 @@ def test_owner_is_shown(kafka_topics, connection):
     create_stream_user(userless_cursor, stream_user)
     stream_cursor = get_cursor_with_user(stream_user)
 
-    common.execute_and_fetch_all(stream_cursor, "CREATE KAFKA STREAM test "
-                                 f"TOPICS {kafka_topics[0]} "
-                                 f"TRANSFORM kafka_transform.simple")
+    common.execute_and_fetch_all(
+        stream_cursor,
+        "CREATE KAFKA STREAM test " f"TOPICS {kafka_topics[0]} " f"TRANSFORM kafka_transform.simple",
+    )
 
-    common.check_stream_info(userless_cursor, "test", ("test", "kafka", 100, 1000,
-        "kafka_transform.simple", stream_user, False))
+    common.check_stream_info(
+        userless_cursor,
+        "test",
+        ("test", "kafka", 100, 1000, "kafka_transform.simple", stream_user, False),
+    )
 
 
 def test_insufficient_privileges(kafka_producer, kafka_topics, connection):
@@ -93,10 +92,10 @@ def test_insufficient_privileges(kafka_producer, kafka_topics, connection):
     create_stream_user(userless_cursor, stream_user)
     stream_cursor = get_cursor_with_user(stream_user)
 
-    common.execute_and_fetch_all(stream_cursor,
-                                 "CREATE KAFKA STREAM insufficient_test "
-                                 f"TOPICS {kafka_topics[0]} "
-                                 f"TRANSFORM kafka_transform.simple")
+    common.execute_and_fetch_all(
+        stream_cursor,
+        "CREATE KAFKA STREAM insufficient_test " f"TOPICS {kafka_topics[0]} " f"TRANSFORM kafka_transform.simple",
+    )
 
     # the stream is started by admin, but should check against the owner
     # privileges
@@ -104,24 +103,19 @@ def test_insufficient_privileges(kafka_producer, kafka_topics, connection):
     time.sleep(1)
 
     kafka_producer.send(kafka_topics[0], b"first message").get(timeout=60)
-    assert common.timed_wait(
-        lambda: not common.get_is_running(userless_cursor, "insufficient_test"))
+    assert common.timed_wait(lambda: not common.get_is_running(userless_cursor, "insufficient_test"))
 
-    assert len(common.execute_and_fetch_all(
-        userless_cursor, "MATCH (n) RETURN n")) == 0
+    assert len(common.execute_and_fetch_all(userless_cursor, "MATCH (n) RETURN n")) == 0
 
-    common.execute_and_fetch_all(
-        admin_cursor, f"GRANT CREATE TO {stream_user}")
+    common.execute_and_fetch_all(admin_cursor, f"GRANT CREATE TO {stream_user}")
     common.start_stream(userless_cursor, "insufficient_test")
     time.sleep(1)
 
     second_message = b"second message"
     kafka_producer.send(kafka_topics[0], second_message).get(timeout=60)
-    common.kafka_check_vertex_exists_with_topic_and_payload(
-        userless_cursor, kafka_topics[0], second_message)
+    common.kafka_check_vertex_exists_with_topic_and_payload(userless_cursor, kafka_topics[0], second_message)
 
-    assert len(common.execute_and_fetch_all(
-        userless_cursor, "MATCH (n) RETURN n")) == 1
+    assert len(common.execute_and_fetch_all(userless_cursor, "MATCH (n) RETURN n")) == 1
 
 
 def test_happy_case(kafka_producer, kafka_topics, connection):
@@ -135,13 +129,12 @@ def test_happy_case(kafka_producer, kafka_topics, connection):
     stream_user = "stream_user"
     create_stream_user(userless_cursor, stream_user)
     stream_cursor = get_cursor_with_user(stream_user)
-    common.execute_and_fetch_all(
-        admin_cursor, f"GRANT CREATE TO {stream_user}")
+    common.execute_and_fetch_all(admin_cursor, f"GRANT CREATE TO {stream_user}")
 
-    common.execute_and_fetch_all(stream_cursor,
-                                 "CREATE KAFKA STREAM insufficient_test "
-                                 f"TOPICS {kafka_topics[0]} "
-                                 f"TRANSFORM kafka_transform.simple")
+    common.execute_and_fetch_all(
+        stream_cursor,
+        "CREATE KAFKA STREAM insufficient_test " f"TOPICS {kafka_topics[0]} " f"TRANSFORM kafka_transform.simple",
+    )
 
     common.start_stream(stream_cursor, "insufficient_test")
     time.sleep(1)
@@ -149,11 +142,9 @@ def test_happy_case(kafka_producer, kafka_topics, connection):
     first_message = b"first message"
     kafka_producer.send(kafka_topics[0], first_message).get(timeout=60)
 
-    common.kafka_check_vertex_exists_with_topic_and_payload(
-        userless_cursor, kafka_topics[0], first_message)
+    common.kafka_check_vertex_exists_with_topic_and_payload(userless_cursor, kafka_topics[0], first_message)
 
-    assert len(common.execute_and_fetch_all(
-        userless_cursor, "MATCH (n) RETURN n")) == 1
+    assert len(common.execute_and_fetch_all(userless_cursor, "MATCH (n) RETURN n")) == 1
 
 
 if __name__ == "__main__":

tests/e2e/streams/transformations/common_transform.py

@@ -23,7 +23,10 @@ def check_stream_no_filtering(
         message = messages.message_at(i)
         payload_as_str = message.payload().decode("utf-8")
         result_queries.append(
-            mgp.Record(query=f"Message: {payload_as_str}", parameters={"value": f"Parameter: {payload_as_str}"})
+            mgp.Record(
+                query=f"Message: {payload_as_str}",
+                parameters={"value": f"Parameter: {payload_as_str}"},
+            )
         )
 
     return result_queries
@@ -44,13 +47,17 @@ def check_stream_with_filtering(
             continue
 
         result_queries.append(
-            mgp.Record(query=f"Message: {payload_as_str}", parameters={"value": f"Parameter: {payload_as_str}"})
+            mgp.Record(
+                query=f"Message: {payload_as_str}",
+                parameters={"value": f"Parameter: {payload_as_str}"},
+            )
         )
 
         if "b" in payload_as_str:
             result_queries.append(
                 mgp.Record(
-                    query=f"Message: extra_{payload_as_str}", parameters={"value": f"Parameter: extra_{payload_as_str}"}
+                    query=f"Message: extra_{payload_as_str}",
+                    parameters={"value": f"Parameter: extra_{payload_as_str}"},
                 )
             )
 

tests/e2e/streams/transformations/pulsar_transform.py

@@ -59,7 +59,9 @@ def with_parameters(context: mgp.TransCtx, messages: mgp.Messages) -> mgp.Record
 
 
 @mgp.transformation
-def query(messages: mgp.Messages) -> mgp.Record(query=str, parameters=mgp.Nullable[mgp.Map]):
+def query(
+    messages: mgp.Messages,
+) -> mgp.Record(query=str, parameters=mgp.Nullable[mgp.Map]):
     result_queries = []
 
     for i in range(0, messages.total_messages()):

tests/e2e/triggers/procedures/write.py

@@ -11,6 +11,7 @@
 
 import mgp
 
+
 @mgp.write_proc
 def create_vertex(ctx: mgp.ProcCtx, id: mgp.Any) -> mgp.Record(v=mgp.Any):
     v = None
@@ -36,15 +37,14 @@ def detach_delete_vertex(ctx: mgp.ProcCtx, v: mgp.Any) -> mgp.Record():
 
 
 @mgp.write_proc
-def create_edge(ctx: mgp.ProcCtx, from_vertex: mgp.Vertex,
-                to_vertex: mgp.Vertex,
-                edge_type: str) -> mgp.Record(e=mgp.Any):
+def create_edge(
+    ctx: mgp.ProcCtx, from_vertex: mgp.Vertex, to_vertex: mgp.Vertex, edge_type: str
+) -> mgp.Record(e=mgp.Any):
     e = None
     try:
-        e = ctx.graph.create_edge(
-            from_vertex, to_vertex, mgp.EdgeType(edge_type))
-        e.properties.set("id", 1);
-        e.properties.set("tbd", 0);
+        e = ctx.graph.create_edge(from_vertex, to_vertex, mgp.EdgeType(edge_type))
+        e.properties.set("id", 1)
+        e.properties.set("tbd", 0)
     except RuntimeError as ex:
         return mgp.Record(e=str(ex))
     return mgp.Record(e=e)
@@ -61,19 +61,20 @@ def set_property(ctx: mgp.ProcCtx, object: mgp.Any) -> mgp.Record():
     object.properties.set("id", 2)
     return mgp.Record()
 
+
 @mgp.write_proc
 def remove_property(ctx: mgp.ProcCtx, object: mgp.Any) -> mgp.Record():
     object.properties.set("tbd", None)
     return mgp.Record()
 
+
 @mgp.write_proc
-def add_label(ctx: mgp.ProcCtx, object: mgp.Any,
-              name: str) -> mgp.Record(o=mgp.Any):
+def add_label(ctx: mgp.ProcCtx, object: mgp.Any, name: str) -> mgp.Record(o=mgp.Any):
     object.add_label(name)
     return mgp.Record(o=object)
 
+
 @mgp.write_proc
-def remove_label(ctx: mgp.ProcCtx, object: mgp.Any,
-                 name: str) -> mgp.Record(o=mgp.Any):
+def remove_label(ctx: mgp.ProcCtx, object: mgp.Any, name: str) -> mgp.Record(o=mgp.Any):
     object.remove_label(name)
     return mgp.Record(o=object)

tests/e2e/write_procedures/common.py

@@ -13,8 +13,7 @@ import mgclient
 import typing
 
 
-def execute_and_fetch_all(cursor: mgclient.Cursor, query: str,
-                          params: dict = {}) -> typing.List[tuple]:
+def execute_and_fetch_all(cursor: mgclient.Cursor, query: str, params: dict = {}) -> typing.List[tuple]:
     cursor.execute(query, params)
     return cursor.fetchall()
 

tests/e2e/write_procedures/procedures/read.py

@@ -13,8 +13,7 @@ import mgp
 
 
 @mgp.read_proc
-def underlying_graph_is_mutable(ctx: mgp.ProcCtx,
-                                object: mgp.Any) -> mgp.Record(mutable=bool):
+def underlying_graph_is_mutable(ctx: mgp.ProcCtx, object: mgp.Any) -> mgp.Record(mutable=bool):
     return mgp.Record(mutable=object.underlying_graph_is_mutable())
 
 

tests/e2e/write_procedures/procedures/write.py

@@ -35,13 +35,12 @@ def detach_delete_vertex(ctx: mgp.ProcCtx, v: mgp.Any) -> mgp.Record():
 
 
 @mgp.write_proc
-def create_edge(ctx: mgp.ProcCtx, from_vertex: mgp.Vertex,
-                to_vertex: mgp.Vertex,
-                edge_type: str) -> mgp.Record(e=mgp.Any):
+def create_edge(
+    ctx: mgp.ProcCtx, from_vertex: mgp.Vertex, to_vertex: mgp.Vertex, edge_type: str
+) -> mgp.Record(e=mgp.Any):
     e = None
     try:
-        e = ctx.graph.create_edge(
-            from_vertex, to_vertex, mgp.EdgeType(edge_type))
+        e = ctx.graph.create_edge(from_vertex, to_vertex, mgp.EdgeType(edge_type))
     except RuntimeError as ex:
         return mgp.Record(e=str(ex))
     return mgp.Record(e=e)
@@ -54,29 +53,25 @@ def delete_edge(ctx: mgp.ProcCtx, edge: mgp.Edge) -> mgp.Record():
 
 
 @mgp.write_proc
-def set_property(ctx: mgp.ProcCtx, object: mgp.Any,
-                 name: str, value: mgp.Nullable[mgp.Any]) -> mgp.Record():
+def set_property(ctx: mgp.ProcCtx, object: mgp.Any, name: str, value: mgp.Nullable[mgp.Any]) -> mgp.Record():
     object.properties.set(name, value)
     return mgp.Record()
 
 
 @mgp.write_proc
-def add_label(ctx: mgp.ProcCtx, object: mgp.Any,
-              name: str) -> mgp.Record(o=mgp.Any):
+def add_label(ctx: mgp.ProcCtx, object: mgp.Any, name: str) -> mgp.Record(o=mgp.Any):
     object.add_label(name)
     return mgp.Record(o=object)
 
 
 @mgp.write_proc
-def remove_label(ctx: mgp.ProcCtx, object: mgp.Any,
-                 name: str) -> mgp.Record(o=mgp.Any):
+def remove_label(ctx: mgp.ProcCtx, object: mgp.Any, name: str) -> mgp.Record(o=mgp.Any):
     object.remove_label(name)
     return mgp.Record(o=object)
 
 
 @mgp.write_proc
-def underlying_graph_is_mutable(ctx: mgp.ProcCtx,
-                                object: mgp.Any) -> mgp.Record(mutable=bool):
+def underlying_graph_is_mutable(ctx: mgp.ProcCtx, object: mgp.Any) -> mgp.Record(mutable=bool):
     return mgp.Record(mutable=object.underlying_graph_is_mutable())
 
 

tests/e2e/write_procedures/simple_write.py

@@ -13,8 +13,7 @@ import typing
 import mgclient
 import sys
 import pytest
-from common import (execute_and_fetch_all,
-                    has_one_result_row, has_n_result_row)
+from common import execute_and_fetch_all, has_one_result_row, has_n_result_row
 
 
 def test_is_write(connection):
@@ -22,15 +21,19 @@ def test_is_write(connection):
     result_order = "name, signature, is_write"
     cursor = connection.cursor()
     for proc in execute_and_fetch_all(
-            cursor, "CALL mg.procedures() YIELD * WITH name, signature, "
-                    "is_write WHERE name STARTS WITH 'write' "
-                    f"RETURN {result_order}"):
+        cursor,
+        "CALL mg.procedures() YIELD * WITH name, signature, "
+        "is_write WHERE name STARTS WITH 'write' "
+        f"RETURN {result_order}",
+    ):
         assert proc[is_write] is True
 
     for proc in execute_and_fetch_all(
-            cursor, "CALL mg.procedures() YIELD * WITH name, signature, "
-                    "is_write WHERE NOT name STARTS WITH 'write' "
-                    f"RETURN {result_order}"):
+        cursor,
+        "CALL mg.procedures() YIELD * WITH name, signature, "
+        "is_write WHERE NOT name STARTS WITH 'write' "
+        f"RETURN {result_order}",
+    ):
         assert proc[is_write] is False
 
     assert cursor.description[0].name == "name"
@@ -41,8 +44,7 @@ def test_is_write(connection):
 def test_single_vertex(connection):
     cursor = connection.cursor()
     assert has_n_result_row(cursor, "MATCH (n) RETURN n", 0)
-    result = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")
+    result = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")
     vertex = result[0][0]
     assert isinstance(vertex, mgclient.Node)
     assert has_one_result_row(cursor, "MATCH (n) RETURN n")
@@ -50,14 +52,13 @@ def test_single_vertex(connection):
     assert vertex.properties == {}
 
     def add_label(label: str):
-        execute_and_fetch_all(
-            cursor, f"MATCH (n) CALL write.add_label(n, '{label}') "
-                    "YIELD * RETURN *")
+        execute_and_fetch_all(cursor, f"MATCH (n) CALL write.add_label(n, '{label}') " "YIELD * RETURN *")
 
     def remove_label(label: str):
         execute_and_fetch_all(
-            cursor, f"MATCH (n) CALL write.remove_label(n, '{label}') "
-                    "YIELD * RETURN *")
+            cursor,
+            f"MATCH (n) CALL write.remove_label(n, '{label}') " "YIELD * RETURN *",
+        )
 
     def get_vertex() -> mgclient.Node:
         return execute_and_fetch_all(cursor, "MATCH (n) RETURN n")[0][0]
@@ -65,8 +66,10 @@ def test_single_vertex(connection):
     def set_property(property_name: str, property: typing.Any):
         nonlocal cursor
         execute_and_fetch_all(
-            cursor, f"MATCH (n) CALL write.set_property(n, '{property_name}', "
-                    "$property) YIELD * RETURN *", {"property": property})
+            cursor,
+            f"MATCH (n) CALL write.set_property(n, '{property_name}', " "$property) YIELD * RETURN *",
+            {"property": property},
+        )
 
     label_1 = "LABEL1"
     label_2 = "LABEL2"
@@ -89,24 +92,23 @@ def test_single_vertex(connection):
     set_property(property_name, None)
     assert get_vertex().properties == {}
 
-    execute_and_fetch_all(
-        cursor, "MATCH (n) CALL write.delete_vertex(n) YIELD * RETURN 1")
+    execute_and_fetch_all(cursor, "MATCH (n) CALL write.delete_vertex(n) YIELD * RETURN 1")
     assert has_n_result_row(cursor, "MATCH (n) RETURN n", 0)
 
 
 def test_single_edge(connection):
     cursor = connection.cursor()
     assert has_n_result_row(cursor, "MATCH (n) RETURN n", 0)
-    v1_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
-    v2_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v1_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v2_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
     edge_type = "EDGE"
     edge = execute_and_fetch_all(
-        cursor, f"MATCH (n) WHERE id(n) = {v1_id} "
-                f"MATCH (m) WHERE id(m) = {v2_id} "
-                f"CALL write.create_edge(n, m, '{edge_type}') "
-                "YIELD e RETURN e")[0][0]
+        cursor,
+        f"MATCH (n) WHERE id(n) = {v1_id} "
+        f"MATCH (m) WHERE id(m) = {v2_id} "
+        f"CALL write.create_edge(n, m, '{edge_type}') "
+        "YIELD e RETURN e",
+    )[0][0]
 
     assert edge.type == edge_type
     assert edge.properties == {}
@@ -120,9 +122,10 @@ def test_single_edge(connection):
     def set_property(property_name: str, property: typing.Any):
         nonlocal cursor
         execute_and_fetch_all(
-            cursor, "MATCH ()-[e]->() "
-                    f"CALL write.set_property(e, '{property_name}', "
-                    "$property) YIELD * RETURN *", {"property": property})
+            cursor,
+            "MATCH ()-[e]->() " f"CALL write.set_property(e, '{property_name}', " "$property) YIELD * RETURN *",
+            {"property": property},
+        )
 
     set_property(property_name, property_value_1)
     assert get_edge().properties == {property_name: property_value_1}
@@ -130,60 +133,68 @@ def test_single_edge(connection):
     assert get_edge().properties == {property_name: property_value_2}
     set_property(property_name, None)
     assert get_edge().properties == {}
-    execute_and_fetch_all(
-        cursor, "MATCH ()-[e]->() CALL write.delete_edge(e) YIELD * RETURN 1")
+    execute_and_fetch_all(cursor, "MATCH ()-[e]->() CALL write.delete_edge(e) YIELD * RETURN 1")
     assert has_n_result_row(cursor, "MATCH ()-[e]->() RETURN e", 0)
 
 
 def test_detach_delete_vertex(connection):
     cursor = connection.cursor()
     assert has_n_result_row(cursor, "MATCH (n) RETURN n", 0)
-    v1_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
-    v2_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v1_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v2_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
     execute_and_fetch_all(
-        cursor, f"MATCH (n) WHERE id(n) = {v1_id} "
+        cursor,
+        f"MATCH (n) WHERE id(n) = {v1_id} "
         f"MATCH (m) WHERE id(m) = {v2_id} "
         f"CALL write.create_edge(n, m, 'EDGE') "
-        "YIELD e RETURN e")
+        "YIELD e RETURN e",
+    )
 
     assert has_one_result_row(cursor, "MATCH (n)-[e]->(m) RETURN n, e, m")
     execute_and_fetch_all(
-        cursor, f"MATCH (n) WHERE id(n) = {v1_id} "
-                "CALL write.detach_delete_vertex(n) YIELD * RETURN 1")
+        cursor,
+        f"MATCH (n) WHERE id(n) = {v1_id} " "CALL write.detach_delete_vertex(n) YIELD * RETURN 1",
+    )
     assert has_n_result_row(cursor, "MATCH (n)-[e]->(m) RETURN n, e, m", 0)
     assert has_n_result_row(cursor, "MATCH ()-[e]->() RETURN e", 0)
-    assert has_one_result_row(
-        cursor, f"MATCH (n) WHERE id(n) = {v2_id} RETURN n")
+    assert has_one_result_row(cursor, f"MATCH (n) WHERE id(n) = {v2_id} RETURN n")
 
 
 def test_graph_mutability(connection):
     cursor = connection.cursor()
     assert has_n_result_row(cursor, "MATCH (n) RETURN n", 0)
-    v1_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
-    v2_id = execute_and_fetch_all(
-        cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v1_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
+    v2_id = execute_and_fetch_all(cursor, "CALL write.create_vertex() YIELD v RETURN v")[0][0].id
     execute_and_fetch_all(
-        cursor, f"MATCH (n) WHERE id(n) = {v1_id} "
+        cursor,
+        f"MATCH (n) WHERE id(n) = {v1_id} "
         f"MATCH (m) WHERE id(m) = {v2_id} "
         f"CALL write.create_edge(n, m, 'EDGE') "
-        "YIELD e RETURN e")
+        "YIELD e RETURN e",
+    )
 
     def test_mutability(is_write: bool):
         module = "write" if is_write else "read"
-        assert execute_and_fetch_all(
-            cursor, f"CALL {module}.graph_is_mutable() "
-                    "YIELD mutable RETURN mutable")[0][0] is is_write
-        assert execute_and_fetch_all(
-            cursor, "MATCH (n) "
-                    f"CALL {module}.underlying_graph_is_mutable(n) "
-                    "YIELD mutable RETURN mutable")[0][0] is is_write
-        assert execute_and_fetch_all(
-            cursor, "MATCH (n)-[e]->(m) "
-                    f"CALL {module}.underlying_graph_is_mutable(e) "
-                    "YIELD mutable RETURN mutable")[0][0] is is_write
+        assert (
+            execute_and_fetch_all(cursor, f"CALL {module}.graph_is_mutable() " "YIELD mutable RETURN mutable",)[
+                0
+            ][0]
+            is is_write
+        )
+        assert (
+            execute_and_fetch_all(
+                cursor,
+                "MATCH (n) " f"CALL {module}.underlying_graph_is_mutable(n) " "YIELD mutable RETURN mutable",
+            )[0][0]
+            is is_write
+        )
+        assert (
+            execute_and_fetch_all(
+                cursor,
+                "MATCH (n)-[e]->(m) " f"CALL {module}.underlying_graph_is_mutable(e) " "YIELD mutable RETURN mutable",
+            )[0][0]
+            is is_write
+        )
 
     test_mutability(True)
     test_mutability(False)

tests/gql_behave/environment.py

@@ -20,6 +20,7 @@ from neo4j import GraphDatabase, basic_auth
 
 # Helper class and functions
 
+
 class TestResults:
     def __init__(self):
         self.total = 0
@@ -39,18 +40,16 @@ class TestResults:
 
 # Behave specific functions
 
+
 def before_all(context):
     # logging
     logging.basicConfig(level="DEBUG")
     context.log = logging.getLogger(__name__)
 
     # driver
-    uri = "bolt://{}:{}".format(context.config.db_host,
-                                context.config.db_port)
-    auth_token = basic_auth(
-        context.config.db_user, context.config.db_pass)
-    context.driver = GraphDatabase.driver(uri, auth=auth_token,
-                                          encrypted=False)
+    uri = "bolt://{}:{}".format(context.config.db_host, context.config.db_port)
+    auth_token = basic_auth(context.config.db_user, context.config.db_pass)
+    context.driver = GraphDatabase.driver(uri, auth=auth_token, encrypted=False)
 
     # test results
     context.test_results = TestResults()
@@ -63,8 +62,7 @@ def before_scenario(context, scenario):
 
 def after_scenario(context, scenario):
     context.test_results.add_test(scenario.status)
-    if context.config.single_scenario or \
-            (context.config.single_fail and scenario.status == "failed"):
+    if context.config.single_scenario or (context.config.single_fail and scenario.status == "failed"):
         print("Press enter to continue")
         sys.stdin.readline()
 
@@ -87,5 +85,5 @@ def after_all(context):
         "test_suite": context.config.test_suite,
     }
 
-    with open(context.config.stats_file, 'w') as f:
+    with open(context.config.stats_file, "w") as f:
         json.dump(js, f)

tests/gql_behave/run.py

@@ -55,22 +55,14 @@ def main():
     add_config("--test-directory")
 
     # Arguments that should be passed on to Behave
-    add_argument("--db-host", default="127.0.0.1",
-                 help="server host (default is 127.0.0.1)")
-    add_argument("--db-port", default="7687",
-                 help="server port (default is 7687)")
-    add_argument("--db-user", default="memgraph",
-                 help="server user (default is memgraph)")
-    add_argument("--db-pass", default="memgraph",
-                 help="server pass (default is memgraph)")
-    add_argument("--stop", action="store_true",
-                 help="stop testing after first fail")
-    add_argument("--single-fail", action="store_true",
-                 help="pause after failed scenario")
-    add_argument("--single-scenario", action="store_true",
-                 help="pause after every scenario")
-    add_argument("--single-feature", action="store_true",
-                 help="pause after every feature")
+    add_argument("--db-host", default="127.0.0.1", help="server host (default is 127.0.0.1)")
+    add_argument("--db-port", default="7687", help="server port (default is 7687)")
+    add_argument("--db-user", default="memgraph", help="server user (default is memgraph)")
+    add_argument("--db-pass", default="memgraph", help="server pass (default is memgraph)")
+    add_argument("--stop", action="store_true", help="stop testing after first fail")
+    add_argument("--single-fail", action="store_true", help="pause after failed scenario")
+    add_argument("--single-scenario", action="store_true", help="pause after every scenario")
+    add_argument("--single-feature", action="store_true", help="pause after every feature")
     add_argument("--stats-file", default="", help="statistics output file")
 
     # Parse arguments
@@ -96,5 +88,5 @@ def main():
     return behave_main(behave_args)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     sys.exit(main())

tests/gql_behave/steps/binary_tree.py

@@ -15,11 +15,11 @@ from behave import given
 import graph
 
 
-@given(u'the binary-tree-1 graph')
+@given("the binary-tree-1 graph")
 def step_impl(context):
-    graph.create_graph('binary-tree-1', context)
+    graph.create_graph("binary-tree-1", context)
 
 
-@given(u'the binary-tree-2 graph')
+@given("the binary-tree-2 graph")
 def step_impl(context):
-    graph.create_graph('binary-tree-2', context)
+    graph.create_graph("binary-tree-2", context)

tests/gql_behave/steps/database.py

@@ -11,6 +11,7 @@
 
 # -*- coding: utf-8 -*-
 
+
 def query(q, context, params={}):
     """
     Function used to execute query on database. Query results are
@@ -44,7 +45,7 @@ def query(q, context, params={}):
     except Exception as e:
         # exception
         context.exception = e
-        context.log.info('%s', str(e))
+        context.log.info("%s", str(e))
     finally:
         session.close()
 

tests/gql_behave/steps/errors.py

@@ -24,234 +24,234 @@ def handle_error(context):
     @param context:
         behave.runner.Context, context of behave.
     """
-    assert(context.exception is not None)
+    assert context.exception is not None
 
 
-@then('an error should be raised')
+@then("an error should be raised")
 def error(context):
     handle_error(context)
 
 
-@then('a SyntaxError should be raised at compile time: NestedAggregation')
+@then("a SyntaxError should be raised at compile time: NestedAggregation")
 def syntax_error(context):
     handle_error(context)
 
 
-@then('TypeError should be raised at compile time: IncomparableValues')
+@then("TypeError should be raised at compile time: IncomparableValues")
 def type_error(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at compile time: IncomparableValues')
+@then("a TypeError should be raised at compile time: IncomparableValues")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: RequiresDirectedRelationship')
+@then("a SyntaxError should be raised at compile time: RequiresDirectedRelationship")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidRelationshipPattern')
+@then("a SyntaxError should be raised at compile time: InvalidRelationshipPattern")
 def syntax_error(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: MapElementAccessByNonString')
+@then("a TypeError should be raised at runtime: MapElementAccessByNonString")
 def type_error(context):
     handle_error(context)
 
 
-@then(u'a ConstraintVerificationFailed should be raised at runtime: DeleteConnectedNode')
+@then("a ConstraintVerificationFailed should be raised at runtime: DeleteConnectedNode")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: ListElementAccessByNonInteger')
+@then("a TypeError should be raised at runtime: ListElementAccessByNonInteger")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidArgumentType')
+@then("a SyntaxError should be raised at compile time: InvalidArgumentType")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: InvalidElementAccess')
+@then("a TypeError should be raised at runtime: InvalidElementAccess")
 def step(context):
     handle_error(context)
 
 
-@then(u'a ArgumentError should be raised at runtime: NumberOutOfRange')
+@then("a ArgumentError should be raised at runtime: NumberOutOfRange")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: InvalidArgumentValue')
+@then("a TypeError should be raised at runtime: InvalidArgumentValue")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: VariableAlreadyBound')
+@then("a SyntaxError should be raised at compile time: VariableAlreadyBound")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: IncomparableValues')
+@then("a TypeError should be raised at runtime: IncomparableValues")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at runtime: PropertyAccessOnNonMap')
+@then("a TypeError should be raised at runtime: PropertyAccessOnNonMap")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidUnicodeLiteral')
+@then("a SyntaxError should be raised at compile time: InvalidUnicodeLiteral")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SemanticError should be raised at compile time: MergeReadOwnWrites')
+@then("a SemanticError should be raised at compile time: MergeReadOwnWrites")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidAggregation')
+@then("a SyntaxError should be raised at compile time: InvalidAggregation")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: NoExpressionAlias')
+@then("a SyntaxError should be raised at compile time: NoExpressionAlias")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: UndefinedVariable')
+@then("a SyntaxError should be raised at compile time: UndefinedVariable")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: VariableTypeConflict')
+@then("a SyntaxError should be raised at compile time: VariableTypeConflict")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: DifferentColumnsInUnion')
+@then("a SyntaxError should be raised at compile time: DifferentColumnsInUnion")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidClauseComposition')
+@then("a SyntaxError should be raised at compile time: InvalidClauseComposition")
 def step(context):
     handle_error(context)
 
 
-@then(u'a TypeError should be raised at compile time: InvalidPropertyType')
+@then("a TypeError should be raised at compile time: InvalidPropertyType")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: ColumnNameConflict')
+@then("a SyntaxError should be raised at compile time: ColumnNameConflict")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: NoVariablesInScope')
+@then("a SyntaxError should be raised at compile time: NoVariablesInScope")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidDelete')
+@then("a SyntaxError should be raised at compile time: InvalidDelete")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: NegativeIntegerArgument')
+@then("a SyntaxError should be raised at compile time: NegativeIntegerArgument")
 def step(context):
     handle_error(context)
 
 
-@then(u'a EntityNotFound should be raised at runtime: DeletedEntityAccess')
+@then("a EntityNotFound should be raised at runtime: DeletedEntityAccess")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: RelationshipUniquenessViolation')
+@then("a SyntaxError should be raised at compile time: RelationshipUniquenessViolation")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: CreatingVarLength')
+@then("a SyntaxError should be raised at compile time: CreatingVarLength")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidParameterUse')
+@then("a SyntaxError should be raised at compile time: InvalidParameterUse")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: FloatingPointOverflow')
+@then("a SyntaxError should be raised at compile time: FloatingPointOverflow")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time InvalidArgumentExpression')
+@then("a SyntaxError should be raised at compile time InvalidArgumentExpression")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time InvalidUnicodeCharacter')
+@then("a SyntaxError should be raised at compile time InvalidUnicodeCharacter")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: NonConstantExpression')
+@then("a SyntaxError should be raised at compile time: NonConstantExpression")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: NoSingleRelationshipType')
+@then("a SyntaxError should be raised at compile time: NoSingleRelationshipType")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: UnknownFunction')
+@then("a SyntaxError should be raised at compile time: UnknownFunction")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidNumberLiteral')
+@then("a SyntaxError should be raised at compile time: InvalidNumberLiteral")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidArgumentExpression')
+@then("a SyntaxError should be raised at compile time: InvalidArgumentExpression")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidUnicodeCharacter')
+@then("a SyntaxError should be raised at compile time: InvalidUnicodeCharacter")
 def step(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidArgumentPassingMode')
+@then("a SyntaxError should be raised at compile time: InvalidArgumentPassingMode")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a SyntaxError should be raised at compile time: InvalidNumberOfArguments')
+@then("a SyntaxError should be raised at compile time: InvalidNumberOfArguments")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a ParameterMissing should be raised at compile time: MissingParameter')
+@then("a ParameterMissing should be raised at compile time: MissingParameter")
 def step_impl(context):
     handle_error(context)
 
 
-@then(u'a ProcedureError should be raised at compile time: ProcedureNotFound')
+@then("a ProcedureError should be raised at compile time: ProcedureNotFound")
 def step_impl(context):
     handle_error(context)

tests/gql_behave/steps/graph.py

@@ -23,12 +23,12 @@ def clear_graph(context):
         database.query("MATCH (n) DETACH DELETE n", context)
 
 
-@given('an empty graph')
+@given("an empty graph")
 def empty_graph_step(context):
     clear_graph(context)
 
 
-@given('any graph')
+@given("any graph")
 def any_graph_step(context):
     clear_graph(context)
 
@@ -46,20 +46,18 @@ def create_graph(name, context):
     and sets graph properties to beginning values.
     """
     clear_graph(context)
-    path = os.path.join(context.config.test_directory, "graphs",
-                        name + ".cypher")
+    path = os.path.join(context.config.test_directory, "graphs", name + ".cypher")
 
-    q_marks = ["'", '"', '`']
+    q_marks = ["'", '"', "`"]
 
-    with open(path, 'r') as f:
-        content = f.read().replace('\n', ' ')
-        single_query = ''
+    with open(path, "r") as f:
+        content = f.read().replace("\n", " ")
+        single_query = ""
         quote = None
         i = 0
         while i < len(content):
             ch = content[i]
-            if ch == '\\' and i != len(content) - 1 and \
-                    content[i + 1] in q_marks:
+            if ch == "\\" and i != len(content) - 1 and content[i + 1] in q_marks:
                 single_query += ch + content[i + 1]
                 i += 2
             else:
@@ -68,9 +66,9 @@ def create_graph(name, context):
                     quote = None
                 elif ch in q_marks and quote is None:
                     quote = ch
-                if ch == ';' and quote is None:
+                if ch == ";" and quote is None:
                     database.query(single_query, context)
-                    single_query = ''
+                    single_query = ""
                 i += 1
-        if single_query.strip() != '':
+        if single_query.strip() != "":
             database.query(single_query, context)

tests/gql_behave/steps/parser.py

@@ -29,13 +29,13 @@ def parse(el, ignore_order):
     @return:
         Parsed string of element.
     """
-    if el.startswith('(') and el.endswith(')'):
+    if el.startswith("(") and el.endswith(")"):
         return parse_node(el, ignore_order)
-    if el.startswith('<') and el.endswith('>'):
+    if el.startswith("<") and el.endswith(">"):
         return parse_path(el, ignore_order)
-    if el.startswith('{') and el.endswith('}'):
+    if el.startswith("{") and el.endswith("}"):
         return parse_map(el, ignore_order)
-    if el.startswith('[') and el.endswith(']'):
+    if el.startswith("[") and el.endswith("]"):
         if is_list(el):
             return parse_list(el, ignore_order)
         else:
@@ -51,7 +51,7 @@ def is_list(el):
     @return:
         true if el is list.
     """
-    if el[1] == ':':
+    if el[1] == ":":
         return False
     return True
 
@@ -64,20 +64,20 @@ def parse_path(path, ignore_order):
     @return:
         parsed path
     """
-    parsed_path = '<'
+    parsed_path = "<"
     dif_open_closed_brackets = 0
     for i in range(1, len(path) - 1):
-        if path[i] == '(' or path[i] == '{' or path[i] == '[':
+        if path[i] == "(" or path[i] == "{" or path[i] == "[":
             dif_open_closed_brackets += 1
             if dif_open_closed_brackets == 1:
                 start = i
-        if path[i] == ')' or path[i] == '}' or path[i] == ']':
+        if path[i] == ")" or path[i] == "}" or path[i] == "]":
             dif_open_closed_brackets -= 1
             if dif_open_closed_brackets == 0:
-                parsed_path += parse(path[start:(i + 1)], ignore_order)
+                parsed_path += parse(path[start : (i + 1)], ignore_order)
         elif dif_open_closed_brackets == 0:
             parsed_path += path[i]
-    parsed_path += '>'
+    parsed_path += ">"
     return parsed_path
 
 
@@ -89,28 +89,27 @@ def parse_node(node_str, ignore_order):
     @return:
         parsed node
     """
-    label = ''
+    label = ""
     labels = []
     props_start = None
     for i in range(1, len(node_str)):
-        if node_str[i] == ':' or node_str[i] == ')' or node_str[i] == '{':
-            if label.startswith(':'):
+        if node_str[i] == ":" or node_str[i] == ")" or node_str[i] == "{":
+            if label.startswith(":"):
                 labels.append(label)
-                label = ''
+                label = ""
         label += node_str[i]
 
-        if node_str[i] == '{':
+        if node_str[i] == "{":
             props_start = i
             break
 
     labels.sort()
-    parsed_node = '('
+    parsed_node = "("
     for label in labels:
         parsed_node += label
     if props_start is not None:
-        parsed_node += parse_map(
-            node_str[props_start:len(node_str) - 1], ignore_order)
-    parsed_node += ')'
+        parsed_node += parse_map(node_str[props_start : len(node_str) - 1], ignore_order)
+    parsed_node += ")"
     return parsed_node
 
 
@@ -123,23 +122,23 @@ def parse_map(props, ignore_order):
         parsed map
     """
     dif_open_closed_brackets = 0
-    prop = ''
+    prop = ""
     list_props = []
     for i in range(1, len(props) - 1):
-        if props[i] == ',' and dif_open_closed_brackets == 0:
+        if props[i] == "," and dif_open_closed_brackets == 0:
             list_props.append(prop_to_str(prop, ignore_order))
-            prop = ''
+            prop = ""
         else:
             prop += props[i]
-        if props[i] == '(' or props[i] == '{' or props[i] == '[':
+        if props[i] == "(" or props[i] == "{" or props[i] == "[":
             dif_open_closed_brackets += 1
-        elif props[i] == ')' or props[i] == '}' or props[i] == ']':
+        elif props[i] == ")" or props[i] == "}" or props[i] == "]":
             dif_open_closed_brackets -= 1
-    if prop != '':
+    if prop != "":
         list_props.append(prop_to_str(prop, ignore_order))
 
     list_props.sort()
-    return '{' + ','.join(list_props) + '}'
+    return "{" + ",".join(list_props) + "}"
 
 
 def prop_to_str(prop, ignore_order):
@@ -152,8 +151,8 @@ def prop_to_str(prop, ignore_order):
     @return:
         parsed prop
     """
-    key = prop.split(':', 1)[0]
-    val = prop.split(':', 1)[1]
+    key = prop.split(":", 1)[0]
+    val = prop.split(":", 1)[1]
     return key + ":" + parse(val, ignore_order)
 
 
@@ -166,25 +165,25 @@ def parse_list(l, ignore_order):
         parsed list
     """
     dif_open_closed_brackets = 0
-    el = ''
+    el = ""
     list_el = []
     for i in range(1, len(l) - 1):
-        if l[i] == ',' and dif_open_closed_brackets == 0:
+        if l[i] == "," and dif_open_closed_brackets == 0:
             list_el.append(parse(el, ignore_order))
-            el = ''
+            el = ""
         else:
             el += l[i]
-        if l[i] == '(' or l[i] == '{' or l[i] == '[':
+        if l[i] == "(" or l[i] == "{" or l[i] == "[":
             dif_open_closed_brackets += 1
-        elif l[i] == ')' or l[i] == '}' or l[i] == ']':
+        elif l[i] == ")" or l[i] == "}" or l[i] == "]":
             dif_open_closed_brackets -= 1
-    if el != '':
+    if el != "":
         list_el.append(parse(el, ignore_order))
 
     if ignore_order:
         list_el.sort()
 
-    return '[' + ','.join(list_el) + ']'
+    return "[" + ",".join(list_el) + "]"
 
 
 def parse_rel(rel, ignore_order):
@@ -195,25 +194,25 @@ def parse_rel(rel, ignore_order):
     @return:
         parsed relationship
     """
-    label = ''
+    label = ""
     labels = []
     props_start = None
     for i in range(1, len(rel)):
-        if rel[i] == ':' or rel[i] == ']' or rel[i] == '{':
-            if label.startswith(':'):
+        if rel[i] == ":" or rel[i] == "]" or rel[i] == "{":
+            if label.startswith(":"):
                 labels.append(label)
-                label = ''
+                label = ""
         label += rel[i]
 
-        if rel[i] == '{':
+        if rel[i] == "{":
             props_start = i
             break
 
     labels.sort()
-    parsed_rel = '['
+    parsed_rel = "["
     for label in labels:
         parsed_rel += label
     if props_start is not None:
-        parsed_rel += parse_map(rel[props_start:len(rel) - 1], ignore_order)
-    parsed_rel += ']'
+        parsed_rel += parse_map(rel[props_start : len(rel) - 1], ignore_order)
+    parsed_rel += "]"
     return parsed_rel

tests/gql_behave/steps/query.py

@@ -17,32 +17,29 @@ from behave import given, then, step, when
 from neo4j.graph import Node, Path, Relationship
 
 
-@given('parameters are')
+@given("parameters are")
 def parameters_step(context):
     context.test_parameters.set_parameters_from_table(context.table)
 
 
-@then('parameters are')
+@then("parameters are")
 def parameters_step(context):
     context.test_parameters.set_parameters_from_table(context.table)
 
 
-@step('having executed')
+@step("having executed")
 def having_executed_step(context):
-    context.results = database.query(
-        context.text, context, context.test_parameters.get_parameters())
+    context.results = database.query(context.text, context, context.test_parameters.get_parameters())
 
 
-@when('executing query')
+@when("executing query")
 def executing_query_step(context):
-    context.results = database.query(
-        context.text, context, context.test_parameters.get_parameters())
+    context.results = database.query(context.text, context, context.test_parameters.get_parameters())
 
 
-@when('executing control query')
+@when("executing control query")
 def executing_query_step(context):
-    context.results = database.query(
-        context.text, context, context.test_parameters.get_parameters())
+    context.results = database.query(context.text, context, context.test_parameters.get_parameters())
 
 
 def parse_props(props_key_value):
@@ -93,11 +90,11 @@ def to_string(element):
         # parsing Node
         sol = "("
         if element.labels:
-            sol += ':' + ': '.join(element.labels)
+            sol += ":" + ": ".join(element.labels)
 
         if element.keys():
             if element.labels:
-                sol += ' '
+                sol += " "
             sol += parse_props(element.items())
 
         sol += ")"
@@ -109,7 +106,7 @@ def to_string(element):
         if element.type:
             sol += element.type
         if element.keys():
-            sol += ' '
+            sol += " "
         sol += parse_props(element.items())
         sol += "]"
         return sol
@@ -144,12 +141,12 @@ def to_string(element):
 
     elif isinstance(element, list):
         # parsing list
-        sol = '['
+        sol = "["
         el_str = []
         for el in element:
             el_str.append(to_string(el))
-        sol += ', '.join(el_str)
-        sol += ']'
+        sol += ", ".join(el_str)
+        sol += "]"
 
         return sol
 
@@ -162,23 +159,22 @@ def to_string(element):
     elif isinstance(element, dict):
         # parsing map
         if len(element) == 0:
-            return '{}'
-        sol = '{'
+            return "{}"
+        sol = "{"
         for key, val in element.items():
-            sol += key + ':' + to_string(val) + ','
-        sol = sol[:-1] + '}'
+            sol += key + ":" + to_string(val) + ","
+        sol = sol[:-1] + "}"
         return sol
 
     elif isinstance(element, float):
         # parsing float, scientific
-        if 'e' in str(element):
-            if str(element)[-3] == '-':
+        if "e" in str(element):
+            if str(element)[-3] == "-":
                 zeroes = int(str(element)[-2:]) - 1
-                num_str = ''
-                if str(element)[0] == '-':
-                    num_str += '-'
-                num_str += '.' + zeroes * '0' + \
-                    str(element)[:-4].replace("-", "").replace(".", "")
+                num_str = ""
+                if str(element)[0] == "-":
+                    num_str += "-"
+                num_str += "." + zeroes * "0" + str(element)[:-4].replace("-", "").replace(".", "")
                 return num_str
 
     return str(element)
@@ -201,9 +197,14 @@ def get_result_rows(context, ignore_order):
         keys = result.keys()
         values = result.values()
         for i in range(0, len(keys)):
-            result_rows.append(keys[i] + ":" + parser.parse(
-                to_string(values[i]).replace("\n", "\\n").replace(" ", ""),
-                ignore_order))
+            result_rows.append(
+                keys[i]
+                + ":"
+                + parser.parse(
+                    to_string(values[i]).replace("\n", "\\n").replace(" ", ""),
+                    ignore_order,
+                )
+            )
     return result_rows
 
 
@@ -221,9 +222,7 @@ def get_expected_rows(context, ignore_order):
     expected_rows = []
     for row in context.table:
         for col in context.table.headings:
-            expected_rows.append(
-                col + ":" + parser.parse(row[col].replace(" ", ""),
-                                         ignore_order))
+            expected_rows.append(col + ":" + parser.parse(row[col].replace(" ", ""), ignore_order))
     return expected_rows
 
 
@@ -242,13 +241,13 @@ def validate(context, ignore_order):
 
     context.log.info("Expected: %s", str(expected_rows))
     context.log.info("Results:  %s", str(result_rows))
-    assert(len(expected_rows) == len(result_rows))
+    assert len(expected_rows) == len(result_rows)
 
     for i in range(0, len(expected_rows)):
         if expected_rows[i] in result_rows:
             result_rows.remove(expected_rows[i])
         else:
-            assert(False)
+            assert False
 
 
 def validate_in_order(context, ignore_order):
@@ -267,26 +266,26 @@ def validate_in_order(context, ignore_order):
 
     context.log.info("Expected: %s", str(expected_rows))
     context.log.info("Results:  %s", str(result_rows))
-    assert(len(expected_rows) == len(result_rows))
+    assert len(expected_rows) == len(result_rows)
 
     for i in range(0, len(expected_rows)):
         if expected_rows[i] != result_rows[i]:
-            assert(False)
+            assert False
 
 
-@then('the result should be')
+@then("the result should be")
 def expected_result_step(context):
     validate(context, False)
     check_exception(context)
 
 
-@then('the result should be, in order')
+@then("the result should be, in order")
 def expected_result_step(context):
     validate_in_order(context, False)
     check_exception(context)
 
 
-@then('the result should be (ignoring element order for lists)')
+@then("the result should be (ignoring element order for lists)")
 def expected_result_step(context):
     validate(context, True)
     check_exception(context)
@@ -295,20 +294,20 @@ def expected_result_step(context):
 def check_exception(context):
     if context.exception is not None:
         context.log.info("Exception when executing query!")
-        assert(False)
+        assert False
 
 
-@then('the result should be empty')
+@then("the result should be empty")
 def empty_result_step(context):
-    assert(len(context.results) == 0)
+    assert len(context.results) == 0
     check_exception(context)
 
 
-@then('the side effects should be')
+@then("the side effects should be")
 def side_effects_step(context):
     return
 
 
-@then('no side effects')
+@then("no side effects")
 def side_effects_step(context):
     return

tests/gql_behave/steps/test_parameters.py

@@ -40,15 +40,15 @@ class TestParameters:
         par = dict()
         for row in table:
             par[row[0]] = self.parse_parameters(row[1])
-            if isinstance(par[row[0]], str) and par[row[0]].startswith("'") \
-                    and par[row[0]].endswith("'"):
-                par[row[0]] = par[row[0]][1:len(par[row[0]]) - 1]
+            if isinstance(par[row[0]], str) and par[row[0]].startswith("'") and par[row[0]].endswith("'"):
+                par[row[0]] = par[row[0]][1 : len(par[row[0]]) - 1]
         par[table.headings[0]] = self.parse_parameters(table.headings[1])
-        if isinstance(par[table.headings[0]], str) and \
-                par[table.headings[0]].startswith("'") and \
-                par[table.headings[0]].endswith("'"):
-            par[table.headings[0]] = \
-                par[table.headings[0]][1:len(par[table.headings[0]]) - 1]
+        if (
+            isinstance(par[table.headings[0]], str)
+            and par[table.headings[0]].startswith("'")
+            and par[table.headings[0]].endswith("'")
+        ):
+            par[table.headings[0]] = par[table.headings[0]][1 : len(par[table.headings[0]]) - 1]
 
         self.parameters = par
 

tests/integration/audit/runner.py

@@ -37,20 +37,14 @@ QUERIES = [
     ("CREATE (n {name: $name})", {"name": 5, "leftover": 42}),
     ("MATCH (n), (m) CREATE (n)-[:e {when: $when}]->(m)", {"when": 42}),
     ("MATCH (n) RETURN n", {}),
-    (
-        "MATCH (n), (m {type: $type}) RETURN count(n), count(m)",
-        {"type": "dadada"}
-    ),
+    ("MATCH (n), (m {type: $type}) RETURN count(n), count(m)", {"type": "dadada"}),
     (
         "MERGE (n) ON CREATE SET n.created = timestamp() "
         "ON MATCH SET n.lastSeen = timestamp() "
         "RETURN n.name, n.created, n.lastSeen",
-        {}
-    ),
-    (
-        "MATCH (n {value: $value}) SET n.value = 0 RETURN n",
-        {"value": "nandare!"}
+        {},
     ),
+    ("MATCH (n {value: $value}) SET n.value = 0 RETURN n", {"value": "nandare!"}),
     ("MATCH (n), (m) SET n.value = m.value", {}),
     ("MATCH (n {test: $test}) REMOVE n.value", {"test": 48}),
     ("MATCH (n), (m) REMOVE n.value, m.value", {}),
@@ -74,7 +68,8 @@ def execute_test(memgraph_binary, tester_binary):
         storage_directory.name,
         "--audit-enabled",
         "--log-file=memgraph.log",
-        "--log-level=TRACE"]
+        "--log-level=TRACE",
+    ]
 
     # Start the memgraph binary
     memgraph = subprocess.Popen(list(map(str, memgraph_args)))
@@ -92,8 +87,13 @@ def execute_test(memgraph_binary, tester_binary):
     def execute_queries(queries):
         for query, params in queries:
             print(query, params)
-            args = [tester_binary, "--query", query,
-                    "--params-json", json.dumps(params)]
+            args = [
+                tester_binary,
+                "--query",
+                query,
+                "--params-json",
+                json.dumps(params),
+            ]
             subprocess.run(args).check_returncode()
 
     # Execute all queries
@@ -109,10 +109,17 @@ def execute_test(memgraph_binary, tester_binary):
     # Verify the written log
     print("\033[1;36m~~ Starting log verification ~~\033[0m")
     with open(os.path.join(storage_directory.name, "audit", "audit.log")) as f:
-        reader = csv.reader(f, delimiter=',', doublequote=False,
-                            escapechar='\\', lineterminator='\n',
-                            quotechar='"', quoting=csv.QUOTE_MINIMAL,
-                            skipinitialspace=False, strict=True)
+        reader = csv.reader(
+            f,
+            delimiter=",",
+            doublequote=False,
+            escapechar="\\",
+            lineterminator="\n",
+            quotechar='"',
+            quoting=csv.QUOTE_MINIMAL,
+            skipinitialspace=False,
+            strict=True,
+        )
         queries = []
         for line in reader:
             timestamp, address, username, query, params = line
@@ -120,15 +127,13 @@ def execute_test(memgraph_binary, tester_binary):
             queries.append((query, params))
             print(query, params)
 
-        assert queries == QUERIES, "Logged queries don't match " \
-                                   "executed queries!"
+        assert queries == QUERIES, "Logged queries don't match " "executed queries!"
     print("\033[1;36m~~ Finished log verification ~~\033[0m\n")
 
 
 if __name__ == "__main__":
     memgraph_binary = os.path.join(PROJECT_DIR, "build", "memgraph")
-    tester_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                 "integration", "audit", "tester")
+    tester_binary = os.path.join(PROJECT_DIR, "build", "tests", "integration", "audit", "tester")
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--memgraph", default=memgraph_binary)

tests/integration/auth/runner.py

@@ -29,15 +29,8 @@ PROJECT_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, "..", "..", ".."))
 
 QUERIES = [
     # CREATE
-    (
-        "CREATE (n)",
-        ("CREATE",)
-    ),
-    (
-        "MATCH (n), (m) CREATE (n)-[:e]->(m)",
-        ("CREATE", "MATCH")
-    ),
-
+    ("CREATE (n)", ("CREATE",)),
+    ("MATCH (n), (m) CREATE (n)-[:e]->(m)", ("CREATE", "MATCH")),
     # DELETE
     (
         "MATCH (n) DELETE n",
@@ -47,116 +40,43 @@ QUERIES = [
         "MATCH (n) DETACH DELETE n",
         ("DELETE", "MATCH"),
     ),
-
     # MATCH
-    (
-        "MATCH (n) RETURN n",
-        ("MATCH",)
-    ),
-    (
-        "MATCH (n), (m) RETURN count(n), count(m)",
-        ("MATCH",)
-    ),
-
+    ("MATCH (n) RETURN n", ("MATCH",)),
+    ("MATCH (n), (m) RETURN count(n), count(m)", ("MATCH",)),
     # MERGE
     (
         "MERGE (n) ON CREATE SET n.created = timestamp() "
         "ON MATCH SET n.lastSeen = timestamp() "
         "RETURN n.name, n.created, n.lastSeen",
-        ("MERGE",)
+        ("MERGE",),
     ),
-
     # SET
-    (
-        "MATCH (n) SET n.value = 0 RETURN n",
-        ("SET", "MATCH")
-    ),
-    (
-        "MATCH (n), (m) SET n.value = m.value",
-        ("SET", "MATCH")
-    ),
-
+    ("MATCH (n) SET n.value = 0 RETURN n", ("SET", "MATCH")),
+    ("MATCH (n), (m) SET n.value = m.value", ("SET", "MATCH")),
     # REMOVE
-    (
-        "MATCH (n) REMOVE n.value",
-        ("REMOVE", "MATCH")
-    ),
-    (
-        "MATCH (n), (m) REMOVE n.value, m.value",
-        ("REMOVE", "MATCH")
-    ),
-
+    ("MATCH (n) REMOVE n.value", ("REMOVE", "MATCH")),
+    ("MATCH (n), (m) REMOVE n.value, m.value", ("REMOVE", "MATCH")),
     # INDEX
-    (
-        "CREATE INDEX ON :User (id)",
-        ("INDEX",)
-    ),
-
+    ("CREATE INDEX ON :User (id)", ("INDEX",)),
     # AUTH
-    (
-        "CREATE ROLE test_role",
-        ("AUTH",)
-    ),
-    (
-        "DROP ROLE test_role",
-        ("AUTH",)
-    ),
-    (
-        "SHOW ROLES",
-        ("AUTH",)
-    ),
-    (
-        "CREATE USER test_user",
-        ("AUTH",)
-    ),
-    (
-        "SET PASSWORD FOR test_user TO '1234'",
-        ("AUTH",)
-    ),
-    (
-        "DROP USER test_user",
-        ("AUTH",)
-    ),
-    (
-        "SHOW USERS",
-        ("AUTH",)
-    ),
-    (
-        "SET ROLE FOR test_user TO test_role",
-        ("AUTH",)
-    ),
-    (
-        "CLEAR ROLE FOR test_user",
-        ("AUTH",)
-    ),
-    (
-        "GRANT ALL PRIVILEGES TO test_user",
-        ("AUTH",)
-    ),
-    (
-        "DENY ALL PRIVILEGES TO test_user",
-        ("AUTH",)
-    ),
-    (
-        "REVOKE ALL PRIVILEGES FROM test_user",
-        ("AUTH",)
-    ),
-    (
-        "SHOW PRIVILEGES FOR test_user",
-        ("AUTH",)
-    ),
-    (
-        "SHOW ROLE FOR test_user",
-        ("AUTH",)
-    ),
-    (
-        "SHOW USERS FOR test_role",
-        ("AUTH",)
-    ),
+    ("CREATE ROLE test_role", ("AUTH",)),
+    ("DROP ROLE test_role", ("AUTH",)),
+    ("SHOW ROLES", ("AUTH",)),
+    ("CREATE USER test_user", ("AUTH",)),
+    ("SET PASSWORD FOR test_user TO '1234'", ("AUTH",)),
+    ("DROP USER test_user", ("AUTH",)),
+    ("SHOW USERS", ("AUTH",)),
+    ("SET ROLE FOR test_user TO test_role", ("AUTH",)),
+    ("CLEAR ROLE FOR test_user", ("AUTH",)),
+    ("GRANT ALL PRIVILEGES TO test_user", ("AUTH",)),
+    ("DENY ALL PRIVILEGES TO test_user", ("AUTH",)),
+    ("REVOKE ALL PRIVILEGES FROM test_user", ("AUTH",)),
+    ("SHOW PRIVILEGES FOR test_user", ("AUTH",)),
+    ("SHOW ROLE FOR test_user", ("AUTH",)),
+    ("SHOW USERS FOR test_role", ("AUTH",)),
 ]
 
-UNAUTHORIZED_ERROR = "You are not authorized to execute this query! Please " \
-                     "contact your database administrator."
+UNAUTHORIZED_ERROR = "You are not authorized to execute this query! Please " "contact your database administrator."
 
 
 def wait_for_server(port, delay=0.1):
@@ -166,8 +86,15 @@ def wait_for_server(port, delay=0.1):
     time.sleep(delay)
 
 
-def execute_tester(binary, queries, should_fail=False, failure_message="",
-                   username="", password="", check_failure=True):
+def execute_tester(
+    binary,
+    queries,
+    should_fail=False,
+    failure_message="",
+    username="",
+    password="",
+    check_failure=True,
+):
     args = [binary, "--username", username, "--password", password]
     if should_fail:
         args.append("--should-fail")
@@ -200,18 +127,28 @@ def check_permissions(query_perms, user_perms):
 
 def execute_test(memgraph_binary, tester_binary, checker_binary):
     storage_directory = tempfile.TemporaryDirectory()
-    memgraph_args = [memgraph_binary,
-                     "--data-directory", storage_directory.name]
+    memgraph_args = [memgraph_binary, "--data-directory", storage_directory.name]
 
     def execute_admin_queries(queries):
-        return execute_tester(tester_binary, queries, should_fail=False,
-                              check_failure=True, username="admin",
-                              password="admin")
+        return execute_tester(
+            tester_binary,
+            queries,
+            should_fail=False,
+            check_failure=True,
+            username="admin",
+            password="admin",
+        )
 
-    def execute_user_queries(queries, should_fail=False, failure_message="",
-                             check_failure=True):
-        return execute_tester(tester_binary, queries, should_fail,
-                              failure_message, "user", "user", check_failure)
+    def execute_user_queries(queries, should_fail=False, failure_message="", check_failure=True):
+        return execute_tester(
+            tester_binary,
+            queries,
+            should_fail,
+            failure_message,
+            "user",
+            "user",
+            check_failure,
+        )
 
     # Start the memgraph binary
     memgraph = subprocess.Popen(list(map(str, memgraph_args)))
@@ -227,11 +164,13 @@ def execute_test(memgraph_binary, tester_binary, checker_binary):
         assert memgraph.wait() == 0, "Memgraph process didn't exit cleanly!"
 
     # Prepare all users
-    execute_admin_queries([
-        "CREATE USER ADmin IDENTIFIED BY 'admin'",
-        "GRANT ALL PRIVILEGES TO admIN",
-        "CREATE USER usEr IDENTIFIED BY 'user'",
-    ])
+    execute_admin_queries(
+        [
+            "CREATE USER ADmin IDENTIFIED BY 'admin'",
+            "GRANT ALL PRIVILEGES TO admIN",
+            "CREATE USER usEr IDENTIFIED BY 'user'",
+        ]
+    )
 
     # Find all existing permissions
     permissions = set()
@@ -243,12 +182,14 @@ def execute_test(memgraph_binary, tester_binary, checker_binary):
     print("\033[1;36m~~ Starting query test ~~\033[0m")
     for mask in range(0, 2 ** len(permissions)):
         user_perms = get_permissions(permissions, mask)
-        print("\033[1;34m~~ Checking queries with privileges: ",
-              ", ".join(user_perms), " ~~\033[0m")
+        print(
+            "\033[1;34m~~ Checking queries with privileges: ",
+            ", ".join(user_perms),
+            " ~~\033[0m",
+        )
         admin_queries = ["REVOKE ALL PRIVILEGES FROM uSer"]
         if len(user_perms) > 0:
-            admin_queries.append(
-                    "GRANT {} TO User".format(", ".join(user_perms)))
+            admin_queries.append("GRANT {} TO User".format(", ".join(user_perms)))
         execute_admin_queries(admin_queries)
         authorized, unauthorized = [], []
         for query, query_perms in QUERIES:
@@ -256,35 +197,43 @@ def execute_test(memgraph_binary, tester_binary, checker_binary):
                 authorized.append(query)
             else:
                 unauthorized.append(query)
-        execute_user_queries(authorized, check_failure=False,
-                             failure_message=UNAUTHORIZED_ERROR)
-        execute_user_queries(unauthorized, should_fail=True,
-                             failure_message=UNAUTHORIZED_ERROR)
+        execute_user_queries(authorized, check_failure=False, failure_message=UNAUTHORIZED_ERROR)
+        execute_user_queries(unauthorized, should_fail=True, failure_message=UNAUTHORIZED_ERROR)
     print("\033[1;36m~~ Finished query test ~~\033[0m\n")
 
     # Run the user/role permissions test
     print("\033[1;36m~~ Starting permissions test ~~\033[0m")
-    execute_admin_queries([
-        "CREATE ROLE roLe",
-        "REVOKE ALL PRIVILEGES FROM uSeR",
-    ])
+    execute_admin_queries(
+        [
+            "CREATE ROLE roLe",
+            "REVOKE ALL PRIVILEGES FROM uSeR",
+        ]
+    )
     execute_checker(checker_binary, [])
     for user_perm in ["GRANT", "DENY", "REVOKE"]:
         for role_perm in ["GRANT", "DENY", "REVOKE"]:
             for mapped in [True, False]:
-                print("\033[1;34m~~ Checking permissions with user ",
-                      user_perm, ", role ", role_perm,
-                      "user mapped to role:", mapped, " ~~\033[0m")
+                print(
+                    "\033[1;34m~~ Checking permissions with user ",
+                    user_perm,
+                    ", role ",
+                    role_perm,
+                    "user mapped to role:",
+                    mapped,
+                    " ~~\033[0m",
+                )
                 if mapped:
                     execute_admin_queries(["SET ROLE FOR USER TO roLE"])
                 else:
                     execute_admin_queries(["CLEAR ROLE FOR user"])
                 user_prep = "FROM" if user_perm == "REVOKE" else "TO"
                 role_prep = "FROM" if role_perm == "REVOKE" else "TO"
-                execute_admin_queries([
-                    "{} MATCH {} user".format(user_perm, user_prep),
-                    "{} MATCH {} rOLe".format(role_perm, role_prep)
-                ])
+                execute_admin_queries(
+                    [
+                        "{} MATCH {} user".format(user_perm, user_prep),
+                        "{} MATCH {} rOLe".format(role_perm, role_prep),
+                    ]
+                )
                 expected = []
                 perms = [user_perm, role_perm] if mapped else [user_perm]
                 if "DENY" in perms:
@@ -313,10 +262,8 @@ def execute_test(memgraph_binary, tester_binary, checker_binary):
 
 if __name__ == "__main__":
     memgraph_binary = os.path.join(PROJECT_DIR, "build", "memgraph")
-    tester_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                 "integration", "auth", "tester")
-    checker_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                  "integration", "auth", "checker")
+    tester_binary = os.path.join(PROJECT_DIR, "build", "tests", "integration", "auth", "tester")
+    checker_binary = os.path.join(PROJECT_DIR, "build", "tests", "integration", "auth", "checker")
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--memgraph", default=memgraph_binary)

tests/integration/durability/runner.py

@@ -40,7 +40,7 @@ def wait_for_server(port, delay=0.1):
 
 
 def sorted_content(file_path):
-    with open(file_path, 'r') as fin:
+    with open(file_path, "r") as fin:
         return sorted(list(map(lambda x: x.strip(), fin.readlines())))
 
 
@@ -52,32 +52,30 @@ def list_to_string(data):
     return ret
 
 
-def execute_test(
-        memgraph_binary,
-        dump_binary,
-        test_directory,
-        test_type,
-        write_expected):
-    assert test_type in ["SNAPSHOT", "WAL"], \
-        "Test type should be either 'SNAPSHOT' or 'WAL'."
-    print("\033[1;36m~~ Executing test {} ({}) ~~\033[0m"
-          .format(os.path.relpath(test_directory, TESTS_DIR), test_type))
+def execute_test(memgraph_binary, dump_binary, test_directory, test_type, write_expected):
+    assert test_type in [
+        "SNAPSHOT",
+        "WAL",
+    ], "Test type should be either 'SNAPSHOT' or 'WAL'."
+    print("\033[1;36m~~ Executing test {} ({}) ~~\033[0m".format(os.path.relpath(test_directory, TESTS_DIR), test_type))
 
     working_data_directory = tempfile.TemporaryDirectory()
     if test_type == "SNAPSHOT":
         snapshots_dir = os.path.join(working_data_directory.name, "snapshots")
         os.makedirs(snapshots_dir)
-        shutil.copy(os.path.join(test_directory, SNAPSHOT_FILE_NAME),
-                    snapshots_dir)
+        shutil.copy(os.path.join(test_directory, SNAPSHOT_FILE_NAME), snapshots_dir)
     else:
         wal_dir = os.path.join(working_data_directory.name, "wal")
         os.makedirs(wal_dir)
         shutil.copy(os.path.join(test_directory, WAL_FILE_NAME), wal_dir)
 
-    memgraph_args = [memgraph_binary,
-                     "--storage-recover-on-startup",
-                     "--storage-properties-on-edges",
-                     "--data-directory", working_data_directory.name]
+    memgraph_args = [
+        memgraph_binary,
+        "--storage-recover-on-startup",
+        "--storage-properties-on-edges",
+        "--data-directory",
+        working_data_directory.name,
+    ]
 
     # Start the memgraph binary
     memgraph = subprocess.Popen(memgraph_args)
@@ -104,22 +102,21 @@ def execute_test(
     dump_file_name = DUMP_SNAPSHOT_FILE_NAME if test_type == "SNAPSHOT" else DUMP_WAL_FILE_NAME
 
     if write_expected:
-        with open(dump_output_file.name, 'r') as dump:
+        with open(dump_output_file.name, "r") as dump:
             queries_got = dump.readlines()
         # Write dump files
         expected_dump_file = os.path.join(test_directory, dump_file_name)
-        with open(expected_dump_file, 'w') as expected:
+        with open(expected_dump_file, "w") as expected:
             expected.writelines(queries_got)
     else:
         # Compare dump files
         expected_dump_file = os.path.join(test_directory, dump_file_name)
-        assert os.path.exists(expected_dump_file), \
-            "Could not find expected dump path {}".format(expected_dump_file)
+        assert os.path.exists(expected_dump_file), "Could not find expected dump path {}".format(expected_dump_file)
         queries_got = sorted_content(dump_output_file.name)
         queries_expected = sorted_content(expected_dump_file)
-        assert queries_got == queries_expected, "Expected\n{}\nto be equal to\n" \
-            "{}".format(list_to_string(queries_got),
-                        list_to_string(queries_expected))
+        assert queries_got == queries_expected, "Expected\n{}\nto be equal to\n" "{}".format(
+            list_to_string(queries_got), list_to_string(queries_expected)
+        )
 
     print("\033[1;32m~~ Test successful ~~\033[0m\n")
 
@@ -141,15 +138,17 @@ def find_test_directories(directory):
                 continue
             snapshot_file = os.path.join(test_dir_path, SNAPSHOT_FILE_NAME)
             wal_file = os.path.join(test_dir_path, WAL_FILE_NAME)
-            dump_snapshot_file = os.path.join(
-                test_dir_path, DUMP_SNAPSHOT_FILE_NAME)
+            dump_snapshot_file = os.path.join(test_dir_path, DUMP_SNAPSHOT_FILE_NAME)
             dump_wal_file = os.path.join(test_dir_path, DUMP_WAL_FILE_NAME)
-            if (os.path.isfile(snapshot_file) and os.path.isfile(dump_snapshot_file)
-                    and os.path.isfile(wal_file) and os.path.isfile(dump_wal_file)):
+            if (
+                os.path.isfile(snapshot_file)
+                and os.path.isfile(dump_snapshot_file)
+                and os.path.isfile(wal_file)
+                and os.path.isfile(dump_wal_file)
+            ):
                 test_dirs.append(test_dir_path)
             else:
-                raise Exception("Missing data in test directory '{}'"
-                                .format(test_dir_path))
+                raise Exception("Missing data in test directory '{}'".format(test_dir_path))
     return test_dirs
 
 
@@ -161,26 +160,17 @@ if __name__ == "__main__":
     parser.add_argument("--memgraph", default=memgraph_binary)
     parser.add_argument("--dump", default=dump_binary)
     parser.add_argument(
-        '--write-expected',
-        action='store_true',
-        help='Overwrite the expected cypher with results from current run')
+        "--write-expected",
+        action="store_true",
+        help="Overwrite the expected cypher with results from current run",
+    )
     args = parser.parse_args()
 
     test_directories = find_test_directories(TESTS_DIR)
     assert len(test_directories) > 0, "No tests have been found!"
 
     for test_directory in test_directories:
-        execute_test(
-            args.memgraph,
-            args.dump,
-            test_directory,
-            "SNAPSHOT",
-            args.write_expected)
-        execute_test(
-            args.memgraph,
-            args.dump,
-            test_directory,
-            "WAL",
-            args.write_expected)
+        execute_test(args.memgraph, args.dump, test_directory, "SNAPSHOT", args.write_expected)
+        execute_test(args.memgraph, args.dump, test_directory, "WAL", args.write_expected)
 
     sys.exit(0)

tests/integration/ldap/runner.py

@@ -52,8 +52,14 @@ def wait_for_server(port, delay=0.1):
     time.sleep(delay)
 
 
-def execute_tester(binary, queries, username="", password="",
-                   auth_should_fail=False, query_should_fail=False):
+def execute_tester(
+    binary,
+    queries,
+    username="",
+    password="",
+    auth_should_fail=False,
+    query_should_fail=False,
+):
     if password == "":
         password = username
     args = [binary, "--username", username, "--password", password]
@@ -76,18 +82,14 @@ class Memgraph:
     def start(self, **kwargs):
         self.stop()
         self._storage_directory = tempfile.TemporaryDirectory()
-        self._auth_module = os.path.join(self._storage_directory.name,
-                                         "ldap.py")
-        self._auth_config = os.path.join(self._storage_directory.name,
-                                         "ldap.yaml")
-        script_file = os.path.join(PROJECT_DIR, "src", "auth",
-                                   "reference_modules", "ldap.py")
+        self._auth_module = os.path.join(self._storage_directory.name, "ldap.py")
+        self._auth_config = os.path.join(self._storage_directory.name, "ldap.yaml")
+        script_file = os.path.join(PROJECT_DIR, "src", "auth", "reference_modules", "ldap.py")
         virtualenv_bin = os.path.join(SCRIPT_DIR, "ve3", "bin", "python3")
         with open(script_file) as fin:
             data = fin.read()
             data = data.replace("/usr/bin/python3", virtualenv_bin)
-            data = data.replace("/etc/memgraph/auth/ldap.yaml",
-                                self._auth_config)
+            data = data.replace("/etc/memgraph/auth/ldap.yaml", self._auth_config)
             with open(self._auth_module, "w") as fout:
                 fout.write(data)
         os.chmod(self._auth_module, stat.S_IRWXU | stat.S_IRWXG)
@@ -106,10 +108,13 @@ class Memgraph:
         }
         with open(self._auth_config, "w") as f:
             f.write(CONFIG_TEMPLATE.format(**config))
-        args = [self._binary,
-                "--data-directory", self._storage_directory.name,
-                "--auth-module-executable",
-                kwargs.pop("module_executable", self._auth_module)]
+        args = [
+            self._binary,
+            "--data-directory",
+            self._storage_directory.name,
+            "--auth-module-executable",
+            kwargs.pop("module_executable", self._auth_module),
+        ]
         for key, value in kwargs.items():
             ldap_key = "--auth-module-" + key.replace("_", "-")
             if isinstance(value, bool):
@@ -119,8 +124,7 @@ class Memgraph:
                 args.append(value)
         self._process = subprocess.Popen(args)
         time.sleep(0.1)
-        assert self._process.poll() is None, "Memgraph process died " \
-            "prematurely!"
+        assert self._process.poll() is None, "Memgraph process died " "prematurely!"
         wait_for_server(7687)
 
     def stop(self, check=True):
@@ -137,8 +141,7 @@ class Memgraph:
 def initialize_test(memgraph, tester_binary, **kwargs):
     memgraph.start(module_executable="")
 
-    execute_tester(tester_binary,
-                   ["CREATE USER root", "GRANT ALL PRIVILEGES TO root"])
+    execute_tester(tester_binary, ["CREATE USER root", "GRANT ALL PRIVILEGES TO root"])
     check_login = kwargs.pop("check_login", True)
     memgraph.restart(**kwargs)
     if check_login:
@@ -170,18 +173,15 @@ def test_role_mapping(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary)
 
     execute_tester(tester_binary, [], "alice")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root")
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
 
     execute_tester(tester_binary, [], "bob")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "bob",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "bob", query_should_fail=True)
 
     execute_tester(tester_binary, [], "carol")
-    execute_tester(tester_binary, ["CREATE (n) RETURN n"], "carol",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["CREATE (n) RETURN n"], "carol", query_should_fail=True)
     execute_tester(tester_binary, ["GRANT CREATE TO admin"], "root")
     execute_tester(tester_binary, ["CREATE (n) RETURN n"], "carol")
     execute_tester(tester_binary, ["CREATE (n) RETURN n"], "dave")
@@ -192,15 +192,13 @@ def test_role_mapping(memgraph, tester_binary):
 def test_role_removal(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary)
     execute_tester(tester_binary, [], "alice")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root")
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.restart(manage_roles=False)
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     execute_tester(tester_binary, ["CLEAR ROLE FOR alice"], "root")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     memgraph.stop()
 
 
@@ -229,28 +227,22 @@ def test_user_is_role(memgraph, tester_binary):
 
 def test_user_permissions_persistancy(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary)
-    execute_tester(tester_binary,
-                   ["CREATE USER alice", "GRANT MATCH TO alice"], "root")
+    execute_tester(tester_binary, ["CREATE USER alice", "GRANT MATCH TO alice"], "root")
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
 
 
 def test_role_permissions_persistancy(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary)
-    execute_tester(tester_binary,
-                   ["CREATE ROLE moderator", "GRANT MATCH TO moderator"],
-                   "root")
+    execute_tester(tester_binary, ["CREATE ROLE moderator", "GRANT MATCH TO moderator"], "root")
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
 
 
 def test_only_authentication(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary, manage_roles=False)
-    execute_tester(tester_binary,
-                   ["CREATE ROLE moderator", "GRANT MATCH TO moderator"],
-                   "root")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["CREATE ROLE moderator", "GRANT MATCH TO moderator"], "root")
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     memgraph.stop()
 
 
@@ -267,22 +259,16 @@ def test_wrong_suffix(memgraph, tester_binary):
 
 
 def test_suffix_with_spaces(memgraph, tester_binary):
-    initialize_test(memgraph, tester_binary,
-                    suffix=",    ou= people,  dc = memgraph, dc =   com")
-    execute_tester(tester_binary,
-                   ["CREATE USER alice", "GRANT MATCH TO alice"], "root")
+    initialize_test(memgraph, tester_binary, suffix=",    ou= people,  dc = memgraph, dc =   com")
+    execute_tester(tester_binary, ["CREATE USER alice", "GRANT MATCH TO alice"], "root")
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
 
 
 def test_role_mapping_wrong_root_dn(memgraph, tester_binary):
-    initialize_test(memgraph, tester_binary,
-                    root_dn="ou=invalid,dc=memgraph,dc=com")
-    execute_tester(tester_binary,
-                   ["CREATE ROLE moderator", "GRANT MATCH TO moderator"],
-                   "root")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    initialize_test(memgraph, tester_binary, root_dn="ou=invalid,dc=memgraph,dc=com")
+    execute_tester(tester_binary, ["CREATE ROLE moderator", "GRANT MATCH TO moderator"], "root")
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     memgraph.restart()
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
@@ -290,11 +276,8 @@ def test_role_mapping_wrong_root_dn(memgraph, tester_binary):
 
 def test_role_mapping_wrong_root_objectclass(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary, root_objectclass="person")
-    execute_tester(tester_binary,
-                   ["CREATE ROLE moderator", "GRANT MATCH TO moderator"],
-                   "root")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["CREATE ROLE moderator", "GRANT MATCH TO moderator"], "root")
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     memgraph.restart()
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
@@ -302,11 +285,8 @@ def test_role_mapping_wrong_root_objectclass(memgraph, tester_binary):
 
 def test_role_mapping_wrong_user_attribute(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary, user_attribute="cn")
-    execute_tester(tester_binary,
-                   ["CREATE ROLE moderator", "GRANT MATCH TO moderator"],
-                   "root")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["CREATE ROLE moderator", "GRANT MATCH TO moderator"], "root")
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice", query_should_fail=True)
     memgraph.restart()
     execute_tester(tester_binary, ["MATCH (n) RETURN n"], "alice")
     memgraph.stop()
@@ -314,8 +294,7 @@ def test_role_mapping_wrong_user_attribute(memgraph, tester_binary):
 
 def test_wrong_password(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary)
-    execute_tester(tester_binary, [], "root", password="sudo",
-                   auth_should_fail=True)
+    execute_tester(tester_binary, [], "root", password="sudo", auth_should_fail=True)
     execute_tester(tester_binary, ["SHOW USERS"], "root", password="root")
     memgraph.stop()
 
@@ -326,12 +305,10 @@ def test_password_persistancy(memgraph, tester_binary):
     execute_tester(tester_binary, ["SHOW USERS"], "root", password="sudo")
     execute_tester(tester_binary, ["SHOW USERS"], "root", password="root")
     memgraph.restart()
-    execute_tester(tester_binary, [], "root", password="sudo",
-                   auth_should_fail=True)
+    execute_tester(tester_binary, [], "root", password="sudo", auth_should_fail=True)
     execute_tester(tester_binary, ["SHOW USERS"], "root", password="root")
     memgraph.restart(module_executable="")
-    execute_tester(tester_binary, [], "root", password="sudo",
-                   auth_should_fail=True)
+    execute_tester(tester_binary, [], "root", password="sudo", auth_should_fail=True)
     execute_tester(tester_binary, ["SHOW USERS"], "root", password="root")
     memgraph.stop()
 
@@ -339,33 +316,25 @@ def test_password_persistancy(memgraph, tester_binary):
 def test_user_multiple_roles(memgraph, tester_binary):
     initialize_test(memgraph, tester_binary, check_login=False)
     memgraph.restart()
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve",
-                   query_should_fail=True)
-    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve", query_should_fail=True)
+    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root", query_should_fail=True)
     memgraph.restart(manage_roles=False)
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve",
-                   query_should_fail=True)
-    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve", query_should_fail=True)
+    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root", query_should_fail=True)
     memgraph.restart(manage_roles=False, root_dn="")
-    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve",
-                   query_should_fail=True)
-    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root",
-                   query_should_fail=True)
+    execute_tester(tester_binary, ["MATCH (n) RETURN n"], "eve", query_should_fail=True)
+    execute_tester(tester_binary, ["GRANT MATCH TO moderator"], "root", query_should_fail=True)
     memgraph.stop()
 
 
 def test_starttls_failure(memgraph, tester_binary):
-    initialize_test(memgraph, tester_binary, encryption="starttls",
-                    check_login=False)
+    initialize_test(memgraph, tester_binary, encryption="starttls", check_login=False)
     execute_tester(tester_binary, [], "root", auth_should_fail=True)
     memgraph.stop()
 
 
 def test_ssl_failure(memgraph, tester_binary):
-    initialize_test(memgraph, tester_binary, encryption="ssl",
-                    check_login=False)
+    initialize_test(memgraph, tester_binary, encryption="ssl", check_login=False)
     execute_tester(tester_binary, [], "root", auth_should_fail=True)
     memgraph.stop()
 
@@ -375,22 +344,25 @@ def test_ssl_failure(memgraph, tester_binary):
 
 if __name__ == "__main__":
     memgraph_binary = os.path.join(PROJECT_DIR, "build", "memgraph")
-    tester_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                 "integration", "ldap", "tester")
+    tester_binary = os.path.join(PROJECT_DIR, "build", "tests", "integration", "ldap", "tester")
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--memgraph", default=memgraph_binary)
     parser.add_argument("--tester", default=tester_binary)
-    parser.add_argument("--openldap-dir",
-                        default=os.path.join(SCRIPT_DIR, "openldap-2.4.47"))
+    parser.add_argument("--openldap-dir", default=os.path.join(SCRIPT_DIR, "openldap-2.4.47"))
     args = parser.parse_args()
 
     # Setup Memgraph handler
     memgraph = Memgraph(args.memgraph)
 
     # Start the slapd binary
-    slapd_args = [os.path.join(args.openldap_dir, "exe", "libexec", "slapd"),
-                  "-h", "ldap://127.0.0.1:1389/", "-d", "0"]
+    slapd_args = [
+        os.path.join(args.openldap_dir, "exe", "libexec", "slapd"),
+        "-h",
+        "ldap://127.0.0.1:1389/",
+        "-d",
+        "0",
+    ]
     slapd = subprocess.Popen(slapd_args)
     time.sleep(0.1)
     assert slapd.poll() is None, "slapd process died prematurely!"
@@ -409,8 +381,7 @@ if __name__ == "__main__":
         if slapd_stat != 0:
             print("slapd process didn't exit cleanly!")
 
-        assert mg_stat == 0 and slapd_stat == 0, "Some of the processes " \
-            "(memgraph, slapd) crashed!"
+        assert mg_stat == 0 and slapd_stat == 0, "Some of the processes " "(memgraph, slapd) crashed!"
 
     # Execute tests
     names = sorted(globals().keys())

tests/integration/mg_import_csv/runner.py

@@ -46,17 +46,18 @@ def list_to_string(data):
 
 
 def verify_lifetime(memgraph_binary, mg_import_csv_binary):
-    print("\033[1;36m~~ Verifying that mg_import_csv can't be started while "
-          "memgraph is running ~~\033[0m")
+    print("\033[1;36m~~ Verifying that mg_import_csv can't be started while " "memgraph is running ~~\033[0m")
     storage_directory = tempfile.TemporaryDirectory()
 
     # Generate common args
-    common_args = ["--data-directory", storage_directory.name,
-                   "--storage-properties-on-edges=false"]
+    common_args = [
+        "--data-directory",
+        storage_directory.name,
+        "--storage-properties-on-edges=false",
+    ]
 
     # Start the memgraph binary
-    memgraph_args = [memgraph_binary, "--storage-recover-on-startup"] + \
-        common_args
+    memgraph_args = [memgraph_binary, "--storage-recover-on-startup"] + common_args
     memgraph = subprocess.Popen(list(map(str, memgraph_args)))
     time.sleep(0.1)
     assert memgraph.poll() is None, "Memgraph process died prematurely!"
@@ -70,14 +71,12 @@ def verify_lifetime(memgraph_binary, mg_import_csv_binary):
         assert memgraph.wait() == 0, "Memgraph process didn't exit cleanly!"
 
     # Execute mg_import_csv.
-    mg_import_csv_args = [mg_import_csv_binary, "--nodes", "/dev/null"] + \
-        common_args
+    mg_import_csv_args = [mg_import_csv_binary, "--nodes", "/dev/null"] + common_args
     ret = subprocess.run(mg_import_csv_args)
 
     # Check the return code
     if ret.returncode == 0:
-        raise Exception(
-            "The importer was able to run while memgraph was running!")
+        raise Exception("The importer was able to run while memgraph was running!")
 
     # Shutdown the memgraph binary
     memgraph.terminate()
@@ -86,27 +85,34 @@ def verify_lifetime(memgraph_binary, mg_import_csv_binary):
     print("\033[1;32m~~ Test successful ~~\033[0m\n")
 
 
-def execute_test(name, test_path, test_config, memgraph_binary,
-                 mg_import_csv_binary, tester_binary, write_expected):
+def execute_test(
+    name,
+    test_path,
+    test_config,
+    memgraph_binary,
+    mg_import_csv_binary,
+    tester_binary,
+    write_expected,
+):
     print("\033[1;36m~~ Executing test", name, "~~\033[0m")
     storage_directory = tempfile.TemporaryDirectory()
 
     # Verify test configuration
-    if ("import_should_fail" not in test_config and
-        "expected" not in test_config) or \
-            ("import_should_fail" in test_config and
-             "expected" in test_config):
-        raise Exception("The test should specify either 'import_should_fail' "
-                        "or 'expected'!")
+    if ("import_should_fail" not in test_config and "expected" not in test_config) or (
+        "import_should_fail" in test_config and "expected" in test_config
+    ):
+        raise Exception("The test should specify either 'import_should_fail' " "or 'expected'!")
 
     expected_path = test_config.pop("expected", "")
     import_should_fail = test_config.pop("import_should_fail", False)
 
     # Generate common args
     properties_on_edges = bool(test_config.pop("properties_on_edges", False))
-    common_args = ["--data-directory", storage_directory.name,
-                   "--storage-properties-on-edges=" +
-                   str(properties_on_edges).lower()]
+    common_args = [
+        "--data-directory",
+        storage_directory.name,
+        "--storage-properties-on-edges=" + str(properties_on_edges).lower(),
+    ]
 
     # Generate mg_import_csv args using flags specified in the test
     mg_import_csv_args = [mg_import_csv_binary] + common_args
@@ -125,19 +131,16 @@ def execute_test(name, test_path, test_config, memgraph_binary,
 
     if import_should_fail:
         if ret.returncode == 0:
-            raise Exception("The import should have failed, but it "
-                            "succeeded instead!")
+            raise Exception("The import should have failed, but it " "succeeded instead!")
         else:
             print("\033[1;32m~~ Test successful ~~\033[0m\n")
             return
     else:
         if ret.returncode != 0:
-            raise Exception("The import should have succeeded, but it "
-                            "failed instead!")
+            raise Exception("The import should have succeeded, but it " "failed instead!")
 
     # Start the memgraph binary
-    memgraph_args = [memgraph_binary, "--storage-recover-on-startup"] + \
-        common_args
+    memgraph_args = [memgraph_binary, "--storage-recover-on-startup"] + common_args
     memgraph = subprocess.Popen(list(map(str, memgraph_args)))
     time.sleep(0.1)
     assert memgraph.poll() is None, "Memgraph process died prematurely!"
@@ -151,17 +154,17 @@ def execute_test(name, test_path, test_config, memgraph_binary,
         assert memgraph.wait() == 0, "Memgraph process didn't exit cleanly!"
 
     # Get the contents of the database
-    queries_got = extract_rows(subprocess.run(
-        [tester_binary], stdout=subprocess.PIPE,
-        check=True).stdout.decode("utf-8"))
+    queries_got = extract_rows(
+        subprocess.run([tester_binary], stdout=subprocess.PIPE, check=True).stdout.decode("utf-8")
+    )
 
     # Shutdown the memgraph binary
     memgraph.terminate()
     assert memgraph.wait() == 0, "Memgraph process didn't exit cleanly!"
 
     if write_expected:
-        with open(os.path.join(test_path, expected_path), 'w') as expected:
-            expected.write('\n'.join(queries_got))
+        with open(os.path.join(test_path, expected_path), "w") as expected:
+            expected.write("\n".join(queries_got))
 
     else:
         if expected_path:
@@ -173,18 +176,16 @@ def execute_test(name, test_path, test_config, memgraph_binary,
         # Verify the queries
         queries_expected.sort()
         queries_got.sort()
-        assert queries_got == queries_expected, "Expected\n{}\nto be equal to\n" \
-            "{}".format(list_to_string(queries_got),
-                        list_to_string(queries_expected))
+        assert queries_got == queries_expected, "Expected\n{}\nto be equal to\n" "{}".format(
+            list_to_string(queries_got), list_to_string(queries_expected)
+        )
     print("\033[1;32m~~ Test successful ~~\033[0m\n")
 
 
 if __name__ == "__main__":
     memgraph_binary = os.path.join(BUILD_DIR, "memgraph")
-    mg_import_csv_binary = os.path.join(
-        BUILD_DIR, "src", "mg_import_csv")
-    tester_binary = os.path.join(
-        BUILD_DIR, "tests", "integration", "mg_import_csv", "tester")
+    mg_import_csv_binary = os.path.join(BUILD_DIR, "src", "mg_import_csv")
+    tester_binary = os.path.join(BUILD_DIR, "tests", "integration", "mg_import_csv", "tester")
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--memgraph", default=memgraph_binary)
@@ -193,7 +194,8 @@ if __name__ == "__main__":
     parser.add_argument(
         "--write-expected",
         action="store_true",
-        help="Overwrite the expected values with the results of the current run")
+        help="Overwrite the expected values with the results of the current run",
+    )
     args = parser.parse_args()
 
     # First test whether the CSV importer can be started while the main
@@ -211,7 +213,14 @@ if __name__ == "__main__":
             testcases = yaml.safe_load(f)
         for test_config in testcases:
             test_name = name + "/" + test_config.pop("name")
-            execute_test(test_name, test_path, test_config, args.memgraph,
-                         args.mg_import_csv, args.tester, args.write_expected)
+            execute_test(
+                test_name,
+                test_path,
+                test_config,
+                args.memgraph,
+                args.mg_import_csv,
+                args.tester,
+                args.write_expected,
+            )
 
     sys.exit(0)

tests/integration/telemetry/runner.py

@@ -36,8 +36,7 @@ def execute_test(**kwargs):
     timeout = duration * 2 if "hang" not in kwargs else duration * 2 + 60
     success = False
 
-    server_args = [server_binary, "--interval", interval,
-                   "--duration", duration]
+    server_args = [server_binary, "--interval", interval, "--duration", duration]
     for flag, value in kwargs.items():
         flag = "--" + flag.replace("_", "-")
         # We handle boolean flags here. The type of value must be `bool`, and
@@ -48,9 +47,15 @@ def execute_test(**kwargs):
         else:
             server_args.extend([flag, value])
 
-    client_args = [client_binary, "--interval", interval,
-                   "--duration", duration,
-                   "--storage-directory", storage_directory]
+    client_args = [
+        client_binary,
+        "--interval",
+        interval,
+        "--duration",
+        duration,
+        "--storage-directory",
+        storage_directory,
+    ]
     if endpoint:
         client_args.extend(["--endpoint", endpoint])
 
@@ -61,8 +66,7 @@ def execute_test(**kwargs):
         assert server.poll() is None, "Server process died prematurely!"
 
     try:
-        subprocess.run(list(map(str, client_args)), timeout=timeout,
-                       check=True)
+        subprocess.run(list(map(str, client_args)), timeout=timeout, check=True)
     finally:
         if server is None:
             success = True
@@ -88,16 +92,14 @@ TESTS = [
     {"endpoint": "http://127.0.0.1:9000/nonexistant/", "no_check": True},
     {"start_server": False},
     {"startups": 4, "no_check_duration": True},  # the last 3 tests failed
-                                                 # to send any data + this test
-    {"add_garbage": True}
+    # to send any data + this test
+    {"add_garbage": True},
 ]
 
 if __name__ == "__main__":
     server_binary = os.path.join(SCRIPT_DIR, "server.py")
-    client_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                 "integration", "telemetry", "client")
-    kvstore_console_binary = os.path.join(PROJECT_DIR, "build", "tests",
-                                          "manual", "kvstore_console")
+    client_binary = os.path.join(PROJECT_DIR, "build", "tests", "integration", "telemetry", "client")
+    kvstore_console_binary = os.path.join(PROJECT_DIR, "build", "tests", "manual", "kvstore_console")
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--client", default=client_binary)
@@ -108,19 +110,23 @@ if __name__ == "__main__":
     storage = tempfile.TemporaryDirectory()
 
     for test in TESTS:
-        print("\033[1;36m~~ Executing test with arguments:",
-              json.dumps(test, sort_keys=True), "~~\033[0m")
+        print(
+            "\033[1;36m~~ Executing test with arguments:",
+            json.dumps(test, sort_keys=True),
+            "~~\033[0m",
+        )
 
         if test.pop("add_garbage", False):
-            proc = subprocess.Popen([args.kvstore_console, "--path",
-                                     storage.name], stdin=subprocess.PIPE,
-                                    stdout=subprocess.DEVNULL)
+            proc = subprocess.Popen(
+                [args.kvstore_console, "--path", storage.name],
+                stdin=subprocess.PIPE,
+                stdout=subprocess.DEVNULL,
+            )
             proc.communicate("put garbage garbage".encode("utf-8"))
             assert proc.wait() == 0
 
         try:
-            success = execute_test(client=args.client, server=args.server,
-                                   storage=storage.name, **test)
+            success = execute_test(client=args.client, server=args.server, storage=storage.name, **test)
         except Exception as e:
             print("\033[1;33m", e, "\033[0m", sep="")
             success = False

tests/integration/telemetry/server.py

@@ -46,7 +46,7 @@ def build_handler(storage, args):
             assert self.headers["accept"] == "application/json"
             assert self.headers["content-type"] == "application/json"
 
-            content_len = int(self.headers.get('content-length', 0))
+            content_len = int(self.headers.get("content-length", 0))
             data = json.loads(self.rfile.read(content_len).decode("utf-8"))
 
             if self.path not in [args.path, args.redirect_path]:
@@ -195,4 +195,4 @@ if __name__ == "__main__":
         verify_storage(startup, args)
 
     # machine id has to be same for every run on the same machine
-    assert len(set(map(lambda x: x['machine_id'], itertools.chain(*startups)))) == 1
+    assert len(set(map(lambda x: x["machine_id"], itertools.chain(*startups)))) == 1

tests/macro_benchmark/clients.py

@@ -34,7 +34,8 @@ class QueryClient:
         self.default_num_workers = default_num_workers
 
     def __call__(self, queries, database, num_workers=None):
-        if num_workers is None: num_workers = self.default_num_workers
+        if num_workers is None:
+            num_workers = self.default_num_workers
         self.log.debug("execute('%s')", str(queries))
 
         client_path = "tests/macro_benchmark/query_client"
@@ -53,29 +54,36 @@ class QueryClient:
         output_fd, output = tempfile.mkstemp()
         os.close(output_fd)
 
-        client_args = ["--port", database.args.port,
-                       "--num-workers", str(num_workers),
-                       "--output", output]
+        client_args = [
+            "--port",
+            database.args.port,
+            "--num-workers",
+            str(num_workers),
+            "--output",
+            output,
+        ]
 
         cpu_time_start = database.database_bin.get_usage()["cpu"]
         # TODO make the timeout configurable per query or something
-        return_code = self.client.run_and_wait(
-            client, client_args, timeout=600, stdin=queries_path)
+        return_code = self.client.run_and_wait(client, client_args, timeout=600, stdin=queries_path)
         usage = database.database_bin.get_usage()
         cpu_time_end = usage["cpu"]
         os.remove(queries_path)
         if return_code != 0:
             with open(self.client.get_stderr()) as f:
                 stderr = f.read()
-            self.log.error("Error while executing queries '%s'. "
-                           "Failed with return_code %d and stderr:\n%s",
-                           str(queries), return_code, stderr)
+            self.log.error(
+                "Error while executing queries '%s'. " "Failed with return_code %d and stderr:\n%s",
+                str(queries),
+                return_code,
+                stderr,
+            )
             raise Exception("BoltClient execution failed")
 
-        data = {"groups" : []}
+        data = {"groups": []}
         with open(output) as f:
             for line in f:
-               data["groups"].append(json.loads(line))
+                data["groups"].append(json.loads(line))
         data[CPU_TIME] = cpu_time_end - cpu_time_start
         data[MAX_MEMORY] = usage["max_memory"]
 
@@ -94,7 +102,8 @@ class LongRunningClient:
     # TODO: This is quite similar to __call__ method of QueryClient. Remove
     # duplication.
     def __call__(self, config, database, duration, client, num_workers=None):
-        if num_workers is None: num_workers = self.default_num_workers
+        if num_workers is None:
+            num_workers = self.default_num_workers
         self.log.debug("execute('%s')", config)
 
         client_path = "tests/macro_benchmark/{}".format(client)
@@ -113,32 +122,41 @@ class LongRunningClient:
         output_fd, output = tempfile.mkstemp()
         os.close(output_fd)
 
-        client_args = ["--port", database.args.port,
-                       "--num-workers", str(num_workers),
-                       "--output", output,
-                       "--duration", str(duration),
-                       "--db", database.name,
-                       "--scenario", self.workload]
+        client_args = [
+            "--port",
+            database.args.port,
+            "--num-workers",
+            str(num_workers),
+            "--output",
+            output,
+            "--duration",
+            str(duration),
+            "--db",
+            database.name,
+            "--scenario",
+            self.workload,
+        ]
 
-        return_code = self.client.run_and_wait(
-            client, client_args, timeout=600, stdin=config_path)
+        return_code = self.client.run_and_wait(client, client_args, timeout=600, stdin=config_path)
         os.remove(config_path)
         if return_code != 0:
             with open(self.client.get_stderr()) as f:
                 stderr = f.read()
-            self.log.error("Error while executing config '%s'. "
-                           "Failed with return_code %d and stderr:\n%s",
-                           str(config), return_code, stderr)
+            self.log.error(
+                "Error while executing config '%s'. " "Failed with return_code %d and stderr:\n%s",
+                str(config),
+                return_code,
+                stderr,
+            )
             raise Exception("BoltClient execution failed")
 
-
         # TODO: We shouldn't wait for process to finish to start reading output.
         # We should implement periodic reading of data and stream data when it
         # becomes available.
         data = []
         with open(output) as f:
             for line in f:
-               data.append(json.loads(line))
+                data.append(json.loads(line))
 
         os.remove(output)
         return data

tests/macro_benchmark/common.py

@@ -14,9 +14,11 @@ from argparse import ArgumentParser
 
 try:
     import jail
+
     APOLLO = True
 except:
     import jail_faker as jail
+
     APOLLO = False
 
 
@@ -45,13 +47,15 @@ def get_absolute_path(path, base=""):
 def set_cpus(flag_name, process, args):
     argp = ArgumentParser()
     # named, optional arguments
-    argp.add_argument("--" + flag_name, nargs="+", type=int, help="cpus that "
-                      "will be used by process. Obligatory on Apollo, ignored "
-                      "otherwise.")
+    argp.add_argument(
+        "--" + flag_name,
+        nargs="+",
+        type=int,
+        help="cpus that " "will be used by process. Obligatory on Apollo, ignored " "otherwise.",
+    )
     args, _ = argp.parse_known_args(args)
     attr_flag_name = flag_name.replace("-", "_")
     cpus = getattr(args, attr_flag_name)
-    assert not APOLLO or cpus, \
-            "flag --{} is obligatory on Apollo".format(flag_name)
+    assert not APOLLO or cpus, "flag --{} is obligatory on Apollo".format(flag_name)
     if cpus:
-        process.set_cpus(cpus, hyper = False)
+        process.set_cpus(cpus, hyper=False)

tests/macro_benchmark/databases.py

@@ -36,13 +36,12 @@ class Memgraph:
     """
     Knows how to start and stop memgraph.
     """
+
     def __init__(self, args, num_workers):
         self.log = logging.getLogger("MemgraphRunner")
         argp = ArgumentParser("MemgraphArgumentParser")
-        argp.add_argument("--runner-bin",
-                          default=get_absolute_path("memgraph", "build"))
-        argp.add_argument("--port", default="7687",
-                          help="Database and client port")
+        argp.add_argument("--runner-bin", default=get_absolute_path("memgraph", "build"))
+        argp.add_argument("--port", default="7687", help="Database and client port")
         argp.add_argument("--data-directory", default=None)
         argp.add_argument("--storage-snapshot-on-exit", action="store_true")
         argp.add_argument("--storage-recover-on-startup", action="store_true")
@@ -55,8 +54,12 @@ class Memgraph:
 
     def start(self):
         self.log.info("start")
-        database_args = ["--bolt-port", self.args.port,
-                         "--query-execution-timeout-sec", "0"]
+        database_args = [
+            "--bolt-port",
+            self.args.port,
+            "--query-execution-timeout-sec",
+            "0",
+        ]
         if self.num_workers:
             database_args += ["--bolt-num-workers", str(self.num_workers)]
         if self.args.data_directory:
@@ -82,15 +85,13 @@ class Neo:
     """
     Knows how to start and stop neo4j.
     """
+
     def __init__(self, args, config):
         self.log = logging.getLogger("NeoRunner")
         argp = ArgumentParser("NeoArgumentParser")
-        argp.add_argument("--runner-bin", default=get_absolute_path(
-                          "neo4j/bin/neo4j", "libs"))
-        argp.add_argument("--port", default="7687",
-                          help="Database and client port")
-        argp.add_argument("--http-port", default="7474",
-                          help="Database and client port")
+        argp.add_argument("--runner-bin", default=get_absolute_path("neo4j/bin/neo4j", "libs"))
+        argp.add_argument("--port", default="7687", help="Database and client port")
+        argp.add_argument("--http-port", default="7474", help="Database and client port")
         self.log.info("Initializing Runner with arguments %r", args)
         self.args, _ = argp.parse_known_args(args)
         self.config = config
@@ -105,24 +106,23 @@ class Neo:
         self.neo4j_home_path = tempfile.mkdtemp(dir="/dev/shm")
 
         try:
-            os.symlink(os.path.join(get_absolute_path("neo4j", "libs"), "lib"),
-                       os.path.join(self.neo4j_home_path, "lib"))
+            os.symlink(
+                os.path.join(get_absolute_path("neo4j", "libs"), "lib"),
+                os.path.join(self.neo4j_home_path, "lib"),
+            )
             neo4j_conf_dir = os.path.join(self.neo4j_home_path, "conf")
             neo4j_conf_file = os.path.join(neo4j_conf_dir, "neo4j.conf")
             os.mkdir(neo4j_conf_dir)
             shutil.copyfile(self.config, neo4j_conf_file)
             with open(neo4j_conf_file, "a") as f:
-                f.write("\ndbms.connector.bolt.listen_address=:" +
-                        self.args.port + "\n")
-                f.write("\ndbms.connector.http.listen_address=:" +
-                        self.args.http_port + "\n")
+                f.write("\ndbms.connector.bolt.listen_address=:" + self.args.port + "\n")
+                f.write("\ndbms.connector.http.listen_address=:" + self.args.http_port + "\n")
 
             # environment
             cwd = os.path.dirname(self.args.runner_bin)
             env = {"NEO4J_HOME": self.neo4j_home_path}
 
-            self.database_bin.run(self.args.runner_bin, args=["console"],
-                                  env=env, timeout=600, cwd=cwd)
+            self.database_bin.run(self.args.runner_bin, args=["console"], env=env, timeout=600, cwd=cwd)
         except:
             shutil.rmtree(self.neo4j_home_path)
             raise Exception("Couldn't run Neo4j!")

tests/macro_benchmark/groups/1000_create/vertex_big.run.py

@@ -9,4 +9,7 @@
 # by the Apache License, Version 2.0, included in the file
 # licenses/APL.txt.
 
-print("""CREATE (:L1:L2:L3:L4:L5:L6:L7 {p1: true, p2: 42, p3: "Here is some text that is not extremely short", p4:"Short text", p5: 234.434, p6: 11.11, p7: false});""" * 1000)
+print(
+    """CREATE (:L1:L2:L3:L4:L5:L6:L7 {p1: true, p2: 42, p3: "Here is some text that is not extremely short", p4:"Short text", p5: 234.434, p6: 11.11, p7: false});"""
+    * 1000
+)

tests/macro_benchmark/groups/aggregation/setup.py

@@ -15,6 +15,5 @@ VERTEX_COUNT = 100000
 for i in range(VERTEX_COUNT):
     print("CREATE (n%d {x: %d})" % (i, i))
     # batch CREATEs because we can't execute all at once
-    if (i != 0 and i % BATCH_SIZE == 0) or \
-            (i + 1 == VERTEX_COUNT):
+    if (i != 0 and i % BATCH_SIZE == 0) or (i + 1 == VERTEX_COUNT):
         print(";")

tests/macro_benchmark/groups/aggregation_parallel/setup.py

@@ -15,6 +15,5 @@ VERTEX_COUNT = 1000000
 for i in range(VERTEX_COUNT):
     print("CREATE (n%d {x: %d})" % (i, i))
     # batch CREATEs because we can't execute all at once
-    if (i != 0 and i % BATCH_SIZE == 0) or \
-            (i + 1 == VERTEX_COUNT):
+    if (i != 0 and i % BATCH_SIZE == 0) or (i + 1 == VERTEX_COUNT):
         print(";")

tests/macro_benchmark/groups/bfs_parallel/bfs.run.py

@@ -19,8 +19,9 @@ random.seed(1)
 for i in range(common.BFS_ITERS):
     a = int(random.random() * common.VERTEX_COUNT)
     b = int(random.random() * common.VERTEX_COUNT)
-    print("MATCH (from: Node {id: %d}) WITH from "
-          "MATCH (to: Node {id: %d}) WITH to     "
-          "MATCH path = (from)-[*bfs..%d (e, n | true)]->(to) WITH path "
-          "LIMIT 10 RETURN 0;"
-          % (a, b, common.PATH_LENGTH))
+    print(
+        "MATCH (from: Node {id: %d}) WITH from "
+        "MATCH (to: Node {id: %d}) WITH to     "
+        "MATCH path = (from)-[*bfs..%d (e, n | true)]->(to) WITH path "
+        "LIMIT 10 RETURN 0;" % (a, b, common.PATH_LENGTH)
+    )

tests/macro_benchmark/groups/bfs_parallel/common.py

@@ -13,4 +13,3 @@ VERTEX_COUNT = 1000
 SPARSE_FACTOR = 10
 BFS_ITERS = 50
 PATH_LENGTH = 5000
-

tests/macro_benchmark/groups/bfs_parallel/setup.py

@@ -32,4 +32,3 @@ for i in range(common.VERTEX_COUNT * common.VERTEX_COUNT // common.SPARSE_FACTOR
     a = int(random.random() * common.VERTEX_COUNT)
     b = int(random.random() * common.VERTEX_COUNT)
     print("MATCH (a: Node {id: %d}), (b: Node {id: %d}) CREATE (a)-[:Friend]->(b);" % (a, b))
-

tests/macro_benchmark/groups/card_fraud/setup.py

@@ -11,13 +11,10 @@
 
 import random
 
+
 def init_data(card_count, pos_count):
-    print("UNWIND range(0, {} - 1) AS id "
-        "CREATE (:Card {{id: id, compromised: false}});".format(
-            card_count))
-    print("UNWIND range(0, {} - 1) AS id "
-        "CREATE (:Pos {{id: id, compromised: false}});".format(
-            pos_count))
+    print("UNWIND range(0, {} - 1) AS id " "CREATE (:Card {{id: id, compromised: false}});".format(card_count))
+    print("UNWIND range(0, {} - 1) AS id " "CREATE (:Pos {{id: id, compromised: false}});".format(pos_count))
 
 
 def compromise_pos_device(pos_id):
@@ -34,20 +31,24 @@ def pump_transactions(card_count, pos_count, tx_count, report_pct):
     # Card of the transaction gets compromised too. If the card
     # is compromised, there is a 0.1 chance the transaction is
     # fraudulent and detected (regardless of POS).
-    q = ("MATCH (c:Card {{id: {}}}), (p:Pos {{id: {}}}) "
-         "CREATE (t:Transaction "
-         "{{id: {}, fraud_reported: c.compromised AND (rand() < %f)}}) "
-         "CREATE (c)<-[:Using]-(t)-[:At]->(p) "
-         "SET c.compromised = p.compromised;" % report_pct)
+    q = (
+        "MATCH (c:Card {{id: {}}}), (p:Pos {{id: {}}}) "
+        "CREATE (t:Transaction "
+        "{{id: {}, fraud_reported: c.compromised AND (rand() < %f)}}) "
+        "CREATE (c)<-[:Using]-(t)-[:At]->(p) "
+        "SET c.compromised = p.compromised;" % report_pct
+    )
+
+    def rint(max):
+        return random.randint(0, max - 1)  # NOQA
 
-    def rint(max): return random.randint(0, max - 1)  # NOQA
     for i in range(tx_count):
         print(q.format(rint(card_count), rint(pos_count), i))
 
 
 POS_COUNT = 1000
 CARD_COUNT = 10000
-FRAUD_POS_COUNT = 20 
+FRAUD_POS_COUNT = 20
 TX_COUNT = 50000
 REPORT_PCT = 0.1
 

tests/macro_benchmark/groups/delete/common.py

@@ -21,22 +21,21 @@ seed(0)
 def create_vertices(vertex_count):
     for vertex in range(vertex_count):
         print("CREATE (:Label {id: %d})" % vertex)
-        if (vertex != 0 and vertex % BATCH_SIZE == 0) or \
-                (vertex + 1 == vertex_count):
+        if (vertex != 0 and vertex % BATCH_SIZE == 0) or (vertex + 1 == vertex_count):
             print(";")
 
 
 def create_edges(edge_count, vertex_count):
-    """ vertex_count is the number of already existing vertices in graph """
+    """vertex_count is the number of already existing vertices in graph"""
     matches = []
     merges = []
     for edge in range(edge_count):
-        matches.append("MATCH (a%d :Label {id: %d}), (b%d :Label {id: %d})" %
-            (edge, randint(0, vertex_count - 1),
-             edge, randint(0, vertex_count - 1)))
+        matches.append(
+            "MATCH (a%d :Label {id: %d}), (b%d :Label {id: %d})"
+            % (edge, randint(0, vertex_count - 1), edge, randint(0, vertex_count - 1))
+        )
         merges.append("CREATE (a%d)-[:Type]->(b%d)" % (edge, edge))
-        if (edge != 0 and edge % BATCH_SIZE == 0) or \
-                ((edge + 1) == edge_count):
+        if (edge != 0 and edge % BATCH_SIZE == 0) or ((edge + 1) == edge_count):
             print(" ".join(matches + merges))
             print(";")
             matches = []

tests/macro_benchmark/groups/expression/common.py

@@ -9,8 +9,10 @@
 # by the Apache License, Version 2.0, included in the file
 # licenses/APL.txt.
 
+
 def generate(expressions, repetitions):
     idx = 0
+
     def get_alias():
         nonlocal idx
         idx += 1

tests/macro_benchmark/groups/expression/expression.run.py

@@ -11,11 +11,31 @@
 
 import common
 
-expressions = ['1 + 3', '2 - 1', '2 * 5', '5 / 2', '5 % 5', '-5' + '1.4 + 3.3',
-               '6.2 - 5.4', '6.5 * 1.2', '6.6 / 1.2', '8.7 % 3.2', '-6.6',
-               '"Flo" + "Lasta"', 'true AND false', 'true OR false',
-               'true XOR false', 'NOT true', '1 < 2', '2 = 3', '6.66 < 10.2',
-               '3.14 = 3.2', '"Ana" < "Ivana"', '"Ana" = "Mmmmm"',
-               'Null < Null', 'Null = Null']
+expressions = [
+    "1 + 3",
+    "2 - 1",
+    "2 * 5",
+    "5 / 2",
+    "5 % 5",
+    "-5" + "1.4 + 3.3",
+    "6.2 - 5.4",
+    "6.5 * 1.2",
+    "6.6 / 1.2",
+    "8.7 % 3.2",
+    "-6.6",
+    '"Flo" + "Lasta"',
+    "true AND false",
+    "true OR false",
+    "true XOR false",
+    "NOT true",
+    "1 < 2",
+    "2 = 3",
+    "6.66 < 10.2",
+    "3.14 = 3.2",
+    '"Ana" < "Ivana"',
+    '"Ana" = "Mmmmm"',
+    "Null < Null",
+    "Null = Null",
+]
 
 print(common.generate(expressions, 30))

tests/macro_benchmark/groups/match/setup.py

@@ -18,9 +18,11 @@ from random import randint, seed
 
 seed(0)
 
+
 def rint(upper_bound_exclusive):
     return randint(0, upper_bound_exclusive - 1)
 
+
 VERTEX_COUNT = 1500
 EDGE_COUNT = VERTEX_COUNT * 15
 
@@ -28,7 +30,7 @@ EDGE_COUNT = VERTEX_COUNT * 15
 LABEL_COUNT = 10
 
 MAX_LABELS = 5  # maximum number of labels in a vertex
-MAX_PROPS = 4   # maximum number of properties in a vertex/edge
+MAX_PROPS = 4  # maximum number of properties in a vertex/edge
 MAX_PROP_VALUE = 1000
 
 # some consts used in mutiple files
@@ -38,7 +40,6 @@ PROP_PREFIX = "Prop"
 ID = "id"
 
 
-
 def labels():
     labels = ":" + LABEL_INDEX
     for _ in range(rint(MAX_LABELS)):
@@ -47,12 +48,11 @@ def labels():
 
 
 def properties(id):
-    """ Generates a properties string with [0, MAX_PROPS) properties.
+    """Generates a properties string with [0, MAX_PROPS) properties.
     Note that if PropX is generated, then all the PropY where Y < X
     are generated. Thus most labels have Prop0, and least have PropMAX_PROPS.
     """
-    props = {"%s%d" % (PROP_PREFIX, i): rint(MAX_PROP_VALUE)
-             for i in range(rint(MAX_PROPS))}
+    props = {"%s%d" % (PROP_PREFIX, i): rint(MAX_PROP_VALUE) for i in range(rint(MAX_PROPS))}
     props[ID] = id
     return "{" + ", ".join("%s: %s" % kv for kv in props.items()) + "}"
 
@@ -74,21 +74,20 @@ def main():
     # create vertices
     for vertex_index in range(VERTEX_COUNT):
         print("CREATE %s" % vertex(vertex_index))
-        if (vertex_index != 0 and vertex_index % BATCH_SIZE == 0) or \
-                vertex_index + 1 == VERTEX_COUNT:
+        if (vertex_index != 0 and vertex_index % BATCH_SIZE == 0) or vertex_index + 1 == VERTEX_COUNT:
             print(";")
     print("MATCH (n) RETURN assert(count(n) = %d);" % VERTEX_COUNT)
 
     # create edges stohastically
-    attempts = VERTEX_COUNT ** 2
-    p = EDGE_COUNT / VERTEX_COUNT ** 2
-    print("MATCH (a) WITH a MATCH (b) WITH a, b WHERE rand() < %f "
-          " CREATE (a)-[:EdgeType]->(b);" % p)
+    attempts = VERTEX_COUNT**2
+    p = EDGE_COUNT / VERTEX_COUNT**2
+    print("MATCH (a) WITH a MATCH (b) WITH a, b WHERE rand() < %f " " CREATE (a)-[:EdgeType]->(b);" % p)
     sigma = (attempts * p * (1 - p)) ** 0.5
     delta = 5 * sigma
-    print("MATCH (n)-[r]->() WITH count(r) AS c "
-          "RETURN assert(c >= %d AND c <= %d);" % (
-            EDGE_COUNT - delta, EDGE_COUNT + delta))
+    print(
+        "MATCH (n)-[r]->() WITH count(r) AS c "
+        "RETURN assert(c >= %d AND c <= %d);" % (EDGE_COUNT - delta, EDGE_COUNT + delta)
+    )
 
 
 if __name__ == "__main__":

tests/macro_benchmark/groups/match/vertex_on_index.run.py

@@ -11,6 +11,6 @@
 
 from setup import LABEL_INDEX, ID, VERTEX_COUNT, rint
 
-print("UNWIND range(0, 10000) AS i "
-      "MATCH (n:%s {%s: %d}) RETURN n SKIP 1000000" % (
-        LABEL_INDEX, ID, rint(VERTEX_COUNT)))
+print(
+    "UNWIND range(0, 10000) AS i " "MATCH (n:%s {%s: %d}) RETURN n SKIP 1000000" % (LABEL_INDEX, ID, rint(VERTEX_COUNT))
+)

tests/macro_benchmark/groups/match/vertex_on_label.run.py

@@ -12,5 +12,4 @@
 from setup import LABEL_COUNT, LABEL_PREFIX
 
 for i in range(LABEL_COUNT):
-    print("UNWIND range(0, 30) AS i MATCH (n:%s%d) "
-          "RETURN n SKIP 1000000;" % (LABEL_PREFIX, i))
+    print("UNWIND range(0, 30) AS i MATCH (n:%s%d) " "RETURN n SKIP 1000000;" % (LABEL_PREFIX, i))

tests/macro_benchmark/groups/match/vertex_on_label_property.run.py

@@ -9,8 +9,17 @@
 # by the Apache License, Version 2.0, included in the file
 # licenses/APL.txt.
 
-from setup import LABEL_PREFIX, PROP_PREFIX, MAX_PROPS, MAX_PROP_VALUE, LABEL_COUNT, rint
+from setup import (
+    LABEL_PREFIX,
+    PROP_PREFIX,
+    MAX_PROPS,
+    MAX_PROP_VALUE,
+    LABEL_COUNT,
+    rint,
+)
 
 for i in range(LABEL_COUNT):
-    print("UNWIND range(0, 50) AS i MATCH (n:%s%d {%s%d: %d}) RETURN n SKIP 10000;" % (
-        LABEL_PREFIX, i, PROP_PREFIX, rint(MAX_PROPS), rint(MAX_PROP_VALUE)))
+    print(
+        "UNWIND range(0, 50) AS i MATCH (n:%s%d {%s%d: %d}) RETURN n SKIP 10000;"
+        % (LABEL_PREFIX, i, PROP_PREFIX, rint(MAX_PROPS), rint(MAX_PROP_VALUE))
+    )

tests/macro_benchmark/groups/match/vertex_on_property.run.py

@@ -11,5 +11,7 @@
 
 from setup import PROP_PREFIX, MAX_PROPS, rint, MAX_PROP_VALUE
 
-print("UNWIND range(0, 50) AS i MATCH (n {%s%d: %d}) RETURN n SKIP 10000" % (
-    PROP_PREFIX, rint(MAX_PROPS), rint(MAX_PROP_VALUE)))
+print(
+    "UNWIND range(0, 50) AS i MATCH (n {%s%d: %d}) RETURN n SKIP 10000"
+    % (PROP_PREFIX, rint(MAX_PROPS), rint(MAX_PROP_VALUE))
+)

tests/macro_benchmark/groups/return/setup.py

@@ -21,5 +21,6 @@ def main():
         if i != 0 and i % BATCH_SIZE == 0:
             print(";")
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     main()

tests/macro_benchmark/jail_faker.py

@@ -28,6 +28,7 @@ from signal import *
 class ProcessException(Exception):
     pass
 
+
 class StorageException(Exception):
     pass
 
@@ -41,10 +42,11 @@ class Process:
         self._usage = {}
         self._files = []
 
-    def run(self, binary, args=None, env=None, timeout=120,
-            stdin="/dev/null", cwd="."):
-        if args is None: args = []
-        if env is None: env = {}
+    def run(self, binary, args=None, env=None, timeout=120, stdin="/dev/null", cwd="."):
+        if args is None:
+            args = []
+        if env is None:
+            env = {}
         # don't start a new process if one is already running
         if self._proc != None and self._proc.returncode == None:
             raise ProcessException
@@ -65,15 +67,14 @@ class Process:
         self._timeout = timeout
 
         # start process
-        self._proc = subprocess.Popen(exe, env=env, cwd=cwd,
-                stdin=open(stdin, "r"))
+        self._proc = subprocess.Popen(exe, env=env, cwd=cwd, stdin=open(stdin, "r"))
 
     def run_and_wait(self, *args, **kwargs):
         check = kwargs.pop("check", True)
         self.run(*args, **kwargs)
         return self.wait(check)
 
-    def wait(self, check = True):
+    def wait(self, check=True):
         if self._proc == None:
             raise ProcessException
         self._proc.wait()
@@ -100,18 +101,17 @@ class Process:
     # this is implemented only in the real API
     def set_cpus(self, cpus, hyper=True):
         s = "out" if not hyper else ""
-        sys.stderr.write("WARNING: Trying to set cpus for {} to "
-                "{} with{} hyperthreading!\n".format(str(self), cpus, s))
+        sys.stderr.write(
+            "WARNING: Trying to set cpus for {} to " "{} with{} hyperthreading!\n".format(str(self), cpus, s)
+        )
 
     # this is implemented only in the real API
     def set_nproc(self, nproc):
-        sys.stderr.write("WARNING: Trying to set nproc for {} to "
-                "{}!\n".format(str(self), nproc))
+        sys.stderr.write("WARNING: Trying to set nproc for {} to " "{}!\n".format(str(self), nproc))
 
     # this is implemented only in the real API
     def set_memory(self, memory):
-        sys.stderr.write("WARNING: Trying to set memory for {} to "
-                "{}\n".format(str(self), memory))
+        sys.stderr.write("WARNING: Trying to set memory for {} to " "{}\n".format(str(self), memory))
 
     # WARNING: this won't be implemented in the real API
     def get_pid(self):
@@ -121,7 +121,8 @@ class Process:
 
     def _set_usage(self, val, name, only_value=False):
         self._usage[name] = val
-        if only_value: return
+        if only_value:
+            return
         maxname = "max_" + name
         maxval = val
         if maxname in self._usage:
@@ -133,7 +134,8 @@ class Process:
         self._watchdog()
 
     def _update_usage(self):
-        if self._proc == None: return
+        if self._proc == None:
+            return
         try:
             f = open("/proc/{}/stat".format(self._proc.pid), "r")
             data_stat = f.read().split()
@@ -144,21 +146,20 @@ class Process:
         except:
             return
         # for a description of these fields see: man proc; man times
-        utime, stime, cutime, cstime = map(
-                lambda x: int(x) / self._ticks_per_sec, data_stat[13:17])
+        utime, stime, cutime, cstime = map(lambda x: int(x) / self._ticks_per_sec, data_stat[13:17])
         self._set_usage(utime + stime + cutime + cstime, "cpu", only_value=True)
         self._set_usage(utime + cutime, "cpu_user", only_value=True)
         self._set_usage(stime + cstime, "cpu_sys", only_value=True)
         self._set_usage(int(data_stat[19]), "threads")
-        mem_vm, mem_res, mem_shr = map(
-                lambda x: int(x) * self._page_size // 1024, data_statm[:3])
+        mem_vm, mem_res, mem_shr = map(lambda x: int(x) * self._page_size // 1024, data_statm[:3])
         self._set_usage(mem_res, "memory")
 
     def _watchdog(self):
-        if self._proc == None or self._proc.returncode != None: return
-        if time.time() - self._start_time < self._timeout: return
-        sys.stderr.write("Timeout of {}s reached, sending "
-                "SIGKILL to {}!\n".format(self._timeout, self))
+        if self._proc == None or self._proc.returncode != None:
+            return
+        if time.time() - self._start_time < self._timeout:
+            return
+        sys.stderr.write("Timeout of {}s reached, sending " "SIGKILL to {}!\n".format(self._timeout, self))
         self.send_signal(SIGKILL)
         self.get_status()
 
@@ -172,22 +173,27 @@ PROCESSES_NUM = 8
 _processes = [Process(i) for i in range(1, PROCESSES_NUM + 1)]
 _last_process = 0
 
+
 def _usage_updater():
     while True:
         for proc in _processes:
             proc._do_background_tasks()
         time.sleep(0.1)
 
+
 _thread = threading.Thread(target=_usage_updater, daemon=True)
 _thread.start()
 
+
 @atexit.register
 def cleanup():
     for proc in _processes:
-        if proc._proc == None: continue
+        if proc._proc == None:
+            continue
         proc.send_signal(SIGKILL)
         proc.get_status()
 
+
 # end of private methods ------------------------------------------------------
 
 
@@ -199,6 +205,7 @@ def get_process():
         return proc
     return None
 
+
 def get_host_info():
     with open("/proc/meminfo") as f:
         memdata = f.read()
@@ -215,21 +222,24 @@ def get_host_info():
 
     threads, cpus = 0, set()
     for row in cpudata.split("\n\n"):
-        if not row: continue
+        if not row:
+            continue
         data = row.split("\n")
         core_id, physical_id = -1, -1
         for line in data:
             name, val = map(lambda x: x.strip(), line.split(":"))
-            if name == "physical id": physical_id = int(val)
-            elif name == "core id": core_id = int(val)
+            if name == "physical id":
+                physical_id = int(val)
+            elif name == "core id":
+                core_id = int(val)
         threads += 1
         cpus.add((core_id, physical_id))
     cpus = len(cpus)
 
     hyper = True if cpus != threads else False
 
-    return {"cpus": cpus, "memory": memory, "hyperthreading": hyper,
-            "threads": threads}
+    return {"cpus": cpus, "memory": memory, "hyperthreading": hyper, "threads": threads}
+
 
 # placeholder function that stores a label in the real API
 def store_label(label):
@@ -253,6 +263,8 @@ If chain is None, this function performs the following commands:
 If chain is either "INPUT" or "OUTPUT" then only that chain is cleared using
 the appropriate subset of the above mentioned commands.
 """
+
+
 def network_flush_rules(chain=None):
     print("Network flush rules: chain={}".format(chain))
 
@@ -300,12 +312,13 @@ in the following diagram:
     Other combinations of `chain`, `src`/`dst` and `sport`/`dport` can be used,
     but are advised to be used only when you exactly know what you are doing :)
 """
-def network_block_tcp(chain=None,
-                      src=None, dst=None,
-                      sport=None, dport=None,
-                      action=None):
-    print("Network block TCP: chain={}, src={}, dst={}, sport={}, dport={}, "
-          "action={}".format(chain, src, dst, sport, dport, action))
+
+
+def network_block_tcp(chain=None, src=None, dst=None, sport=None, dport=None, action=None):
+    print(
+        "Network block TCP: chain={}, src={}, dst={}, sport={}, dport={}, "
+        "action={}".format(chain, src, dst, sport, dport, action)
+    )
 
 
 """
@@ -319,28 +332,24 @@ same* parameters that were used to define the rule in the first place.
 All other documentation for this function is the same as for
 `network_block_tcp`, so take a look there.
 """
-def network_unblock_tcp(chain=None,
-                        src=None, dst=None,
-                        sport=None, dport=None,
-                        action=None):
-    print("Network unblock TCP: chain={}, src={}, dst={}, sport={}, dport={}, "
-          "action={}".format(chain, src, dst, sport, dport, action))
+
+
+def network_unblock_tcp(chain=None, src=None, dst=None, sport=None, dport=None, action=None):
+    print(
+        "Network unblock TCP: chain={}, src={}, dst={}, sport={}, dport={}, "
+        "action={}".format(chain, src, dst, sport, dport, action)
+    )
 
 
 # this function is deprecated
 def store_data(data):
     pass
 
+
 # placeholder function that returns real data in the real API
 def get_network_usage():
     usage = {
-        "lo": {
-            "bytes": {"rx": 0, "tx": 0},
-            "packets": {"rx": 0, "tx": 0}
-        },
-        "eth0": {
-            "bytes": {"rx": 0, "tx": 0},
-            "packets": {"rx": 0, "tx": 0}
-        }
+        "lo": {"bytes": {"rx": 0, "tx": 0}, "packets": {"rx": 0, "tx": 0}},
+        "eth0": {"bytes": {"rx": 0, "tx": 0}, "packets": {"rx": 0, "tx": 0}},
     }
     return usage

tests/macro_benchmark/long_running_suite.py

@@ -38,27 +38,30 @@ class LongRunningSuite:
         duration = config["duration"]
         if self.args.duration:
             duration = self.args.duration
-        log.info("Executing run for {} seconds".format(
-                duration))
+        log.info("Executing run for {} seconds".format(duration))
         results = runner.run(next(scenario.get("run")()), duration, config["client"])
 
         runner.stop()
 
         measurements = []
         summary_format = "{:>15} {:>22} {:>22}\n"
-        self.summary = summary_format.format(
-                "elapsed_time", "num_executed_queries", "num_executed_steps")
+        self.summary = summary_format.format("elapsed_time", "num_executed_queries", "num_executed_steps")
         for result in results:
             self.summary += summary_format.format(
-                    result["elapsed_time"], result["num_executed_queries"],
-                    result["num_executed_steps"])
-            measurements.append({
-                "target": "throughput",
-                "time": result["elapsed_time"],
-                "value": result["num_executed_queries"],
-                "steps": result["num_executed_steps"],
-                "unit": "number of executed queries",
-                "type": "throughput"})
+                result["elapsed_time"],
+                result["num_executed_queries"],
+                result["num_executed_steps"],
+            )
+            measurements.append(
+                {
+                    "target": "throughput",
+                    "time": result["elapsed_time"],
+                    "value": result["num_executed_queries"],
+                    "steps": result["num_executed_steps"],
+                    "unit": "number of executed queries",
+                    "type": "throughput",
+                }
+            )
         self.summary += "\n\nThroughput: " + str(measurements[-1]["value"])
         self.summary += "\nExecuted steps: " + str(measurements[-1]["steps"])
         return measurements
@@ -75,8 +78,7 @@ class _LongRunningRunner:
         self.log = logging.getLogger("_LongRunningRunner")
         self.database = database
         self.query_client = QueryClient(args, num_client_workers)
-        self.long_running_client = LongRunningClient(args, num_client_workers,
-                                                     workload)
+        self.long_running_client = LongRunningClient(args, num_client_workers, workload)
 
     def start(self):
         self.database.start()
@@ -85,8 +87,7 @@ class _LongRunningRunner:
         return self.query_client(queries, self.database, num_client_workers)
 
     def run(self, config, duration, client, num_client_workers=None):
-        return self.long_running_client(
-            config, self.database, duration, client, num_client_workers)
+        return self.long_running_client(config, self.database, duration, client, num_client_workers)
 
     def stop(self):
         self.log.info("stop")
@@ -99,44 +100,46 @@ class MemgraphRunner(_LongRunningRunner):
     """
     Configures memgraph database for LongRunningSuite execution.
     """
+
     def __init__(self, args):
         argp = ArgumentParser("MemgraphRunnerArgumentParser")
-        argp.add_argument("--num-database-workers", type=int, default=8,
-                          help="Number of workers")
-        argp.add_argument("--num-client-workers", type=int, default=24,
-                          help="Number of clients")
-        argp.add_argument("--workload", type=str, default="",
-                          help="Type of client workload. Sets \
-                          scenario flag for 'TestClient'")
+        argp.add_argument("--num-database-workers", type=int, default=8, help="Number of workers")
+        argp.add_argument("--num-client-workers", type=int, default=24, help="Number of clients")
+        argp.add_argument(
+            "--workload",
+            type=str,
+            default="",
+            help="Type of client workload. Sets \
+                          scenario flag for 'TestClient'",
+        )
         self.args, remaining_args = argp.parse_known_args(args)
-        assert not APOLLO or self.args.num_database_workers, \
-            "--num-database-workers is obligatory flag on apollo"
-        assert not APOLLO or self.args.num_client_workers, \
-            "--num-client-workers is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_database_workers, "--num-database-workers is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_client_workers, "--num-client-workers is obligatory flag on apollo"
         database = Memgraph(remaining_args, self.args.num_database_workers)
-        super(MemgraphRunner, self).__init__(
-                remaining_args, database, self.args.num_client_workers,
-                self.args.workload)
+        super(MemgraphRunner, self).__init__(remaining_args, database, self.args.num_client_workers, self.args.workload)
 
 
 class NeoRunner(_LongRunningRunner):
     """
     Configures neo4j database for QuerySuite execution.
     """
+
     def __init__(self, args):
         argp = ArgumentParser("NeoRunnerArgumentParser")
-        argp.add_argument("--runner-config",
-                          default=get_absolute_path("config/neo4j.conf"),
-                          help="Path to neo config file")
-        argp.add_argument("--num-client-workers", type=int, default=24,
-                          help="Number of clients")
-        argp.add_argument("--workload", type=str, default="",
-                          help="Type of client workload. Sets \
-                          scenario flag for 'TestClient'")
+        argp.add_argument(
+            "--runner-config",
+            default=get_absolute_path("config/neo4j.conf"),
+            help="Path to neo config file",
+        )
+        argp.add_argument("--num-client-workers", type=int, default=24, help="Number of clients")
+        argp.add_argument(
+            "--workload",
+            type=str,
+            default="",
+            help="Type of client workload. Sets \
+                          scenario flag for 'TestClient'",
+        )
         self.args, remaining_args = argp.parse_known_args(args)
-        assert not APOLLO or self.args.num_client_workers, \
-            "--client-num-clients is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_client_workers, "--client-num-clients is obligatory flag on apollo"
         database = Neo(remaining_args, self.args.runner_config)
-        super(NeoRunner, self).__init__(
-                remaining_args, database, self.args.num_client_workers,
-                self.args.workload)
+        super(NeoRunner, self).__init__(remaining_args, database, self.args.num_client_workers, self.args.workload)

tests/macro_benchmark/query_suite.py

@@ -33,21 +33,48 @@ class _QuerySuite:
     a single Cypher query that is benchmarked, and teardown steps
     (Cypher queries) executed after the benchmark.
     """
+
     # what the QuerySuite can work with
-    KNOWN_KEYS = {"config", "setup", "itersetup", "run", "iterteardown",
-                  "teardown", "common"}
-    FORMAT = ["{:>24}", "{:>28}", "{:>16}", "{:>18}", "{:>22}",
-              "{:>16}", "{:>16}", "{:>16}"]
+    KNOWN_KEYS = {
+        "config",
+        "setup",
+        "itersetup",
+        "run",
+        "iterteardown",
+        "teardown",
+        "common",
+    }
+    FORMAT = [
+        "{:>24}",
+        "{:>28}",
+        "{:>16}",
+        "{:>18}",
+        "{:>22}",
+        "{:>16}",
+        "{:>16}",
+        "{:>16}",
+    ]
     FULL_FORMAT = "".join(FORMAT) + "\n"
-    headers = ["group_name", "scenario_name", "parsing_time",
-               "planning_time", "plan_execution_time",
-               WALL_TIME, CPU_TIME, MAX_MEMORY]
+    headers = [
+        "group_name",
+        "scenario_name",
+        "parsing_time",
+        "planning_time",
+        "plan_execution_time",
+        WALL_TIME,
+        CPU_TIME,
+        MAX_MEMORY,
+    ]
     summary = summary_raw = FULL_FORMAT.format(*headers)
 
     def __init__(self, args):
         argp = ArgumentParser("MemgraphRunnerArgumentParser")
-        argp.add_argument("--perf", default=False, action="store_true",
-            help="Run perf on running tests and store data")
+        argp.add_argument(
+            "--perf",
+            default=False,
+            action="store_true",
+            help="Run perf on running tests and store data",
+        )
         self.args, remaining_args = argp.parse_known_args(args)
 
     def run(self, scenario, group_name, scenario_name, runner):
@@ -62,8 +89,7 @@ class _QuerySuite:
                 r_val = runner.execute(queries(), num_client_workers)
             else:
                 r_val = None
-            log.info("\t%s done in %.2f seconds" % (config_name,
-                                                    time.time() - start_time))
+            log.info("\t%s done in %.2f seconds" % (config_name, time.time() - start_time))
             return r_val
 
         measurements = defaultdict(list)
@@ -75,8 +101,12 @@ class _QuerySuite:
             execute("setup")
 
             # warmup phase
-            for _ in range(min(scenario_config.get("iterations", 1),
-                               scenario_config.get("warmup", 2))):
+            for _ in range(
+                min(
+                    scenario_config.get("iterations", 1),
+                    scenario_config.get("warmup", 2),
+                )
+            ):
                 execute("itersetup")
                 execute("run")
                 execute("iterteardown")
@@ -91,15 +121,28 @@ class _QuerySuite:
                 execute("itersetup")
 
                 if self.args.perf:
-                    file_directory = './perf_results/run_%d/%s/%s/' \
-                                      % (rerun_cnt, group_name, scenario_name)
+                    file_directory = "./perf_results/run_%d/%s/%s/" % (
+                        rerun_cnt,
+                        group_name,
+                        scenario_name,
+                    )
                     os.makedirs(file_directory, exist_ok=True)
-                    file_name = '%d.perf.data' % iteration
+                    file_name = "%d.perf.data" % iteration
                     path = file_directory + file_name
                     database_pid = str(runner.database.database_bin._proc.pid)
                     self.perf_proc = subprocess.Popen(
-                        ["perf", "record", "-F", "999", "-g", "-o", path, "-p",
-                        database_pid])
+                        [
+                            "perf",
+                            "record",
+                            "-F",
+                            "999",
+                            "-g",
+                            "-o",
+                            path,
+                            "-p",
+                            database_pid,
+                        ]
+                    )
 
                 run_result = execute("run")
 
@@ -110,16 +153,15 @@ class _QuerySuite:
                 measurements["cpu_time"].append(run_result["cpu_time"])
                 measurements["max_memory"].append(run_result["max_memory"])
 
-                assert len(run_result["groups"]) == 1, \
-                        "Multiple groups in run step not yet supported"
+                assert len(run_result["groups"]) == 1, "Multiple groups in run step not yet supported"
 
                 group = run_result["groups"][0]
                 measurements["wall_time"].append(group["wall_time"])
 
-                for key in ["parsing_time", "plan_execution_time",
-                            "planning_time"]:
+                for key in ["parsing_time", "plan_execution_time", "planning_time"]:
                     for i in range(len(group.get("metadatas", []))):
-                        if not key in group["metadatas"][i]: continue
+                        if not key in group["metadatas"][i]:
+                            continue
                         measurements[key].append(group["metadatas"][i][key])
 
                 execute("iterteardown")
@@ -127,27 +169,35 @@ class _QuerySuite:
             execute("teardown")
             runner.stop()
 
-        self.append_scenario_summary(group_name, scenario_name,
-                                     measurements, num_iterations)
+        self.append_scenario_summary(group_name, scenario_name, measurements, num_iterations)
 
         # calculate mean, median and stdev of measurements
         for key in measurements:
             samples = measurements[key]
-            measurements[key] = {"mean": mean(samples),
-                                 "median": median(samples),
-                                 "stdev": stdev(samples),
-                                 "count": len(samples)}
+            measurements[key] = {
+                "mean": mean(samples),
+                "median": median(samples),
+                "stdev": stdev(samples),
+                "count": len(samples),
+            }
         measurements["group_name"] = group_name
         measurements["scenario_name"] = scenario_name
 
         return measurements
 
-    def append_scenario_summary(self, group_name, scenario_name,
-                                measurement_lists, num_iterations):
+    def append_scenario_summary(self, group_name, scenario_name, measurement_lists, num_iterations):
         self.summary += self.FORMAT[0].format(group_name)
         self.summary += self.FORMAT[1].format(scenario_name)
-        for i, key in enumerate(("parsing_time", "planning_time",
-                    "plan_execution_time", WALL_TIME, CPU_TIME, MAX_MEMORY)):
+        for i, key in enumerate(
+            (
+                "parsing_time",
+                "planning_time",
+                "plan_execution_time",
+                WALL_TIME,
+                CPU_TIME,
+                MAX_MEMORY,
+            )
+        ):
             if key not in measurement_lists:
                 time = "-"
             else:
@@ -162,11 +212,11 @@ class _QuerySuite:
         self.summary += "\n"
 
     def runners(self):
-        """ Which runners can execute a QuerySuite scenario """
+        """Which runners can execute a QuerySuite scenario"""
         assert False, "This is a base class, use one of derived suites"
 
     def groups(self):
-        """ Which groups can be executed by a QuerySuite scenario """
+        """Which groups can be executed by a QuerySuite scenario"""
         assert False, "This is a base class, use one of derived suites"
 
 
@@ -175,11 +225,20 @@ class QuerySuite(_QuerySuite):
         _QuerySuite.__init__(self, args)
 
     def runners(self):
-        return {"MemgraphRunner" : MemgraphRunner, "NeoRunner" : NeoRunner}
+        return {"MemgraphRunner": MemgraphRunner, "NeoRunner": NeoRunner}
 
     def groups(self):
-        return ["1000_create", "unwind_create", "match", "dense_expand",
-                "expression", "aggregation", "return", "update", "delete"]
+        return [
+            "1000_create",
+            "unwind_create",
+            "match",
+            "dense_expand",
+            "expression",
+            "aggregation",
+            "return",
+            "update",
+            "delete",
+        ]
 
 
 class QueryParallelSuite(_QuerySuite):
@@ -187,8 +246,10 @@ class QueryParallelSuite(_QuerySuite):
         _QuerySuite.__init__(self, args)
 
     def runners(self):
-        return {"MemgraphRunner" : MemgraphParallelRunner, "NeoRunner" :
-                NeoParallelRunner}
+        return {
+            "MemgraphRunner": MemgraphParallelRunner,
+            "NeoRunner": NeoParallelRunner,
+        }
 
     def groups(self):
         return ["aggregation_parallel", "create_parallel", "bfs_parallel"]
@@ -201,6 +262,7 @@ class _QueryRunner:
     Execution returns benchmarking data (execution times, memory
     usage etc).
     """
+
     def __init__(self, args, database, num_client_workers):
         self.log = logging.getLogger("_HarnessClientRunner")
         self.database = database
@@ -221,6 +283,7 @@ class MemgraphRunner(_QueryRunner):
     """
     Configures memgraph database for QuerySuite execution.
     """
+
     def __init__(self, args):
         database = Memgraph(args, 1)
         super(MemgraphRunner, self).__init__(args, database, 1)
@@ -230,11 +293,14 @@ class NeoRunner(_QueryRunner):
     """
     Configures neo4j database for QuerySuite execution.
     """
+
     def __init__(self, args):
         argp = ArgumentParser("NeoRunnerArgumentParser")
-        argp.add_argument("--runner-config",
-                          default=get_absolute_path("config/neo4j.conf"),
-                          help="Path to neo config file")
+        argp.add_argument(
+            "--runner-config",
+            default=get_absolute_path("config/neo4j.conf"),
+            help="Path to neo config file",
+        )
         self.args, remaining_args = argp.parse_known_args(args)
         database = Neo(remaining_args, self.args.runner_config)
         super(NeoRunner, self).__init__(remaining_args, database)
@@ -244,36 +310,32 @@ class NeoParallelRunner(_QueryRunner):
     """
     Configures neo4j database for QuerySuite execution.
     """
+
     def __init__(self, args):
         argp = ArgumentParser("NeoRunnerArgumentParser")
-        argp.add_argument("--runner-config",
-                          default=get_absolute_path("config/neo4j.conf"),
-                          help="Path to neo config file")
-        argp.add_argument("--num-client-workers", type=int, default=24,
-                          help="Number of clients")
+        argp.add_argument(
+            "--runner-config",
+            default=get_absolute_path("config/neo4j.conf"),
+            help="Path to neo config file",
+        )
+        argp.add_argument("--num-client-workers", type=int, default=24, help="Number of clients")
         self.args, remaining_args = argp.parse_known_args(args)
-        assert not APOLLO or self.args.num_client_workers, \
-                "--client-num-clients is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_client_workers, "--client-num-clients is obligatory flag on apollo"
         database = Neo(remaining_args, self.args.runner_config)
-        super(NeoRunner, self).__init__(
-                remaining_args, database, self.args.num_client_workers)
+        super(NeoRunner, self).__init__(remaining_args, database, self.args.num_client_workers)
 
 
 class MemgraphParallelRunner(_QueryRunner):
     """
     Configures memgraph database for QuerySuite execution.
     """
+
     def __init__(self, args):
         argp = ArgumentParser("MemgraphRunnerArgumentParser")
-        argp.add_argument("--num-database-workers", type=int, default=8,
-                          help="Number of workers")
-        argp.add_argument("--num-client-workers", type=int, default=24,
-                          help="Number of clients")
+        argp.add_argument("--num-database-workers", type=int, default=8, help="Number of workers")
+        argp.add_argument("--num-client-workers", type=int, default=24, help="Number of clients")
         self.args, remaining_args = argp.parse_known_args(args)
-        assert not APOLLO or self.args.num_database_workers, \
-                "--num-database-workers is obligatory flag on apollo"
-        assert not APOLLO or self.args.num_client_workers, \
-                "--num-client-workers is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_database_workers, "--num-database-workers is obligatory flag on apollo"
+        assert not APOLLO or self.args.num_client_workers, "--num-client-workers is obligatory flag on apollo"
         database = Memgraph(remaining_args, self.args.num_database_workers)
-        super(MemgraphParallelRunner, self).__init__(
-                remaining_args, database, self.args.num_client_workers)
+        super(MemgraphParallelRunner, self).__init__(remaining_args, database, self.args.num_client_workers)

tests/mgbench/benchmark.py

@@ -37,8 +37,7 @@ def get_queries(gen, count):
     return ret
 
 
-def match_patterns(dataset, variant, group, test, is_default_variant,
-                   patterns):
+def match_patterns(dataset, variant, group, test, is_default_variant, patterns):
     for pattern in patterns:
         verdict = [fnmatch.fnmatchcase(dataset, pattern[0])]
         if pattern[1] != "":
@@ -58,7 +57,7 @@ def filter_benchmarks(generators, patterns):
         pattern = patterns[i].split("/")
         if len(pattern) > 4 or len(pattern) == 0:
             raise Exception("Invalid benchmark description '" + pattern + "'!")
-        pattern.extend(["", "*", "*"][len(pattern) - 1:])
+        pattern.extend(["", "*", "*"][len(pattern) - 1 :])
         patterns[i] = pattern
     filtered = []
     for dataset in sorted(generators.keys()):
@@ -68,8 +67,7 @@ def filter_benchmarks(generators, patterns):
             current = collections.defaultdict(list)
             for group in tests:
                 for test_name, test_func in tests[group]:
-                    if match_patterns(dataset, variant, group, test_name,
-                                      is_default_variant, patterns):
+                    if match_patterns(dataset, variant, group, test_name, is_default_variant, patterns):
                         current[group].append((test_name, test_func))
             if len(current) > 0:
                 filtered.append((generator(variant), dict(current)))
@@ -79,43 +77,71 @@ def filter_benchmarks(generators, patterns):
 # Parse options.
 parser = argparse.ArgumentParser(
     description="Memgraph benchmark executor.",
-    formatter_class=argparse.ArgumentDefaultsHelpFormatter)
-parser.add_argument("benchmarks", nargs="*", default="",
-                    help="descriptions of benchmarks that should be run; "
-                    "multiple descriptions can be specified to run multiple "
-                    "benchmarks; the description is specified as "
-                    "dataset/variant/group/test; Unix shell-style wildcards "
-                    "can be used in the descriptions; variant, group and test "
-                    "are optional and they can be left out; the default "
-                    "variant is '' which selects the default dataset variant; "
-                    "the default group is '*' which selects all groups; the "
-                    "default test is '*' which selects all tests")
-parser.add_argument("--memgraph-binary",
-                    default=helpers.get_binary_path("memgraph"),
-                    help="Memgraph binary used for benchmarking")
-parser.add_argument("--client-binary",
-                    default=helpers.get_binary_path("tests/mgbench/client"),
-                    help="client binary used for benchmarking")
-parser.add_argument("--num-workers-for-import", type=int,
-                    default=multiprocessing.cpu_count() // 2,
-                    help="number of workers used to import the dataset")
-parser.add_argument("--num-workers-for-benchmark", type=int,
-                    default=1,
-                    help="number of workers used to execute the benchmark")
-parser.add_argument("--single-threaded-runtime-sec", type=int,
-                    default=10,
-                    help="single threaded duration of each test")
-parser.add_argument("--no-load-query-counts", action="store_true",
-                    help="disable loading of cached query counts")
-parser.add_argument("--no-save-query-counts", action="store_true",
-                    help="disable storing of cached query counts")
-parser.add_argument("--export-results", default="",
-                    help="file path into which results should be exported")
-parser.add_argument("--temporary-directory", default="/tmp",
-                    help="directory path where temporary data should "
-                    "be stored")
-parser.add_argument("--no-properties-on-edges", action="store_true",
-                    help="disable properties on edges")
+    formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+)
+parser.add_argument(
+    "benchmarks",
+    nargs="*",
+    default="",
+    help="descriptions of benchmarks that should be run; "
+    "multiple descriptions can be specified to run multiple "
+    "benchmarks; the description is specified as "
+    "dataset/variant/group/test; Unix shell-style wildcards "
+    "can be used in the descriptions; variant, group and test "
+    "are optional and they can be left out; the default "
+    "variant is '' which selects the default dataset variant; "
+    "the default group is '*' which selects all groups; the "
+    "default test is '*' which selects all tests",
+)
+parser.add_argument(
+    "--memgraph-binary",
+    default=helpers.get_binary_path("memgraph"),
+    help="Memgraph binary used for benchmarking",
+)
+parser.add_argument(
+    "--client-binary",
+    default=helpers.get_binary_path("tests/mgbench/client"),
+    help="client binary used for benchmarking",
+)
+parser.add_argument(
+    "--num-workers-for-import",
+    type=int,
+    default=multiprocessing.cpu_count() // 2,
+    help="number of workers used to import the dataset",
+)
+parser.add_argument(
+    "--num-workers-for-benchmark",
+    type=int,
+    default=1,
+    help="number of workers used to execute the benchmark",
+)
+parser.add_argument(
+    "--single-threaded-runtime-sec",
+    type=int,
+    default=10,
+    help="single threaded duration of each test",
+)
+parser.add_argument(
+    "--no-load-query-counts",
+    action="store_true",
+    help="disable loading of cached query counts",
+)
+parser.add_argument(
+    "--no-save-query-counts",
+    action="store_true",
+    help="disable storing of cached query counts",
+)
+parser.add_argument(
+    "--export-results",
+    default="",
+    help="file path into which results should be exported",
+)
+parser.add_argument(
+    "--temporary-directory",
+    default="/tmp",
+    help="directory path where temporary data should " "be stored",
+)
+parser.add_argument("--no-properties-on-edges", action="store_true", help="disable properties on edges")
 args = parser.parse_args()
 
 # Detect available datasets.
@@ -124,8 +150,7 @@ for key in dir(datasets):
     if key.startswith("_"):
         continue
     dataset = getattr(datasets, key)
-    if not inspect.isclass(dataset) or dataset == datasets.Dataset or \
-            not issubclass(dataset, datasets.Dataset):
+    if not inspect.isclass(dataset) or dataset == datasets.Dataset or not issubclass(dataset, datasets.Dataset):
         continue
     tests = collections.defaultdict(list)
     for funcname in dir(dataset):
@@ -135,8 +160,9 @@ for key in dir(datasets):
         tests[group].append((test, funcname))
     generators[dataset.NAME] = (dataset, dict(tests))
     if dataset.PROPERTIES_ON_EDGES and args.no_properties_on_edges:
-        raise Exception("The \"{}\" dataset requires properties on edges, "
-                        "but you have disabled them!".format(dataset.NAME))
+        raise Exception(
+            'The "{}" dataset requires properties on edges, ' "but you have disabled them!".format(dataset.NAME)
+        )
 
 # List datasets if there is no specified dataset.
 if len(args.benchmarks) == 0:
@@ -144,8 +170,11 @@ if len(args.benchmarks) == 0:
     for name in sorted(generators.keys()):
         print("Dataset:", name)
         dataset, tests = generators[name]
-        print("    Variants:", ", ".join(dataset.VARIANTS),
-              "(default: " + dataset.DEFAULT_VARIANT + ")")
+        print(
+            "    Variants:",
+            ", ".join(dataset.VARIANTS),
+            "(default: " + dataset.DEFAULT_VARIANT + ")",
+        )
         for group in sorted(tests.keys()):
             print("    Group:", group)
             for test_name, test_func in tests[group]:
@@ -165,31 +194,38 @@ benchmarks = filter_benchmarks(generators, args.benchmarks)
 
 # Run all specified benchmarks.
 for dataset, tests in benchmarks:
-    log.init("Preparing", dataset.NAME + "/" + dataset.get_variant(),
-             "dataset")
-    dataset.prepare(cache.cache_directory("datasets", dataset.NAME,
-                                          dataset.get_variant()))
+    log.init("Preparing", dataset.NAME + "/" + dataset.get_variant(), "dataset")
+    dataset.prepare(cache.cache_directory("datasets", dataset.NAME, dataset.get_variant()))
 
     # Prepare runners and import the dataset.
-    memgraph = runners.Memgraph(args.memgraph_binary, args.temporary_directory,
-                                not args.no_properties_on_edges)
+    memgraph = runners.Memgraph(args.memgraph_binary, args.temporary_directory, not args.no_properties_on_edges)
     client = runners.Client(args.client_binary, args.temporary_directory)
     memgraph.start_preparation()
-    ret = client.execute(file_path=dataset.get_file(),
-                         num_workers=args.num_workers_for_import)
+    ret = client.execute(file_path=dataset.get_file(), num_workers=args.num_workers_for_import)
     usage = memgraph.stop()
 
     # Display import statistics.
     print()
     for row in ret:
-        print("Executed", row["count"], "queries in", row["duration"],
-              "seconds using", row["num_workers"],
-              "workers with a total throughput of", row["throughput"],
-              "queries/second.")
+        print(
+            "Executed",
+            row["count"],
+            "queries in",
+            row["duration"],
+            "seconds using",
+            row["num_workers"],
+            "workers with a total throughput of",
+            row["throughput"],
+            "queries/second.",
+        )
     print()
-    print("The database used", usage["cpu"],
-          "seconds of CPU time and peaked at",
-          usage["memory"] / 1024 / 1024, "MiB of RAM.")
+    print(
+        "The database used",
+        usage["cpu"],
+        "seconds of CPU time and peaked at",
+        usage["memory"] / 1024 / 1024,
+        "MiB of RAM.",
+    )
 
     # Save import results.
     import_key = [dataset.NAME, dataset.get_variant(), "__import__"]
@@ -208,24 +244,26 @@ for dataset, tests in benchmarks:
             config_key = [dataset.NAME, dataset.get_variant(), group, test]
             cached_count = config.get_value(*config_key)
             if cached_count is None:
-                print("Determining the number of queries necessary for",
-                      args.single_threaded_runtime_sec,
-                      "seconds of single-threaded runtime...")
+                print(
+                    "Determining the number of queries necessary for",
+                    args.single_threaded_runtime_sec,
+                    "seconds of single-threaded runtime...",
+                )
                 # First run to prime the query caches.
                 memgraph.start_benchmark()
                 client.execute(queries=get_queries(func, 1), num_workers=1)
                 # Get a sense of the runtime.
                 count = 1
                 while True:
-                    ret = client.execute(queries=get_queries(func, count),
-                                         num_workers=1)
+                    ret = client.execute(queries=get_queries(func, count), num_workers=1)
                     duration = ret[0]["duration"]
-                    should_execute = int(args.single_threaded_runtime_sec /
-                                         (duration / count))
-                    print("executed_queries={}, total_duration={}, "
-                          "query_duration={}, estimated_count={}".format(
-                              count, duration, duration / count,
-                              should_execute))
+                    should_execute = int(args.single_threaded_runtime_sec / (duration / count))
+                    print(
+                        "executed_queries={}, total_duration={}, "
+                        "query_duration={}, estimated_count={}".format(
+                            count, duration, duration / count, should_execute
+                        )
+                    )
                     # We don't have to execute the next iteration when
                     # `should_execute` becomes the same order of magnitude as
                     # `count * 10`.
@@ -235,45 +273,52 @@ for dataset, tests in benchmarks:
                     else:
                         count = count * 10
                 memgraph.stop()
-                config.set_value(*config_key, value={
-                    "count": count,
-                    "duration": args.single_threaded_runtime_sec})
+                config.set_value(*config_key, value={"count": count, "duration": args.single_threaded_runtime_sec})
             else:
-                print("Using cached query count of", cached_count["count"],
-                      "queries for", cached_count["duration"],
-                      "seconds of single-threaded runtime.")
-                count = int(cached_count["count"] *
-                            args.single_threaded_runtime_sec /
-                            cached_count["duration"])
+                print(
+                    "Using cached query count of",
+                    cached_count["count"],
+                    "queries for",
+                    cached_count["duration"],
+                    "seconds of single-threaded runtime.",
+                )
+                count = int(cached_count["count"] * args.single_threaded_runtime_sec / cached_count["duration"])
 
             # Benchmark run.
             print("Sample query:", get_queries(func, 1)[0][0])
-            print("Executing benchmark with", count, "queries that should "
-                  "yield a single-threaded runtime of",
-                  args.single_threaded_runtime_sec, "seconds.")
-            print("Queries are executed using", args.num_workers_for_benchmark,
-                  "concurrent clients.")
+            print(
+                "Executing benchmark with",
+                count,
+                "queries that should " "yield a single-threaded runtime of",
+                args.single_threaded_runtime_sec,
+                "seconds.",
+            )
+            print(
+                "Queries are executed using",
+                args.num_workers_for_benchmark,
+                "concurrent clients.",
+            )
             memgraph.start_benchmark()
-            ret = client.execute(queries=get_queries(func, count),
-                                 num_workers=args.num_workers_for_benchmark)[0]
+            ret = client.execute(
+                queries=get_queries(func, count),
+                num_workers=args.num_workers_for_benchmark,
+            )[0]
             usage = memgraph.stop()
             ret["database"] = usage
 
             # Output summary.
             print()
-            print("Executed", ret["count"], "queries in",
-                  ret["duration"], "seconds.")
+            print("Executed", ret["count"], "queries in", ret["duration"], "seconds.")
             print("Queries have been retried", ret["retries"], "times.")
-            print("Database used {:.3f} seconds of CPU time.".format(
-                  usage["cpu"]))
-            print("Database peaked at {:.3f} MiB of memory.".format(
-                  usage["memory"] / 1024.0 / 1024.0))
-            print("{:<31} {:>20} {:>20} {:>20}".format("Metadata:", "min",
-                                                       "avg", "max"))
+            print("Database used {:.3f} seconds of CPU time.".format(usage["cpu"]))
+            print("Database peaked at {:.3f} MiB of memory.".format(usage["memory"] / 1024.0 / 1024.0))
+            print("{:<31} {:>20} {:>20} {:>20}".format("Metadata:", "min", "avg", "max"))
             metadata = ret["metadata"]
             for key in sorted(metadata.keys()):
-                print("{name:>30}: {minimum:>20.06f} {average:>20.06f} "
-                      "{maximum:>20.06f}".format(name=key, **metadata[key]))
+                print(
+                    "{name:>30}: {minimum:>20.06f} {average:>20.06f} "
+                    "{maximum:>20.06f}".format(name=key, **metadata[key])
+                )
             log.success("Throughput: {:02f} QPS".format(ret["throughput"]))
 
             # Save results.

tests/mgbench/compare_results.py

@@ -85,39 +85,41 @@ def compare_results(results_from, results_to, fields):
                 if group == "__import__":
                     continue
                 for scenario, summary_to in scenarios.items():
-                    summary_from = recursive_get(
-                        results_from, dataset, variant, group, scenario,
-                        value={})
-                    if len(summary_from) > 0 and \
-                            summary_to["count"] != summary_from["count"] or \
-                            summary_to["num_workers"] != \
-                            summary_from["num_workers"]:
+                    summary_from = recursive_get(results_from, dataset, variant, group, scenario, value={})
+                    if (
+                        len(summary_from) > 0
+                        and summary_to["count"] != summary_from["count"]
+                        or summary_to["num_workers"] != summary_from["num_workers"]
+                    ):
                         raise Exception("Incompatible results!")
-                    testcode = "/".join([dataset, variant, group, scenario,
-                                         "{:02d}".format(
-                                             summary_to["num_workers"])])
+                    testcode = "/".join(
+                        [
+                            dataset,
+                            variant,
+                            group,
+                            scenario,
+                            "{:02d}".format(summary_to["num_workers"]),
+                        ]
+                    )
                     row = {}
                     performance_changed = False
                     for field in fields:
                         key = field["name"]
                         if key in summary_to:
-                            row[key] = compute_diff(
-                                summary_from.get(key, None),
-                                summary_to[key])
+                            row[key] = compute_diff(summary_from.get(key, None), summary_to[key])
                         elif key in summary_to["database"]:
                             row[key] = compute_diff(
-                                recursive_get(summary_from, "database", key,
-                                              value=None),
-                                summary_to["database"][key])
+                                recursive_get(summary_from, "database", key, value=None),
+                                summary_to["database"][key],
+                            )
                         else:
                             row[key] = compute_diff(
-                                recursive_get(summary_from, "metadata", key,
-                                              "average", value=None),
-                                summary_to["metadata"][key]["average"])
-                        if "diff" not in row[key] or \
-                                ("diff_treshold" in field and
-                                 abs(row[key]["diff"]) >=
-                                 field["diff_treshold"]):
+                                recursive_get(summary_from, "metadata", key, "average", value=None),
+                                summary_to["metadata"][key]["average"],
+                            )
+                        if "diff" not in row[key] or (
+                            "diff_treshold" in field and abs(row[key]["diff"]) >= field["diff_treshold"]
+                        ):
                             performance_changed = True
                     if performance_changed:
                         ret[testcode] = row
@@ -130,8 +132,15 @@ def generate_remarkup(fields, data):
         ret += "<table>\n"
         ret += "  <tr>\n"
         ret += "    <th>Testcode</th>\n"
-        ret += "\n".join(map(lambda x: "    <th>{}</th>".format(
-            x["name"].replace("_", " ").capitalize()), fields)) + "\n"
+        ret += (
+            "\n".join(
+                map(
+                    lambda x: "    <th>{}</th>".format(x["name"].replace("_", " ").capitalize()),
+                    fields,
+                )
+            )
+            + "\n"
+        )
         ret += "  </tr>\n"
         for testcode in sorted(data.keys()):
             ret += "  <tr>\n"
@@ -147,12 +156,9 @@ def generate_remarkup(fields, data):
                     else:
                         color = "red"
                     sign = "{{icon {} color={}}}".format(arrow, color)
-                    ret += "    <td>{:.3f}{} //({:+.2%})// {}</td>\n".format(
-                        value, field["unit"], diff, sign)
+                    ret += "    <td>{:.3f}{} //({:+.2%})// {}</td>\n".format(value, field["unit"], diff, sign)
                 else:
-                    ret += "    <td>{:.3f}{} //(new)// " \
-                           "{{icon plus color=blue}}</td>\n".format(
-                               value, field["unit"])
+                    ret += "    <td>{:.3f}{} //(new)// " "{{icon plus color=blue}}</td>\n".format(value, field["unit"])
             ret += "  </tr>\n"
         ret += "</table>\n"
     else:
@@ -161,11 +167,14 @@ def generate_remarkup(fields, data):
 
 
 if __name__ == "__main__":
-    parser = argparse.ArgumentParser(
-        description="Compare results of multiple benchmark runs.")
-    parser.add_argument("--compare", action="append", nargs=2,
-                        metavar=("from", "to"),
-                        help="compare results between `from` and `to` files")
+    parser = argparse.ArgumentParser(description="Compare results of multiple benchmark runs.")
+    parser.add_argument(
+        "--compare",
+        action="append",
+        nargs=2,
+        metavar=("from", "to"),
+        help="compare results between `from` and `to` files",
+    )
     parser.add_argument("--output", default="", help="output file name")
     args = parser.parse_args()
 

tests/mgbench/datasets.py

@@ -45,13 +45,10 @@ class Dataset:
             variant = self.DEFAULT_VARIANT
         if variant not in self.VARIANTS:
             raise ValueError("Invalid test variant!")
-        if (self.FILES and variant not in self.FILES) and \
-                (self.URLS and variant not in self.URLS):
-            raise ValueError("The variant doesn't have a defined URL or "
-                             "file path!")
+        if (self.FILES and variant not in self.FILES) and (self.URLS and variant not in self.URLS):
+            raise ValueError("The variant doesn't have a defined URL or " "file path!")
         if variant not in self.SIZES:
-            raise ValueError("The variant doesn't have a defined dataset "
-                             "size!")
+            raise ValueError("The variant doesn't have a defined dataset " "size!")
         self._variant = variant
         if self.FILES is not None:
             self._file = self.FILES.get(variant, None)
@@ -63,8 +60,7 @@ class Dataset:
             self._url = None
         self._size = self.SIZES[variant]
         if "vertices" not in self._size or "edges" not in self._size:
-            raise ValueError("The size defined for this variant doesn't "
-                             "have the number of vertices and/or edges!")
+            raise ValueError("The size defined for this variant doesn't " "have the number of vertices and/or edges!")
         self._num_vertices = self._size["vertices"]
         self._num_edges = self._size["edges"]
 
@@ -76,8 +72,7 @@ class Dataset:
         cached_input, exists = directory.get_file("dataset.cypher")
         if not exists:
             print("Downloading dataset file:", self._url)
-            downloaded_file = helpers.download_file(
-                    self._url, directory.get_path())
+            downloaded_file = helpers.download_file(self._url, directory.get_path())
             print("Unpacking and caching file:", downloaded_file)
             helpers.unpack_and_move_file(downloaded_file, cached_input)
         print("Using cached dataset file:", cached_input)
@@ -137,18 +132,20 @@ class Pokec(Dataset):
     # Arango benchmarks
 
     def benchmark__arango__single_vertex_read(self):
-        return ("MATCH (n:User {id : $id}) RETURN n",
-                {"id": self._get_random_vertex()})
+        return ("MATCH (n:User {id : $id}) RETURN n", {"id": self._get_random_vertex()})
 
     def benchmark__arango__single_vertex_write(self):
-        return ("CREATE (n:UserTemp {id : $id}) RETURN n",
-                {"id": random.randint(1, self._num_vertices * 10)})
+        return (
+            "CREATE (n:UserTemp {id : $id}) RETURN n",
+            {"id": random.randint(1, self._num_vertices * 10)},
+        )
 
     def benchmark__arango__single_edge_write(self):
         vertex_from, vertex_to = self._get_random_from_to()
-        return ("MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m "
-                "CREATE (n)-[e:Temp]->(m) RETURN e",
-                {"from": vertex_from, "to": vertex_to})
+        return (
+            "MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m " "CREATE (n)-[e:Temp]->(m) RETURN e",
+            {"from": vertex_from, "to": vertex_to},
+        )
 
     def benchmark__arango__aggregate(self):
         return ("MATCH (n:User) RETURN n.age, COUNT(*)", {})
@@ -157,92 +154,103 @@ class Pokec(Dataset):
         return ("MATCH (n:User) WHERE n.age >= 18 RETURN n.age, COUNT(*)", {})
 
     def benchmark__arango__expansion_1(self):
-        return ("MATCH (s:User {id: $id})-->(n:User) "
-                "RETURN n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->(n:User) " "RETURN n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_1_with_filter(self):
-        return ("MATCH (s:User {id: $id})-->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->(n:User) " "WHERE n.age >= 18 " "RETURN n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_2(self):
-        return ("MATCH (s:User {id: $id})-->()-->(n:User) "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->(n:User) " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_2_with_filter(self):
-        return ("MATCH (s:User {id: $id})-->()-->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->(n:User) " "WHERE n.age >= 18 " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_3(self):
-        return ("MATCH (s:User {id: $id})-->()-->()-->(n:User) "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->()-->(n:User) " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_3_with_filter(self):
-        return ("MATCH (s:User {id: $id})-->()-->()-->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->()-->(n:User) " "WHERE n.age >= 18 " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_4(self):
-        return ("MATCH (s:User {id: $id})-->()-->()-->()-->(n:User) "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->()-->()-->(n:User) " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__expansion_4_with_filter(self):
-        return ("MATCH (s:User {id: $id})-->()-->()-->()-->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-->()-->()-->()-->(n:User) " "WHERE n.age >= 18 " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__neighbours_2(self):
-        return ("MATCH (s:User {id: $id})-[*1..2]->(n:User) "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-[*1..2]->(n:User) " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__neighbours_2_with_filter(self):
-        return ("MATCH (s:User {id: $id})-[*1..2]->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN DISTINCT n.id",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-[*1..2]->(n:User) " "WHERE n.age >= 18 " "RETURN DISTINCT n.id",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__neighbours_2_with_data(self):
-        return ("MATCH (s:User {id: $id})-[*1..2]->(n:User) "
-                "RETURN DISTINCT n.id, n",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-[*1..2]->(n:User) " "RETURN DISTINCT n.id, n",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__neighbours_2_with_data_and_filter(self):
-        return ("MATCH (s:User {id: $id})-[*1..2]->(n:User) "
-                "WHERE n.age >= 18 "
-                "RETURN DISTINCT n.id, n",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (s:User {id: $id})-[*1..2]->(n:User) " "WHERE n.age >= 18 " "RETURN DISTINCT n.id, n",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__arango__shortest_path(self):
         vertex_from, vertex_to = self._get_random_from_to()
-        return ("MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m "
-                "MATCH p=(n)-[*bfs..15]->(m) "
-                "RETURN extract(n in nodes(p) | n.id) AS path",
-                {"from": vertex_from, "to": vertex_to})
+        return (
+            "MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m "
+            "MATCH p=(n)-[*bfs..15]->(m) "
+            "RETURN extract(n in nodes(p) | n.id) AS path",
+            {"from": vertex_from, "to": vertex_to},
+        )
 
     def benchmark__arango__shortest_path_with_filter(self):
         vertex_from, vertex_to = self._get_random_from_to()
-        return ("MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m "
-                "MATCH p=(n)-[*bfs..15 (e, n | n.age >= 18)]->(m) "
-                "RETURN extract(n in nodes(p) | n.id) AS path",
-                {"from": vertex_from, "to": vertex_to})
+        return (
+            "MATCH (n:User {id: $from}), (m:User {id: $to}) WITH n, m "
+            "MATCH p=(n)-[*bfs..15 (e, n | n.age >= 18)]->(m) "
+            "RETURN extract(n in nodes(p) | n.id) AS path",
+            {"from": vertex_from, "to": vertex_to},
+        )
 
     # Our benchmark queries
 
     def benchmark__create__edge(self):
         vertex_from, vertex_to = self._get_random_from_to()
-        return ("MATCH (a:User {id: $from}), (b:User {id: $to}) "
-                "CREATE (a)-[:TempEdge]->(b)",
-                {"from": vertex_from, "to": vertex_to})
+        return (
+            "MATCH (a:User {id: $from}), (b:User {id: $to}) " "CREATE (a)-[:TempEdge]->(b)",
+            {"from": vertex_from, "to": vertex_to},
+        )
 
     def benchmark__create__pattern(self):
         return ("CREATE ()-[:TempEdge]->()", {})
@@ -251,9 +259,12 @@ class Pokec(Dataset):
         return ("CREATE ()", {})
 
     def benchmark__create__vertex_big(self):
-        return ("CREATE (:L1:L2:L3:L4:L5:L6:L7 {p1: true, p2: 42, "
-                "p3: \"Here is some text that is not extremely short\", "
-                "p4:\"Short text\", p5: 234.434, p6: 11.11, p7: false})", {})
+        return (
+            "CREATE (:L1:L2:L3:L4:L5:L6:L7 {p1: true, p2: 42, "
+            'p3: "Here is some text that is not extremely short", '
+            'p4:"Short text", p5: 234.434, p6: 11.11, p7: false})',
+            {},
+        )
 
     def benchmark__aggregation__count(self):
         return ("MATCH (n) RETURN count(n), count(n.age)", {})
@@ -262,29 +273,31 @@ class Pokec(Dataset):
         return ("MATCH (n) RETURN min(n.age), max(n.age), avg(n.age)", {})
 
     def benchmark__match__pattern_cycle(self):
-        return ("MATCH (n:User {id: $id})-[e1]->(m)-[e2]->(n) "
-                "RETURN e1, m, e2",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (n:User {id: $id})-[e1]->(m)-[e2]->(n) " "RETURN e1, m, e2",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__match__pattern_long(self):
-        return ("MATCH (n1:User {id: $id})-[e1]->(n2)-[e2]->"
-                "(n3)-[e3]->(n4)<-[e4]-(n5) "
-                "RETURN n5 LIMIT 1",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (n1:User {id: $id})-[e1]->(n2)-[e2]->" "(n3)-[e3]->(n4)<-[e4]-(n5) " "RETURN n5 LIMIT 1",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__match__pattern_short(self):
-        return ("MATCH (n:User {id: $id})-[e]->(m) "
-                "RETURN m LIMIT 1",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (n:User {id: $id})-[e]->(m) " "RETURN m LIMIT 1",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__match__vertex_on_label_property(self):
-        return ("MATCH (n:User) WITH n WHERE n.id = $id RETURN n",
-                {"id": self._get_random_vertex()})
+        return (
+            "MATCH (n:User) WITH n WHERE n.id = $id RETURN n",
+            {"id": self._get_random_vertex()},
+        )
 
     def benchmark__match__vertex_on_label_property_index(self):
-        return ("MATCH (n:User {id: $id}) RETURN n",
-                {"id": self._get_random_vertex()})
+        return ("MATCH (n:User {id: $id}) RETURN n", {"id": self._get_random_vertex()})
 
     def benchmark__match__vertex_on_property(self):
-        return ("MATCH (n {id: $id}) RETURN n",
-                {"id": self._get_random_vertex()})
+        return ("MATCH (n {id: $id}) RETURN n", {"id": self._get_random_vertex()})

tests/mgbench/helpers.py

@@ -28,18 +28,21 @@ def get_binary_path(path, base=""):
 
 
 def download_file(url, path):
-    ret = subprocess.run(["wget", "-nv", "--content-disposition", url],
-                         stderr=subprocess.PIPE, cwd=path, check=True)
+    ret = subprocess.run(
+        ["wget", "-nv", "--content-disposition", url],
+        stderr=subprocess.PIPE,
+        cwd=path,
+        check=True,
+    )
     data = ret.stderr.decode("utf-8")
     tmp = data.split("->")[1]
-    name = tmp[tmp.index('"') + 1:tmp.rindex('"')]
+    name = tmp[tmp.index('"') + 1 : tmp.rindex('"')]
     return os.path.join(path, name)
 
 
 def unpack_and_move_file(input_path, output_path):
     if input_path.endswith(".gz"):
-        subprocess.run(["gunzip", input_path],
-                       stdout=subprocess.DEVNULL, check=True)
+        subprocess.run(["gunzip", input_path], stdout=subprocess.DEVNULL, check=True)
         input_path = input_path[:-3]
     os.rename(input_path, output_path)
 

tests/mgbench/runners.py

@@ -40,8 +40,7 @@ def _convert_args_to_flags(*args, **kwargs):
 def _get_usage(pid):
     total_cpu = 0
     with open("/proc/{}/stat".format(pid)) as f:
-        total_cpu = (sum(map(int, f.read().split(")")[1].split()[11:15])) /
-                     os.sysconf(os.sysconf_names["SC_CLK_TCK"]))
+        total_cpu = sum(map(int, f.read().split(")")[1].split()[11:15])) / os.sysconf(os.sysconf_names["SC_CLK_TCK"])
     peak_rss = 0
     with open("/proc/{}/status".format(pid)) as f:
         for row in f:
@@ -60,10 +59,8 @@ class Memgraph:
         atexit.register(self._cleanup)
 
         # Determine Memgraph version
-        ret = subprocess.run([memgraph_binary, "--version"],
-                             stdout=subprocess.PIPE, check=True)
-        version = re.search(r"[0-9]+\.[0-9]+\.[0-9]+",
-                            ret.stdout.decode("utf-8")).group(0)
+        ret = subprocess.run([memgraph_binary, "--version"], stdout=subprocess.PIPE, check=True)
+        version = re.search(r"[0-9]+\.[0-9]+\.[0-9]+", ret.stdout.decode("utf-8")).group(0)
         self._memgraph_version = tuple(map(int, version.split(".")))
 
     def __del__(self):
@@ -79,8 +76,7 @@ class Memgraph:
         if self._memgraph_version >= (0, 50, 0):
             kwargs["storage_properties_on_edges"] = self._properties_on_edges
         else:
-            assert self._properties_on_edges, \
-                "Older versions of Memgraph can't disable properties on edges!"
+            assert self._properties_on_edges, "Older versions of Memgraph can't disable properties on edges!"
         return _convert_args_to_flags(self._memgraph_binary, **kwargs)
 
     def _start(self, **kwargs):
@@ -94,8 +90,7 @@ class Memgraph:
             raise Exception("The database process died prematurely!")
         wait_for_server(7687)
         ret = self._proc_mg.poll()
-        assert ret is None, "The database process died prematurely " \
-            "({})!".format(ret)
+        assert ret is None, "The database process died prematurely " "({})!".format(ret)
 
     def _cleanup(self):
         if self._proc_mg is None:
@@ -121,8 +116,7 @@ class Memgraph:
 
     def stop(self):
         ret, usage = self._cleanup()
-        assert ret == 0, "The database process exited with a non-zero " \
-            "status ({})!".format(ret)
+        assert ret == 0, "The database process exited with a non-zero " "status ({})!".format(ret)
         return usage
 
 
@@ -135,8 +129,7 @@ class Client:
         return _convert_args_to_flags(self._client_binary, **kwargs)
 
     def execute(self, queries=None, file_path=None, num_workers=1):
-        if (queries is None and file_path is None) or \
-                (queries is not None and file_path is not None):
+        if (queries is None and file_path is None) or (queries is not None and file_path is not None):
             raise ValueError("Either queries or input_path must be specified!")
 
         # TODO: check `file_path.endswith(".json")` to support advanced
@@ -151,8 +144,7 @@ class Client:
                     json.dump(query, f)
                     f.write("\n")
 
-        args = self._get_args(input=file_path, num_workers=num_workers,
-                              queries_json=queries_json)
+        args = self._get_args(input=file_path, num_workers=num_workers, queries_json=queries_json)
         ret = subprocess.run(args, stdout=subprocess.PIPE, check=True)
         data = ret.stdout.decode("utf-8").strip().split("\n")
         return list(map(json.loads, data))

tests/stress/bipartite.py

@@ -12,44 +12,60 @@
 # by the Apache License, Version 2.0, included in the file
 # licenses/APL.txt.
 
-'''
+"""
 Large bipartite graph stress test.
-'''
+"""
 
 import logging
 import multiprocessing
 import time
 import atexit
 
-from common import connection_argument_parser, assert_equal, \
-                   OutputData, execute_till_success, \
-                   batch, render, SessionCache
+from common import (
+    connection_argument_parser,
+    assert_equal,
+    OutputData,
+    execute_till_success,
+    batch,
+    render,
+    SessionCache,
+)
 
 
 def parse_args():
-    '''
+    """
     Parses user arguments
 
     :return: parsed arguments
-    '''
+    """
     parser = connection_argument_parser()
-    parser.add_argument('--worker-count', type=int,
-                        default=multiprocessing.cpu_count(),
-                        help='Number of concurrent workers.')
-    parser.add_argument("--logging", default="INFO",
-                        choices=["INFO", "DEBUG", "WARNING", "ERROR"],
-                        help="Logging level")
-    parser.add_argument('--u-count', type=int, default=100,
-                        help='Size of U set in the bipartite graph.')
-    parser.add_argument('--v-count', type=int, default=100,
-                        help='Size of V set in the bipartite graph.')
-    parser.add_argument('--vertex-batch-size', type=int, default=100,
-                        help="Create vertices in batches of this size.")
-    parser.add_argument('--edge-batching', action='store_true',
-                        help='Create edges in batches.')
-    parser.add_argument('--edge-batch-size', type=int, default=100,
-                        help='Number of edges in a batch when edges '
-                             'are created in batches.')
+    parser.add_argument(
+        "--worker-count",
+        type=int,
+        default=multiprocessing.cpu_count(),
+        help="Number of concurrent workers.",
+    )
+    parser.add_argument(
+        "--logging",
+        default="INFO",
+        choices=["INFO", "DEBUG", "WARNING", "ERROR"],
+        help="Logging level",
+    )
+    parser.add_argument("--u-count", type=int, default=100, help="Size of U set in the bipartite graph.")
+    parser.add_argument("--v-count", type=int, default=100, help="Size of V set in the bipartite graph.")
+    parser.add_argument(
+        "--vertex-batch-size",
+        type=int,
+        default=100,
+        help="Create vertices in batches of this size.",
+    )
+    parser.add_argument("--edge-batching", action="store_true", help="Create edges in batches.")
+    parser.add_argument(
+        "--edge-batch-size",
+        type=int,
+        default=100,
+        help="Number of edges in a batch when edges " "are created in batches.",
+    )
     return parser.parse_args()
 
 
@@ -62,18 +78,18 @@ atexit.register(SessionCache.cleanup)
 
 
 def create_u_v_edges(u):
-    '''
+    """
     Creates nodes and checks that all nodes were created.
     create edges from one vertex in U set to all vertex of V set
 
     :param worker_id: worker id
 
     :return: tuple (worker_id, create execution time, time unit)
-    '''
+    """
     start_time = time.time()
     session = SessionCache.argument_session(args)
     no_failures = 0
-    match_u = 'MATCH (u:U {id: %d})' % u
+    match_u = "MATCH (u:U {id: %d})" % u
     if args.edge_batching:
         # TODO: try to randomize execution, the execution time should
         # be smaller, add randomize flag
@@ -83,143 +99,126 @@ def create_u_v_edges(u):
             query = match_u + "".join(match_v) + "".join(create_u)
             no_failures += execute_till_success(session, query)[1]
     else:
-        no_failures += execute_till_success(
-            session, match_u + ' MATCH (v:V) CREATE (u)-[:R]->(v)')[1]
+        no_failures += execute_till_success(session, match_u + " MATCH (v:V) CREATE (u)-[:R]->(v)")[1]
 
     end_time = time.time()
     return u, end_time - start_time, "s", no_failures
 
 
 def traverse_from_u_worker(u):
-    '''
+    """
     Traverses edges starting from an element of U set.
     Traversed labels are: :U -> :V -> :U.
-    '''
+    """
     session = SessionCache.argument_session(args)
     start_time = time.time()
     assert_equal(
         args.u_count * args.v_count - args.v_count,  # cypher morphism
-        session.run("MATCH (u1:U {id: %s})-[e1]->(v:V)<-[e2]-(u2:U) "
-                    "RETURN count(v) AS cnt" % u).data()[0]['cnt'],
-        "Number of traversed edges started "
-        "from U(id:%s) is wrong!. " % u +
-        "Expected: %s Actual: %s")
+        session.run("MATCH (u1:U {id: %s})-[e1]->(v:V)<-[e2]-(u2:U) " "RETURN count(v) AS cnt" % u).data()[0]["cnt"],
+        "Number of traversed edges started " "from U(id:%s) is wrong!. " % u + "Expected: %s Actual: %s",
+    )
     end_time = time.time()
-    return u, end_time - start_time, 's'
+    return u, end_time - start_time, "s"
 
 
 def traverse_from_v_worker(v):
-    '''
+    """
     Traverses edges starting from an element of V set.
     Traversed labels are: :V -> :U -> :V.
-    '''
+    """
     session = SessionCache.argument_session(args)
     start_time = time.time()
     assert_equal(
-       args.u_count * args.v_count - args.u_count,  # cypher morphism
-       session.run("MATCH (v1:V {id: %s})<-[e1]-(u:U)-[e2]->(v2:V) "
-                   "RETURN count(u) AS cnt" % v).data()[0]['cnt'],
-       "Number of traversed edges started "
-       "from V(id:%s) is wrong!. " % v +
-       "Expected: %s Actual: %s")
+        args.u_count * args.v_count - args.u_count,  # cypher morphism
+        session.run("MATCH (v1:V {id: %s})<-[e1]-(u:U)-[e2]->(v2:V) " "RETURN count(u) AS cnt" % v).data()[0]["cnt"],
+        "Number of traversed edges started " "from V(id:%s) is wrong!. " % v + "Expected: %s Actual: %s",
+    )
     end_time = time.time()
-    return v, end_time - start_time, 's'
+    return v, end_time - start_time, "s"
 
 
 def execution_handler():
-    '''
+    """
     Initializes client processes, database and starts the execution.
-    '''
+    """
     # instance cleanup
     session = SessionCache.argument_session(args)
     start_time = time.time()
 
     # clean existing database
-    session.run('MATCH (n) DETACH DELETE n').consume()
+    session.run("MATCH (n) DETACH DELETE n").consume()
     cleanup_end_time = time.time()
-    output_data.add_measurement("cleanup_time",
-                                cleanup_end_time - start_time)
+    output_data.add_measurement("cleanup_time", cleanup_end_time - start_time)
     log.info("Database is clean.")
 
     # create indices
-    session.run('CREATE INDEX ON :U').consume()
-    session.run('CREATE INDEX ON :V').consume()
+    session.run("CREATE INDEX ON :U").consume()
+    session.run("CREATE INDEX ON :V").consume()
 
     # create U vertices
-    for b in batch(render('CREATE (:U {{id: {}}})', range(args.u_count)),
-                   args.vertex_batch_size):
+    for b in batch(render("CREATE (:U {{id: {}}})", range(args.u_count)), args.vertex_batch_size):
         session.run(" ".join(b)).consume()
     # create V vertices
-    for b in batch(render('CREATE (:V {{id: {}}})', range(args.v_count)),
-                   args.vertex_batch_size):
+    for b in batch(render("CREATE (:V {{id: {}}})", range(args.v_count)), args.vertex_batch_size):
         session.run(" ".join(b)).consume()
     vertices_create_end_time = time.time()
-    output_data.add_measurement(
-        'vertices_create_time',
-        vertices_create_end_time - cleanup_end_time)
+    output_data.add_measurement("vertices_create_time", vertices_create_end_time - cleanup_end_time)
     log.info("All nodes created.")
 
     # concurrent create execution & tests
     with multiprocessing.Pool(args.worker_count) as p:
         create_edges_start_time = time.time()
-        for worker_id, create_time, time_unit, no_failures in \
-                p.map(create_u_v_edges, [i for i in range(args.u_count)]):
-            log.info('Worker ID: %s; Create time: %s%s Failures: %s' %
-                     (worker_id, create_time, time_unit, no_failures))
+        for worker_id, create_time, time_unit, no_failures in p.map(create_u_v_edges, [i for i in range(args.u_count)]):
+            log.info("Worker ID: %s; Create time: %s%s Failures: %s" % (worker_id, create_time, time_unit, no_failures))
         create_edges_end_time = time.time()
-        output_data.add_measurement(
-            'edges_create_time',
-            create_edges_end_time - create_edges_start_time)
+        output_data.add_measurement("edges_create_time", create_edges_end_time - create_edges_start_time)
 
         # check total number of edges
         assert_equal(
             args.v_count * args.u_count,
-            session.run(
-                'MATCH ()-[r]->() '
-                'RETURN count(r) AS cnt').data()[0]['cnt'],
-            "Total number of edges isn't correct! Expected: %s Actual: %s")
+            session.run("MATCH ()-[r]->() " "RETURN count(r) AS cnt").data()[0]["cnt"],
+            "Total number of edges isn't correct! Expected: %s Actual: %s",
+        )
 
         # check traversals starting from all elements of U
         traverse_from_u_start_time = time.time()
-        for u, traverse_u_time, time_unit in \
-                p.map(traverse_from_u_worker,
-                      [i for i in range(args.u_count)]):
+        for u, traverse_u_time, time_unit in p.map(traverse_from_u_worker, [i for i in range(args.u_count)]):
             log.info("U {id: %s} %s%s" % (u, traverse_u_time, time_unit))
         traverse_from_u_end_time = time.time()
         output_data.add_measurement(
-            'traverse_from_u_time',
-            traverse_from_u_end_time - traverse_from_u_start_time)
+            "traverse_from_u_time",
+            traverse_from_u_end_time - traverse_from_u_start_time,
+        )
 
         # check traversals starting from all elements of V
         traverse_from_v_start_time = time.time()
-        for v, traverse_v_time, time_unit in \
-                p.map(traverse_from_v_worker,
-                      [i for i in range(args.v_count)]):
+        for v, traverse_v_time, time_unit in p.map(traverse_from_v_worker, [i for i in range(args.v_count)]):
             log.info("V {id: %s} %s%s" % (v, traverse_v_time, time_unit))
         traverse_from_v_end_time = time.time()
         output_data.add_measurement(
-            'traverse_from_v_time',
-            traverse_from_v_end_time - traverse_from_v_start_time)
+            "traverse_from_v_time",
+            traverse_from_v_end_time - traverse_from_v_start_time,
+        )
 
     # check total number of vertices
     assert_equal(
         args.v_count + args.u_count,
-        session.run('MATCH (n) RETURN count(n) AS cnt').data()[0]['cnt'],
-        "Total number of vertices isn't correct! Expected: %s Actual: %s")
+        session.run("MATCH (n) RETURN count(n) AS cnt").data()[0]["cnt"],
+        "Total number of vertices isn't correct! Expected: %s Actual: %s",
+    )
 
     # check total number of edges
     assert_equal(
         args.v_count * args.u_count,
-        session.run(
-            'MATCH ()-[r]->() RETURN count(r) AS cnt').data()[0]['cnt'],
-        "Total number of edges isn't correct! Expected: %s Actual: %s")
+        session.run("MATCH ()-[r]->() RETURN count(r) AS cnt").data()[0]["cnt"],
+        "Total number of edges isn't correct! Expected: %s Actual: %s",
+    )
 
     end_time = time.time()
-    output_data.add_measurement("total_execution_time",
-                                end_time - start_time)
+    output_data.add_measurement("total_execution_time", end_time - start_time)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     logging.basicConfig(level=args.logging)
     if args.logging != "DEBUG":
         logging.getLogger("neo4j").setLevel(logging.WARNING)

tests/stress/common.py

@@ -11,12 +11,12 @@
 
 # -*- coding: utf-8 -*-
 
-'''
+"""
 Common methods for writing graph database
 integration tests in python.
 
 Only Bolt communication protocol is supported.
-'''
+"""
 
 import contextlib
 import os
@@ -28,9 +28,9 @@ from neo4j import GraphDatabase, TRUST_ALL_CERTIFICATES
 
 
 class OutputData:
-    '''
+    """
     Encapsulates results and info about the tests.
-    '''
+    """
 
     def __init__(self):
         # data in time format (name, time, unit)
@@ -39,32 +39,32 @@ class OutputData:
         self._statuses = []
 
     def add_measurement(self, name, time, unit="s"):
-        '''
+        """
         Stores measurement.
 
         :param name: str, name of measurement
         :param time: float, time value
         :param unit: str, time unit
-        '''
+        """
         self._measurements.append((name, time, unit))
 
     def add_status(self, name, status):
-        '''
+        """
         Stores status data point.
 
         :param name: str, name of data point
         :param status: printable value
-        '''
+        """
         self._statuses.append((name, status))
 
     def dump(self, print_f=print):
-        '''
+        """
         Dumps output using the given ouput function.
 
         Args:
             print_f - the function that consumes ouptput. Defaults to
             the 'print' function.
-        '''
+        """
         print_f("Output data:")
         for name, status in self._statuses:
             print_f("    %s: %s" % (name, status))
@@ -73,7 +73,7 @@ class OutputData:
 
 
 def execute_till_success(session, query, max_retries=1000):
-    '''
+    """
     Executes a query within Bolt session until the query is
     successfully executed against the database.
 
@@ -86,7 +86,7 @@ def execute_till_success(session, query, max_retries=1000):
     :param query: query to execute
 
     :return: tuple (results_data_list, number_of_failures, result_summary)
-    '''
+    """
     no_failures = 0
     while True:
         try:
@@ -97,12 +97,11 @@ def execute_till_success(session, query, max_retries=1000):
         except Exception:
             no_failures += 1
             if no_failures >= max_retries:
-                raise Exception("Query '%s' failed %d times, aborting" %
-                                (query, max_retries))
+                raise Exception("Query '%s' failed %d times, aborting" % (query, max_retries))
 
 
 def batch(input, batch_size):
-    """ Batches the given input (must be iterable).
+    """Batches the given input (must be iterable).
     Supports input generators. Returns a generator.
     All is lazy. The last batch can contain less elements
     then `batch_size`, but is for sure more then zero.
@@ -134,7 +133,7 @@ def render(template, iterable_arguments):
 
 
 def assert_equal(expected, actual, message):
-    '''
+    """
     Compares expected and actual values. If values are not the same terminate
     the execution.
 
@@ -142,45 +141,41 @@ def assert_equal(expected, actual, message):
     :param actual: actual value
     :param message: str, message in case that the values are not equal, must
                     contain two placeholders (%s) to print the values.
-    '''
+    """
     assert expected == actual, message % (expected, actual)
 
 
 def connection_argument_parser():
-    '''
+    """
     Parses arguments related to establishing database connection like
     host, port, username, etc.
 
     :return: An instance of ArgumentParser
-    '''
+    """
     parser = ArgumentParser(description=__doc__)
 
-    parser.add_argument('--endpoint', type=str, default='127.0.0.1:7687',
-                        help='DBMS instance endpoint. '
-                             'Bolt protocol is the only option.')
-    parser.add_argument('--username', type=str, default='neo4j',
-                        help='DBMS instance username.')
-    parser.add_argument('--password', type=int, default='1234',
-                        help='DBMS instance password.')
-    parser.add_argument('--use-ssl', action='store_true',
-                        help="Is SSL enabled?")
+    parser.add_argument(
+        "--endpoint",
+        type=str,
+        default="127.0.0.1:7687",
+        help="DBMS instance endpoint. " "Bolt protocol is the only option.",
+    )
+    parser.add_argument("--username", type=str, default="neo4j", help="DBMS instance username.")
+    parser.add_argument("--password", type=int, default="1234", help="DBMS instance password.")
+    parser.add_argument("--use-ssl", action="store_true", help="Is SSL enabled?")
     return parser
 
 
 @contextlib.contextmanager
 def bolt_session(url, auth, ssl=False):
-    '''
+    """
     with wrapper around Bolt session.
 
     :param url: str, e.g. "bolt://127.0.0.1:7687"
     :param auth: auth method, goes directly to the Bolt driver constructor
     :param ssl: bool, is ssl enabled
-    '''
-    driver = GraphDatabase.driver(
-        url,
-        auth=auth,
-        encrypted=ssl,
-        trust=TRUST_ALL_CERTIFICATES)
+    """
+    driver = GraphDatabase.driver(url, auth=auth, encrypted=ssl, trust=TRUST_ALL_CERTIFICATES)
     session = driver.session()
     try:
         yield session
@@ -192,19 +187,20 @@ def bolt_session(url, auth, ssl=False):
 # If you are using session with multiprocessing take a look at SesssionCache
 # in bipartite for an idea how to reuse sessions.
 def argument_session(args):
-    '''
+    """
     :return: Bolt session context manager based on program arguments
-    '''
-    return bolt_session('bolt://' + args.endpoint,
-                        (args.username, str(args.password)),
-                        args.use_ssl)
+    """
+    return bolt_session("bolt://" + args.endpoint, (args.username, str(args.password)), args.use_ssl)
 
 
 def argument_driver(args):
     return GraphDatabase.driver(
-        'bolt://' + args.endpoint,
+        "bolt://" + args.endpoint,
         auth=(args.username, str(args.password)),
-        encrypted=args.use_ssl, trust=TRUST_ALL_CERTIFICATES)
+        encrypted=args.use_ssl,
+        trust=TRUST_ALL_CERTIFICATES,
+    )
+
 
 # This class is used to create and cache sessions. Session is cached by args
 # used to create it and process' pid in which it was created. This makes it
@@ -219,8 +215,8 @@ class SessionCache:
         key = tuple(vars(args).items()) + (os.getpid(),)
         if key in SessionCache.cache:
             return SessionCache.cache[key][1]
-        driver = argument_driver(args)   # |
-        session = driver.session()       # V
+        driver = argument_driver(args)  # |
+        session = driver.session()  # V
         SessionCache.cache[key] = (driver, session)
         return session
 
@@ -241,6 +237,7 @@ def periodically_execute(callable, args, interval, daemon=True):
         interval - time (in seconds) between two calls
         deamon - if the execution thread should be a daemon
     """
+
     def periodic_call():
         while True:
             sleep(interval)

tests/stress/create_match.py

@@ -12,11 +12,11 @@
 # by the Apache License, Version 2.0, included in the file
 # licenses/APL.txt.
 
-'''
+"""
 Large scale stress test. Tests only node creation.
 
 The idea is to run this test on machines with huge amount of memory e.g. 2TB.
-'''
+"""
 
 import logging
 import multiprocessing
@@ -28,28 +28,41 @@ from common import connection_argument_parser, argument_session
 
 
 def parse_args():
-    '''
+    """
     Parses user arguments
 
     :return: parsed arguments
-    '''
+    """
     parser = connection_argument_parser()
 
     # specific
-    parser.add_argument('--worker-count', type=int,
-                        default=multiprocessing.cpu_count(),
-                        help='Number of concurrent workers.')
-    parser.add_argument("--logging", default="INFO",
-                        choices=["INFO", "DEBUG", "WARNING", "ERROR"],
-                        help="Logging level")
-    parser.add_argument('--vertex-count', type=int, default=100,
-                        help='Number of created vertices.')
-    parser.add_argument('--max-property-value', type=int, default=1000,
-                        help='Maximum value of property - 1. A created node '
-                        'will have a property with random value from 0 to '
-                        'max_property_value - 1.')
-    parser.add_argument('--create-pack-size', type=int, default=1,
-                        help='Number of CREATE clauses in a query')
+    parser.add_argument(
+        "--worker-count",
+        type=int,
+        default=multiprocessing.cpu_count(),
+        help="Number of concurrent workers.",
+    )
+    parser.add_argument(
+        "--logging",
+        default="INFO",
+        choices=["INFO", "DEBUG", "WARNING", "ERROR"],
+        help="Logging level",
+    )
+    parser.add_argument("--vertex-count", type=int, default=100, help="Number of created vertices.")
+    parser.add_argument(
+        "--max-property-value",
+        type=int,
+        default=1000,
+        help="Maximum value of property - 1. A created node "
+        "will have a property with random value from 0 to "
+        "max_property_value - 1.",
+    )
+    parser.add_argument(
+        "--create-pack-size",
+        type=int,
+        default=1,
+        help="Number of CREATE clauses in a query",
+    )
     return parser.parse_args()
 
 
@@ -58,51 +71,49 @@ args = parse_args()
 
 
 def create_worker(worker_id):
-    '''
+    """
     Creates nodes and checks that all nodes were created.
 
     :param worker_id: worker id
 
     :return: tuple (worker_id, create execution time, time unit)
-    '''
-    assert args.vertex_count > 0, 'Number of vertices has to be positive int'
+    """
+    assert args.vertex_count > 0, "Number of vertices has to be positive int"
 
     generated_xs = defaultdict(int)
-    create_query = ''
+    create_query = ""
     with argument_session(args) as session:
         # create vertices
         start_time = time.time()
         for i in range(0, args.vertex_count):
             random_number = random.randint(0, args.max_property_value - 1)
             generated_xs[random_number] += 1
-            create_query += 'CREATE (:Label_T%s {x: %s}) ' % \
-                            (worker_id, random_number)
+            create_query += "CREATE (:Label_T%s {x: %s}) " % (worker_id, random_number)
             # if full back or last item -> execute query
-            if (i + 1) % args.create_pack_size == 0 or \
-                    i == args.vertex_count - 1:
+            if (i + 1) % args.create_pack_size == 0 or i == args.vertex_count - 1:
                 session.run(create_query).consume()
-                create_query = ''
+                create_query = ""
         create_time = time.time()
         # check total count
-        result_set = session.run('MATCH (n:Label_T%s) RETURN count(n) AS cnt' %
-                                 worker_id).data()[0]
-        assert result_set['cnt'] == args.vertex_count, \
-            'Create vertices Expected: %s Created: %s' % \
-            (args.vertex_count, result_set['cnt'])
+        result_set = session.run("MATCH (n:Label_T%s) RETURN count(n) AS cnt" % worker_id).data()[0]
+        assert result_set["cnt"] == args.vertex_count, "Create vertices Expected: %s Created: %s" % (
+            args.vertex_count,
+            result_set["cnt"],
+        )
         # check count per property value
         for i, size in generated_xs.items():
-            result_set = session.run('MATCH (n:Label_T%s {x: %s}) '
-                                     'RETURN count(n) AS cnt'
-                                     % (worker_id, i)).data()[0]
-            assert result_set['cnt'] == size, "Per x count isn't good " \
-                "(Label: Label_T%s, prop x: %s" % (worker_id, i)
+            result_set = session.run("MATCH (n:Label_T%s {x: %s}) " "RETURN count(n) AS cnt" % (worker_id, i)).data()[0]
+            assert result_set["cnt"] == size, "Per x count isn't good " "(Label: Label_T%s, prop x: %s" % (
+                worker_id,
+                i,
+            )
         return (worker_id, create_time - start_time, "s")
 
 
 def create_handler():
-    '''
+    """
     Initializes processes and starts the execution.
-    '''
+    """
     # instance cleanup
     with argument_session(args) as session:
         session.run("MATCH (n) DETACH DELETE n").consume()
@@ -113,21 +124,19 @@ def create_handler():
 
         # concurrent create execution & tests
         with multiprocessing.Pool(args.worker_count) as p:
-            for worker_id, create_time, time_unit in \
-                    p.map(create_worker, [i for i in range(args.worker_count)]):
-                log.info('Worker ID: %s; Create time: %s%s' %
-                         (worker_id, create_time, time_unit))
+            for worker_id, create_time, time_unit in p.map(create_worker, [i for i in range(args.worker_count)]):
+                log.info("Worker ID: %s; Create time: %s%s" % (worker_id, create_time, time_unit))
 
         # check total count
         expected_total_count = args.worker_count * args.vertex_count
-        total_count = session.run(
-            'MATCH (n) RETURN count(n) AS cnt').data()[0]['cnt']
-        assert total_count == expected_total_count, \
-            'Total vertex number: %s Expected: %s' % \
-            (total_count, expected_total_count)
+        total_count = session.run("MATCH (n) RETURN count(n) AS cnt").data()[0]["cnt"]
+        assert total_count == expected_total_count, "Total vertex number: %s Expected: %s" % (
+            total_count,
+            expected_total_count,
+        )
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     logging.basicConfig(level=args.logging)
     if args.logging != "DEBUG":
         logging.getLogger("neo4j").setLevel(logging.WARNING)

tools/bench-graph-client/main.py

@@ -20,9 +20,7 @@ GITHUB_REPOSITORY = os.getenv("GITHUB_REPOSITORY", "")
 GITHUB_SHA = os.getenv("GITHUB_SHA", "")
 GITHUB_REF = os.getenv("GITHUB_REF", "")
 
-BENCH_GRAPH_SERVER_ENDPOINT = os.getenv(
-    "BENCH_GRAPH_SERVER_ENDPOINT",
-    "http://bench-graph-api:9001")
+BENCH_GRAPH_SERVER_ENDPOINT = os.getenv("BENCH_GRAPH_SERVER_ENDPOINT", "http://bench-graph-api:9001")
 
 log = logging.getLogger(__name__)
 
@@ -52,12 +50,12 @@ def post_measurement(args):
                 "github_run_id": args.github_run_id,
                 "github_run_number": args.github_run_number,
                 "results": data,
-                "git_branch": args.head_branch_name},
-            timeout=1)
-        assert req.status_code == 200, \
-            f"Uploading {args.benchmark_name} data failed."
-        log.info(f"{args.benchmark_name} data sent to "
-                 f"{BENCH_GRAPH_SERVER_ENDPOINT}")
+                "git_branch": args.head_branch_name,
+            },
+            timeout=1,
+        )
+        assert req.status_code == 200, f"Uploading {args.benchmark_name} data failed."
+        log.info(f"{args.benchmark_name} data sent to " f"{BENCH_GRAPH_SERVER_ENDPOINT}")
 
 
 if __name__ == "__main__":

tools/gdb-plugins/operator_tree.py

@@ -4,14 +4,14 @@ import gdb
 
 
 def _logical_operator_type():
-    '''Returns the LogicalOperator gdb.Type'''
+    """Returns the LogicalOperator gdb.Type"""
     # This is a function, because the type may appear during gdb runtime.
     # Therefore, we cannot assign it on import.
-    return gdb.lookup_type('memgraph::query::plan::LogicalOperator')
+    return gdb.lookup_type("memgraph::query::plan::LogicalOperator")
 
 
 def _iter_fields_and_base_classes(value):
-    '''Iterate all fields of value.type'''
+    """Iterate all fields of value.type"""
     types_to_process = [value.type]
     while types_to_process:
         for field in types_to_process.pop().fields():
@@ -21,31 +21,27 @@ def _iter_fields_and_base_classes(value):
 
 
 def _fields(value):
-    '''Return a list of value.type fields.'''
-    return [f for f in _iter_fields_and_base_classes(value)
-            if not f.is_base_class]
+    """Return a list of value.type fields."""
+    return [f for f in _iter_fields_and_base_classes(value) if not f.is_base_class]
 
 
 def _has_field(value, field_name):
-    '''Return True if value.type has a field named field_name.'''
+    """Return True if value.type has a field named field_name."""
     return field_name in [f.name for f in _fields(value)]
 
 
 def _base_classes(value):
-    '''Return a list of base classes for value.type.'''
-    return [f for f in _iter_fields_and_base_classes(value)
-            if f.is_base_class]
+    """Return a list of base classes for value.type."""
+    return [f for f in _iter_fields_and_base_classes(value) if f.is_base_class]
 
 
 def _is_instance(value, type_):
-    '''Return True if value is an instance of type.'''
-    return value.type.unqualified() == type_ or \
-            type_ in [base.type for base in _base_classes(value)]
+    """Return True if value is an instance of type."""
+    return value.type.unqualified() == type_ or type_ in [base.type for base in _base_classes(value)]
 
 
 # Pattern for matching std::unique_ptr<T, Deleter> and std::shared_ptr<T>
-_SMART_PTR_TYPE_PATTERN = \
-        re.compile('^std::(unique|shared)_ptr<(?P<pointee_type>[\w:]*)')
+_SMART_PTR_TYPE_PATTERN = re.compile("^std::(unique|shared)_ptr<(?P<pointee_type>[\w:]*)")
 
 
 def _is_smart_ptr(maybe_smart_ptr, type_name=None):
@@ -55,40 +51,39 @@ def _is_smart_ptr(maybe_smart_ptr, type_name=None):
     match = _SMART_PTR_TYPE_PATTERN.match(type_.name)
     if match is None or type_name is None:
         return bool(match)
-    return type_name == match.group('pointee_type')
+    return type_name == match.group("pointee_type")
 
 
 def _smart_ptr_pointee(smart_ptr):
-    '''Returns the pointer to object in shared_ptr/unique_ptr.'''
+    """Returns the pointer to object in shared_ptr/unique_ptr."""
     # This function may not be needed when gdb adds dereferencing
     # shared_ptr/unique_ptr via Python API.
-    if _has_field(smart_ptr, '_M_ptr'):
+    if _has_field(smart_ptr, "_M_ptr"):
         # shared_ptr
-        return smart_ptr['_M_ptr']
-    if _has_field(smart_ptr, '_M_t'):
+        return smart_ptr["_M_ptr"]
+    if _has_field(smart_ptr, "_M_t"):
         # unique_ptr
-        smart_ptr = smart_ptr['_M_t']
-        if _has_field(smart_ptr, '_M_t'):
+        smart_ptr = smart_ptr["_M_t"]
+        if _has_field(smart_ptr, "_M_t"):
             # Check for one more level of _M_t
-            smart_ptr = smart_ptr['_M_t']
-        if _has_field(smart_ptr, '_M_head_impl'):
-            return smart_ptr['_M_head_impl']
+            smart_ptr = smart_ptr["_M_t"]
+        if _has_field(smart_ptr, "_M_head_impl"):
+            return smart_ptr["_M_head_impl"]
 
 
 def _get_operator_input(operator):
-    '''Returns the input operator of given operator, if it has any.'''
-    if not _has_field(operator, 'input_'):
+    """Returns the input operator of given operator, if it has any."""
+    if not _has_field(operator, "input_"):
         return None
-    input_op = _smart_ptr_pointee(operator['input_']).dereference()
+    input_op = _smart_ptr_pointee(operator["input_"]).dereference()
     return input_op.cast(input_op.dynamic_type)
 
 
 class PrintOperatorTree(gdb.Command):
-    '''Print the tree of logical operators from the expression.'''
+    """Print the tree of logical operators from the expression."""
+
     def __init__(self):
-        super(PrintOperatorTree, self).__init__("print-operator-tree",
-                                                gdb.COMMAND_USER,
-                                                gdb.COMPLETE_EXPRESSION)
+        super(PrintOperatorTree, self).__init__("print-operator-tree", gdb.COMMAND_USER, gdb.COMPLETE_EXPRESSION)
 
     def invoke(self, argument, from_tty):
         try:
@@ -98,17 +93,16 @@ class PrintOperatorTree(gdb.Command):
         logical_operator_type = _logical_operator_type()
         if operator.type.code in (gdb.TYPE_CODE_PTR, gdb.TYPE_CODE_REF):
             operator = operator.referenced_value()
-        if _is_smart_ptr(operator, 'memgraph::query::plan::LogicalOperator'):
+        if _is_smart_ptr(operator, "memgraph::query::plan::LogicalOperator"):
             operator = _smart_ptr_pointee(operator).dereference()
         if not _is_instance(operator, logical_operator_type):
-            raise gdb.GdbError("Expected a '%s', but got '%s'" %
-                               (logical_operator_type, operator.type))
+            raise gdb.GdbError("Expected a '%s', but got '%s'" % (logical_operator_type, operator.type))
         next_op = operator.cast(operator.dynamic_type)
         tree = []
         while next_op is not None:
-            tree.append('* %s <%s>' % (next_op.type.name, next_op.address))
+            tree.append("* %s <%s>" % (next_op.type.name, next_op.address))
             next_op = _get_operator_input(next_op)
-        print('\n'.join(tree))
+        print("\n".join(tree))
 
 
 PrintOperatorTree()

tools/gdb-plugins/pretty_printers.py

@@ -3,43 +3,49 @@ import gdb.printing
 
 
 def build_memgraph_pretty_printers():
-    '''Instantiate and return all memgraph pretty printer classes.'''
-    pp = gdb.printing.RegexpCollectionPrettyPrinter('memgraph')
-    pp.add_printer('memgraph::query::TypedValue', '^memgraph::query::TypedValue$', TypedValuePrinter)
+    """Instantiate and return all memgraph pretty printer classes."""
+    pp = gdb.printing.RegexpCollectionPrettyPrinter("memgraph")
+    pp.add_printer(
+        "memgraph::query::TypedValue",
+        "^memgraph::query::TypedValue$",
+        TypedValuePrinter,
+    )
     return pp
 
 
 class TypedValuePrinter(gdb.printing.PrettyPrinter):
-    '''Pretty printer for memgraph::query::TypedValue'''
+    """Pretty printer for memgraph::query::TypedValue"""
+
     def __init__(self, val):
-        super(TypedValuePrinter, self).__init__('TypedValue')
+        super(TypedValuePrinter, self).__init__("TypedValue")
         self.val = val
 
     def to_string(self):
         def _to_str(val):
-            return '{%s %s}' % (value_type, self.val[val])
-        value_type = str(self.val['type_'])
-        if value_type == 'memgraph::query::TypedValue::Type::Null':
-            return '{%s}' % value_type
-        elif value_type == 'memgraph::query::TypedValue::Type::Bool':
-            return _to_str('bool_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Int':
-            return _to_str('int_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Double':
-            return _to_str('double_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::String':
-            return _to_str('string_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::List':
-            return _to_str('list_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Map':
-            return _to_str('map_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Vertex':
-            return _to_str('vertex_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Edge':
-            return _to_str('edge_v')
-        elif value_type == 'memgraph::query::TypedValue::Type::Path':
-            return _to_str('path_v')
-        return '{%s}' % value_type
+            return "{%s %s}" % (value_type, self.val[val])
 
-gdb.printing.register_pretty_printer(None, build_memgraph_pretty_printers(),
-                                     replace=True)
+        value_type = str(self.val["type_"])
+        if value_type == "memgraph::query::TypedValue::Type::Null":
+            return "{%s}" % value_type
+        elif value_type == "memgraph::query::TypedValue::Type::Bool":
+            return _to_str("bool_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Int":
+            return _to_str("int_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Double":
+            return _to_str("double_v")
+        elif value_type == "memgraph::query::TypedValue::Type::String":
+            return _to_str("string_v")
+        elif value_type == "memgraph::query::TypedValue::Type::List":
+            return _to_str("list_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Map":
+            return _to_str("map_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Vertex":
+            return _to_str("vertex_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Edge":
+            return _to_str("edge_v")
+        elif value_type == "memgraph::query::TypedValue::Type::Path":
+            return _to_str("path_v")
+        return "{%s}" % value_type
+
+
+gdb.printing.register_pretty_printer(None, build_memgraph_pretty_printers(), replace=True)

tools/github/clang-tidy/clang-tidy-diff.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
 #
-#===- clang-tidy-diff.py - ClangTidy Diff Checker -----------*- python -*--===#
+# ===- clang-tidy-diff.py - ClangTidy Diff Checker -----------*- python -*--===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
-#===-----------------------------------------------------------------------===#
+# ===-----------------------------------------------------------------------===#
 
 r"""
 ClangTidy Diff Checker
@@ -37,11 +37,11 @@ import threading
 import traceback
 
 try:
-  import yaml
+    import yaml
 except ImportError:
-  yaml = None
+    yaml = None
 
-is_py2 = sys.version[0] == '2'
+is_py2 = sys.version[0] == "2"
 
 if is_py2:
     import Queue as queue
@@ -50,220 +50,242 @@ else:
 
 
 def run_tidy(task_queue, lock, timeout):
-  watchdog = None
-  while True:
-    command = task_queue.get()
-    try:
-      proc = subprocess.Popen(command,
-                              stdout=subprocess.PIPE,
-                              stderr=subprocess.PIPE)
+    watchdog = None
+    while True:
+        command = task_queue.get()
+        try:
+            proc = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 
-      if timeout is not None:
-        watchdog = threading.Timer(timeout, proc.kill)
-        watchdog.start()
+            if timeout is not None:
+                watchdog = threading.Timer(timeout, proc.kill)
+                watchdog.start()
 
-      stdout, stderr = proc.communicate()
+            stdout, stderr = proc.communicate()
 
-      with lock:
-        sys.stdout.write(stdout.decode('utf-8') + '\n')
-        sys.stdout.flush()
-        if stderr:
-          sys.stderr.write(stderr.decode('utf-8') + '\n')
-          sys.stderr.flush()
-    except Exception as e:
-      with lock:
-        sys.stderr.write('Failed: ' + str(e) + ': '.join(command) + '\n')
-    finally:
-      with lock:
-        if not (timeout is None or watchdog is None):
-          if not watchdog.is_alive():
-              sys.stderr.write('Terminated by timeout: ' +
-                               ' '.join(command) + '\n')
-          watchdog.cancel()
-      task_queue.task_done()
+            with lock:
+                sys.stdout.write(stdout.decode("utf-8") + "\n")
+                sys.stdout.flush()
+                if stderr:
+                    sys.stderr.write(stderr.decode("utf-8") + "\n")
+                    sys.stderr.flush()
+        except Exception as e:
+            with lock:
+                sys.stderr.write("Failed: " + str(e) + ": ".join(command) + "\n")
+        finally:
+            with lock:
+                if not (timeout is None or watchdog is None):
+                    if not watchdog.is_alive():
+                        sys.stderr.write("Terminated by timeout: " + " ".join(command) + "\n")
+                    watchdog.cancel()
+            task_queue.task_done()
 
 
 def start_workers(max_tasks, tidy_caller, task_queue, lock, timeout):
-  for _ in range(max_tasks):
-    t = threading.Thread(target=tidy_caller, args=(task_queue, lock, timeout))
-    t.daemon = True
-    t.start()
+    for _ in range(max_tasks):
+        t = threading.Thread(target=tidy_caller, args=(task_queue, lock, timeout))
+        t.daemon = True
+        t.start()
 
 
 def merge_replacement_files(tmpdir, mergefile):
-  """Merge all replacement files in a directory into a single file"""
-  # The fixes suggested by clang-tidy >= 4.0.0 are given under
-  # the top level key 'Diagnostics' in the output yaml files
-  mergekey = "Diagnostics"
-  merged = []
-  for replacefile in glob.iglob(os.path.join(tmpdir, '*.yaml')):
-    content = yaml.safe_load(open(replacefile, 'r'))
-    if not content:
-      continue # Skip empty files.
-    merged.extend(content.get(mergekey, []))
+    """Merge all replacement files in a directory into a single file"""
+    # The fixes suggested by clang-tidy >= 4.0.0 are given under
+    # the top level key 'Diagnostics' in the output yaml files
+    mergekey = "Diagnostics"
+    merged = []
+    for replacefile in glob.iglob(os.path.join(tmpdir, "*.yaml")):
+        content = yaml.safe_load(open(replacefile, "r"))
+        if not content:
+            continue  # Skip empty files.
+        merged.extend(content.get(mergekey, []))
 
-  if merged:
-    # MainSourceFile: The key is required by the definition inside
-    # include/clang/Tooling/ReplacementsYaml.h, but the value
-    # is actually never used inside clang-apply-replacements,
-    # so we set it to '' here.
-    output = {'MainSourceFile': '', mergekey: merged}
-    with open(mergefile, 'w') as out:
-      yaml.safe_dump(output, out)
-  else:
-    # Empty the file:
-    open(mergefile, 'w').close()
+    if merged:
+        # MainSourceFile: The key is required by the definition inside
+        # include/clang/Tooling/ReplacementsYaml.h, but the value
+        # is actually never used inside clang-apply-replacements,
+        # so we set it to '' here.
+        output = {"MainSourceFile": "", mergekey: merged}
+        with open(mergefile, "w") as out:
+            yaml.safe_dump(output, out)
+    else:
+        # Empty the file:
+        open(mergefile, "w").close()
 
 
 def main():
-  parser = argparse.ArgumentParser(description=
-                                   'Run clang-tidy against changed files, and '
-                                   'output diagnostics only for modified '
-                                   'lines.')
-  parser.add_argument('-clang-tidy-binary', metavar='PATH',
-                      default='clang-tidy',
-                      help='path to clang-tidy binary')
-  parser.add_argument('-p', metavar='NUM', default=0,
-                      help='strip the smallest prefix containing P slashes')
-  parser.add_argument('-regex', metavar='PATTERN', default=None,
-                      help='custom pattern selecting file paths to check '
-                      '(case sensitive, overrides -iregex)')
-  parser.add_argument('-iregex', metavar='PATTERN', default=
-                      r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc)',
-                      help='custom pattern selecting file paths to check '
-                      '(case insensitive, overridden by -regex)')
-  parser.add_argument('-j', type=int, default=1,
-                      help='number of tidy instances to be run in parallel.')
-  parser.add_argument('-timeout', type=int, default=None,
-                      help='timeout per each file in seconds.')
-  parser.add_argument('-fix', action='store_true', default=False,
-                      help='apply suggested fixes')
-  parser.add_argument('-checks',
-                      help='checks filter, when not specified, use clang-tidy '
-                      'default',
-                      default='')
-  parser.add_argument('-path', dest='build_path',
-                      help='Path used to read a compile command database.')
-  if yaml:
-    parser.add_argument('-export-fixes', metavar='FILE', dest='export_fixes',
-                        help='Create a yaml file to store suggested fixes in, '
-                        'which can be applied with clang-apply-replacements.')
-  parser.add_argument('-extra-arg', dest='extra_arg',
-                      action='append', default=[],
-                      help='Additional argument to append to the compiler '
-                      'command line.')
-  parser.add_argument('-extra-arg-before', dest='extra_arg_before',
-                      action='append', default=[],
-                      help='Additional argument to prepend to the compiler '
-                      'command line.')
-  parser.add_argument('-quiet', action='store_true', default=False,
-                      help='Run clang-tidy in quiet mode')
-  clang_tidy_args = []
-  argv = sys.argv[1:]
-  if '--' in argv:
-    clang_tidy_args.extend(argv[argv.index('--'):])
-    argv = argv[:argv.index('--')]
+    parser = argparse.ArgumentParser(
+        description="Run clang-tidy against changed files, and " "output diagnostics only for modified " "lines."
+    )
+    parser.add_argument(
+        "-clang-tidy-binary",
+        metavar="PATH",
+        default="clang-tidy",
+        help="path to clang-tidy binary",
+    )
+    parser.add_argument(
+        "-p",
+        metavar="NUM",
+        default=0,
+        help="strip the smallest prefix containing P slashes",
+    )
+    parser.add_argument(
+        "-regex",
+        metavar="PATTERN",
+        default=None,
+        help="custom pattern selecting file paths to check " "(case sensitive, overrides -iregex)",
+    )
+    parser.add_argument(
+        "-iregex",
+        metavar="PATTERN",
+        default=r".*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc)",
+        help="custom pattern selecting file paths to check " "(case insensitive, overridden by -regex)",
+    )
+    parser.add_argument(
+        "-j",
+        type=int,
+        default=1,
+        help="number of tidy instances to be run in parallel.",
+    )
+    parser.add_argument("-timeout", type=int, default=None, help="timeout per each file in seconds.")
+    parser.add_argument("-fix", action="store_true", default=False, help="apply suggested fixes")
+    parser.add_argument(
+        "-checks",
+        help="checks filter, when not specified, use clang-tidy " "default",
+        default="",
+    )
+    parser.add_argument("-path", dest="build_path", help="Path used to read a compile command database.")
+    if yaml:
+        parser.add_argument(
+            "-export-fixes",
+            metavar="FILE",
+            dest="export_fixes",
+            help="Create a yaml file to store suggested fixes in, "
+            "which can be applied with clang-apply-replacements.",
+        )
+    parser.add_argument(
+        "-extra-arg",
+        dest="extra_arg",
+        action="append",
+        default=[],
+        help="Additional argument to append to the compiler " "command line.",
+    )
+    parser.add_argument(
+        "-extra-arg-before",
+        dest="extra_arg_before",
+        action="append",
+        default=[],
+        help="Additional argument to prepend to the compiler " "command line.",
+    )
+    parser.add_argument(
+        "-quiet",
+        action="store_true",
+        default=False,
+        help="Run clang-tidy in quiet mode",
+    )
+    clang_tidy_args = []
+    argv = sys.argv[1:]
+    if "--" in argv:
+        clang_tidy_args.extend(argv[argv.index("--") :])
+        argv = argv[: argv.index("--")]
 
-  args = parser.parse_args(argv)
+    args = parser.parse_args(argv)
 
-  # Extract changed lines for each file.
-  filename = None
-  lines_by_file = {}
-  for line in sys.stdin:
-    match = re.search('^\+\+\+\ \"?(.*?/){%s}([^ \t\n\"]*)' % args.p, line)
-    if match:
-      filename = match.group(2)
-    if filename is None:
-      continue
+    # Extract changed lines for each file.
+    filename = None
+    lines_by_file = {}
+    for line in sys.stdin:
+        match = re.search('^\+\+\+\ "?(.*?/){%s}([^ \t\n"]*)' % args.p, line)
+        if match:
+            filename = match.group(2)
+        if filename is None:
+            continue
 
-    if args.regex is not None:
-      if not re.match('^%s$' % args.regex, filename):
-        continue
-    else:
-      if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE):
-        continue
+        if args.regex is not None:
+            if not re.match("^%s$" % args.regex, filename):
+                continue
+        else:
+            if not re.match("^%s$" % args.iregex, filename, re.IGNORECASE):
+                continue
 
-    match = re.search('^@@.*\+(\d+)(,(\d+))?', line)
-    if match:
-      start_line = int(match.group(1))
-      line_count = 1
-      if match.group(3):
-        line_count = int(match.group(3))
-      if line_count == 0:
-        continue
-      end_line = start_line + line_count - 1
-      lines_by_file.setdefault(filename, []).append([start_line, end_line])
+        match = re.search("^@@.*\+(\d+)(,(\d+))?", line)
+        if match:
+            start_line = int(match.group(1))
+            line_count = 1
+            if match.group(3):
+                line_count = int(match.group(3))
+            if line_count == 0:
+                continue
+            end_line = start_line + line_count - 1
+            lines_by_file.setdefault(filename, []).append([start_line, end_line])
 
-  if not any(lines_by_file):
-    print("No relevant changes found.")
-    sys.exit(0)
+    if not any(lines_by_file):
+        print("No relevant changes found.")
+        sys.exit(0)
 
-  max_task_count = args.j
-  if max_task_count == 0:
-      max_task_count = multiprocessing.cpu_count()
-  max_task_count = min(len(lines_by_file), max_task_count)
+    max_task_count = args.j
+    if max_task_count == 0:
+        max_task_count = multiprocessing.cpu_count()
+    max_task_count = min(len(lines_by_file), max_task_count)
 
-  tmpdir = None
-  if yaml and args.export_fixes:
-    tmpdir = tempfile.mkdtemp()
-
-  # Tasks for clang-tidy.
-  task_queue = queue.Queue(max_task_count)
-  # A lock for console output.
-  lock = threading.Lock()
-
-  # Run a pool of clang-tidy workers.
-  start_workers(max_task_count, run_tidy, task_queue, lock, args.timeout)
-
-  # Form the common args list.
-  common_clang_tidy_args = []
-  if args.fix:
-    common_clang_tidy_args.append('-fix')
-  if args.checks != '':
-    common_clang_tidy_args.append('-checks=' + args.checks)
-  if args.quiet:
-    common_clang_tidy_args.append('-quiet')
-  if args.build_path is not None:
-    common_clang_tidy_args.append('-p=%s' % args.build_path)
-  for arg in args.extra_arg:
-    common_clang_tidy_args.append('-extra-arg=%s' % arg)
-  for arg in args.extra_arg_before:
-    common_clang_tidy_args.append('-extra-arg-before=%s' % arg)
-
-  for name in lines_by_file:
-    line_filter_json = json.dumps(
-      [{"name": name, "lines": lines_by_file[name]}],
-      separators=(',', ':'))
-
-    # Run clang-tidy on files containing changes.
-    command = [args.clang_tidy_binary]
-    command.append('-line-filter=' + line_filter_json)
+    tmpdir = None
     if yaml and args.export_fixes:
-      # Get a temporary file. We immediately close the handle so clang-tidy can
-      # overwrite it.
-      (handle, tmp_name) = tempfile.mkstemp(suffix='.yaml', dir=tmpdir)
-      os.close(handle)
-      command.append('-export-fixes=' + tmp_name)
-    command.extend(common_clang_tidy_args)
-    command.append(name)
-    command.extend(clang_tidy_args)
+        tmpdir = tempfile.mkdtemp()
 
-    task_queue.put(command)
+    # Tasks for clang-tidy.
+    task_queue = queue.Queue(max_task_count)
+    # A lock for console output.
+    lock = threading.Lock()
 
-  # Wait for all threads to be done.
-  task_queue.join()
+    # Run a pool of clang-tidy workers.
+    start_workers(max_task_count, run_tidy, task_queue, lock, args.timeout)
 
-  if yaml and args.export_fixes:
-    print('Writing fixes to ' + args.export_fixes + ' ...')
-    try:
-      merge_replacement_files(tmpdir, args.export_fixes)
-    except:
-      sys.stderr.write('Error exporting fixes.\n')
-      traceback.print_exc()
+    # Form the common args list.
+    common_clang_tidy_args = []
+    if args.fix:
+        common_clang_tidy_args.append("-fix")
+    if args.checks != "":
+        common_clang_tidy_args.append("-checks=" + args.checks)
+    if args.quiet:
+        common_clang_tidy_args.append("-quiet")
+    if args.build_path is not None:
+        common_clang_tidy_args.append("-p=%s" % args.build_path)
+    for arg in args.extra_arg:
+        common_clang_tidy_args.append("-extra-arg=%s" % arg)
+    for arg in args.extra_arg_before:
+        common_clang_tidy_args.append("-extra-arg-before=%s" % arg)
 
-  if tmpdir:
-    shutil.rmtree(tmpdir)
+    for name in lines_by_file:
+        line_filter_json = json.dumps([{"name": name, "lines": lines_by_file[name]}], separators=(",", ":"))
+
+        # Run clang-tidy on files containing changes.
+        command = [args.clang_tidy_binary]
+        command.append("-line-filter=" + line_filter_json)
+        if yaml and args.export_fixes:
+            # Get a temporary file. We immediately close the handle so clang-tidy can
+            # overwrite it.
+            (handle, tmp_name) = tempfile.mkstemp(suffix=".yaml", dir=tmpdir)
+            os.close(handle)
+            command.append("-export-fixes=" + tmp_name)
+        command.extend(common_clang_tidy_args)
+        command.append(name)
+        command.extend(clang_tidy_args)
+
+        task_queue.put(command)
+
+    # Wait for all threads to be done.
+    task_queue.join()
+
+    if yaml and args.export_fixes:
+        print("Writing fixes to " + args.export_fixes + " ...")
+        try:
+            merge_replacement_files(tmpdir, args.export_fixes)
+        except:
+            sys.stderr.write("Error exporting fixes.\n")
+            traceback.print_exc()
+
+    if tmpdir:
+        shutil.rmtree(tmpdir)
 
 
-if __name__ == '__main__':
-  main()
+if __name__ == "__main__":
+    main()

tools/github/clang-tidy/run-clang-tidy.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
 #
-#===- run-clang-tidy.py - Parallel clang-tidy runner --------*- python -*--===#
+# ===- run-clang-tidy.py - Parallel clang-tidy runner --------*- python -*--===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
-#===-----------------------------------------------------------------------===#
+# ===-----------------------------------------------------------------------===#
 # FIXME: Integrate with clang-tidy-diff.py
 
 
@@ -50,11 +50,11 @@ import threading
 import traceback
 
 try:
-  import yaml
+    import yaml
 except ImportError:
-  yaml = None
+    yaml = None
 
-is_py2 = sys.version[0] == '2'
+is_py2 = sys.version[0] == "2"
 
 if is_py2:
     import Queue as queue
@@ -63,275 +63,327 @@ else:
 
 
 def find_compilation_database(path):
-  """Adjusts the directory until a compilation database is found."""
-  result = './'
-  while not os.path.isfile(os.path.join(result, path)):
-    if os.path.realpath(result) == '/':
-      print('Error: could not find compilation database.')
-      sys.exit(1)
-    result += '../'
-  return os.path.realpath(result)
+    """Adjusts the directory until a compilation database is found."""
+    result = "./"
+    while not os.path.isfile(os.path.join(result, path)):
+        if os.path.realpath(result) == "/":
+            print("Error: could not find compilation database.")
+            sys.exit(1)
+        result += "../"
+    return os.path.realpath(result)
 
 
 def make_absolute(f, directory):
-  if os.path.isabs(f):
-    return f
-  return os.path.normpath(os.path.join(directory, f))
+    if os.path.isabs(f):
+        return f
+    return os.path.normpath(os.path.join(directory, f))
 
 
-def get_tidy_invocation(f, clang_tidy_binary, checks, tmpdir, build_path,
-                        header_filter, allow_enabling_alpha_checkers,
-                        extra_arg, extra_arg_before, quiet, config):
-  """Gets a command line for clang-tidy."""
-  start = [clang_tidy_binary]
-  if allow_enabling_alpha_checkers:
-    start.append('-allow-enabling-analyzer-alpha-checkers')
-  if header_filter is not None:
-    start.append('-header-filter=' + header_filter)
-  if checks:
-    start.append('-checks=' + checks)
-  if tmpdir is not None:
-    start.append('-export-fixes')
-    # Get a temporary file. We immediately close the handle so clang-tidy can
-    # overwrite it.
-    (handle, name) = tempfile.mkstemp(suffix='.yaml', dir=tmpdir)
-    os.close(handle)
-    start.append(name)
-  for arg in extra_arg:
-      start.append('-extra-arg=%s' % arg)
-  for arg in extra_arg_before:
-      start.append('-extra-arg-before=%s' % arg)
-  start.append('-p=' + build_path)
-  if quiet:
-      start.append('-quiet')
-  if config:
-      start.append('-config=' + config)
-  start.append(f)
-  return start
+def get_tidy_invocation(
+    f,
+    clang_tidy_binary,
+    checks,
+    tmpdir,
+    build_path,
+    header_filter,
+    allow_enabling_alpha_checkers,
+    extra_arg,
+    extra_arg_before,
+    quiet,
+    config,
+):
+    """Gets a command line for clang-tidy."""
+    start = [clang_tidy_binary]
+    if allow_enabling_alpha_checkers:
+        start.append("-allow-enabling-analyzer-alpha-checkers")
+    if header_filter is not None:
+        start.append("-header-filter=" + header_filter)
+    if checks:
+        start.append("-checks=" + checks)
+    if tmpdir is not None:
+        start.append("-export-fixes")
+        # Get a temporary file. We immediately close the handle so clang-tidy can
+        # overwrite it.
+        (handle, name) = tempfile.mkstemp(suffix=".yaml", dir=tmpdir)
+        os.close(handle)
+        start.append(name)
+    for arg in extra_arg:
+        start.append("-extra-arg=%s" % arg)
+    for arg in extra_arg_before:
+        start.append("-extra-arg-before=%s" % arg)
+    start.append("-p=" + build_path)
+    if quiet:
+        start.append("-quiet")
+    if config:
+        start.append("-config=" + config)
+    start.append(f)
+    return start
 
 
 def merge_replacement_files(tmpdir, mergefile):
-  """Merge all replacement files in a directory into a single file"""
-  # The fixes suggested by clang-tidy >= 4.0.0 are given under
-  # the top level key 'Diagnostics' in the output yaml files
-  mergekey = "Diagnostics"
-  merged=[]
-  for replacefile in glob.iglob(os.path.join(tmpdir, '*.yaml')):
-    content = yaml.safe_load(open(replacefile, 'r'))
-    if not content:
-      continue # Skip empty files.
-    merged.extend(content.get(mergekey, []))
+    """Merge all replacement files in a directory into a single file"""
+    # The fixes suggested by clang-tidy >= 4.0.0 are given under
+    # the top level key 'Diagnostics' in the output yaml files
+    mergekey = "Diagnostics"
+    merged = []
+    for replacefile in glob.iglob(os.path.join(tmpdir, "*.yaml")):
+        content = yaml.safe_load(open(replacefile, "r"))
+        if not content:
+            continue  # Skip empty files.
+        merged.extend(content.get(mergekey, []))
 
-  if merged:
-    # MainSourceFile: The key is required by the definition inside
-    # include/clang/Tooling/ReplacementsYaml.h, but the value
-    # is actually never used inside clang-apply-replacements,
-    # so we set it to '' here.
-    output = {'MainSourceFile': '', mergekey: merged}
-    with open(mergefile, 'w') as out:
-      yaml.safe_dump(output, out)
-  else:
-    # Empty the file:
-    open(mergefile, 'w').close()
+    if merged:
+        # MainSourceFile: The key is required by the definition inside
+        # include/clang/Tooling/ReplacementsYaml.h, but the value
+        # is actually never used inside clang-apply-replacements,
+        # so we set it to '' here.
+        output = {"MainSourceFile": "", mergekey: merged}
+        with open(mergefile, "w") as out:
+            yaml.safe_dump(output, out)
+    else:
+        # Empty the file:
+        open(mergefile, "w").close()
 
 
 def check_clang_apply_replacements_binary(args):
-  """Checks if invoking supplied clang-apply-replacements binary works."""
-  try:
-    subprocess.check_call([args.clang_apply_replacements_binary, '--version'])
-  except:
-    print('Unable to run clang-apply-replacements. Is clang-apply-replacements '
-          'binary correctly specified?', file=sys.stderr)
-    traceback.print_exc()
-    sys.exit(1)
+    """Checks if invoking supplied clang-apply-replacements binary works."""
+    try:
+        subprocess.check_call([args.clang_apply_replacements_binary, "--version"])
+    except:
+        print(
+            "Unable to run clang-apply-replacements. Is clang-apply-replacements " "binary correctly specified?",
+            file=sys.stderr,
+        )
+        traceback.print_exc()
+        sys.exit(1)
 
 
 def apply_fixes(args, tmpdir):
-  """Calls clang-apply-fixes on a given directory."""
-  invocation = [args.clang_apply_replacements_binary]
-  if args.format:
-    invocation.append('-format')
-  if args.style:
-    invocation.append('-style=' + args.style)
-  invocation.append(tmpdir)
-  subprocess.call(invocation)
+    """Calls clang-apply-fixes on a given directory."""
+    invocation = [args.clang_apply_replacements_binary]
+    if args.format:
+        invocation.append("-format")
+    if args.style:
+        invocation.append("-style=" + args.style)
+    invocation.append(tmpdir)
+    subprocess.call(invocation)
 
 
 def run_tidy(args, tmpdir, build_path, queue, lock, failed_files):
-  """Takes filenames out of queue and runs clang-tidy on them."""
-  while True:
-    name = queue.get()
-    invocation = get_tidy_invocation(name, args.clang_tidy_binary, args.checks,
-                                     tmpdir, build_path, args.header_filter,
-                                     args.allow_enabling_alpha_checkers,
-                                     args.extra_arg, args.extra_arg_before,
-                                     args.quiet, args.config)
+    """Takes filenames out of queue and runs clang-tidy on them."""
+    while True:
+        name = queue.get()
+        invocation = get_tidy_invocation(
+            name,
+            args.clang_tidy_binary,
+            args.checks,
+            tmpdir,
+            build_path,
+            args.header_filter,
+            args.allow_enabling_alpha_checkers,
+            args.extra_arg,
+            args.extra_arg_before,
+            args.quiet,
+            args.config,
+        )
 
-    proc = subprocess.Popen(invocation, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-    output, err = proc.communicate()
-    if proc.returncode != 0:
-      failed_files.append(name)
-    with lock:
-      sys.stdout.write(' '.join(invocation) + '\n' + output.decode('utf-8'))
-      if len(err) > 0:
-        sys.stdout.flush()
-        sys.stderr.write(err.decode('utf-8'))
-    queue.task_done()
+        proc = subprocess.Popen(invocation, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        output, err = proc.communicate()
+        if proc.returncode != 0:
+            failed_files.append(name)
+        with lock:
+            sys.stdout.write(" ".join(invocation) + "\n" + output.decode("utf-8"))
+            if len(err) > 0:
+                sys.stdout.flush()
+                sys.stderr.write(err.decode("utf-8"))
+        queue.task_done()
 
 
 def main():
-  parser = argparse.ArgumentParser(description='Runs clang-tidy over all files '
-                                   'in a compilation database. Requires '
-                                   'clang-tidy and clang-apply-replacements in '
-                                   '$PATH.')
-  parser.add_argument('-allow-enabling-alpha-checkers',
-                      action='store_true', help='allow alpha checkers from '
-                                                'clang-analyzer.')
-  parser.add_argument('-clang-tidy-binary', metavar='PATH',
-                      default='clang-tidy-11',
-                      help='path to clang-tidy binary')
-  parser.add_argument('-clang-apply-replacements-binary', metavar='PATH',
-                      default='clang-apply-replacements-11',
-                      help='path to clang-apply-replacements binary')
-  parser.add_argument('-checks', default=None,
-                      help='checks filter, when not specified, use clang-tidy '
-                      'default')
-  parser.add_argument('-config', default=None,
-                      help='Specifies a configuration in YAML/JSON format: '
-                      '  -config="{Checks: \'*\', '
-                      '                       CheckOptions: [{key: x, '
-                      '                                       value: y}]}" '
-                      'When the value is empty, clang-tidy will '
-                      'attempt to find a file named .clang-tidy for '
-                      'each source file in its parent directories.')
-  parser.add_argument('-header-filter', default=None,
-                      help='regular expression matching the names of the '
-                      'headers to output diagnostics from. Diagnostics from '
-                      'the main file of each translation unit are always '
-                      'displayed.')
-  if yaml:
-    parser.add_argument('-export-fixes', metavar='filename', dest='export_fixes',
-                        help='Create a yaml file to store suggested fixes in, '
-                        'which can be applied with clang-apply-replacements.')
-  parser.add_argument('-j', type=int, default=0,
-                      help='number of tidy instances to be run in parallel.')
-  parser.add_argument('files', nargs='*', default=['.*'],
-                      help='files to be processed (regex on path)')
-  parser.add_argument('-fix', action='store_true', help='apply fix-its')
-  parser.add_argument('-format', action='store_true', help='Reformat code '
-                      'after applying fixes')
-  parser.add_argument('-style', default='file', help='The style of reformat '
-                      'code after applying fixes')
-  parser.add_argument('-p', dest='build_path',
-                      help='Path used to read a compile command database.')
-  parser.add_argument('-extra-arg', dest='extra_arg',
-                      action='append', default=[],
-                      help='Additional argument to append to the compiler '
-                      'command line.')
-  parser.add_argument('-extra-arg-before', dest='extra_arg_before',
-                      action='append', default=[],
-                      help='Additional argument to prepend to the compiler '
-                      'command line.')
-  parser.add_argument('-quiet', action='store_true',
-                      help='Run clang-tidy in quiet mode')
-  args = parser.parse_args()
+    parser = argparse.ArgumentParser(
+        description="Runs clang-tidy over all files "
+        "in a compilation database. Requires "
+        "clang-tidy and clang-apply-replacements in "
+        "$PATH."
+    )
+    parser.add_argument(
+        "-allow-enabling-alpha-checkers",
+        action="store_true",
+        help="allow alpha checkers from " "clang-analyzer.",
+    )
+    parser.add_argument(
+        "-clang-tidy-binary",
+        metavar="PATH",
+        default="clang-tidy-11",
+        help="path to clang-tidy binary",
+    )
+    parser.add_argument(
+        "-clang-apply-replacements-binary",
+        metavar="PATH",
+        default="clang-apply-replacements-11",
+        help="path to clang-apply-replacements binary",
+    )
+    parser.add_argument(
+        "-checks",
+        default=None,
+        help="checks filter, when not specified, use clang-tidy " "default",
+    )
+    parser.add_argument(
+        "-config",
+        default=None,
+        help="Specifies a configuration in YAML/JSON format: "
+        "  -config=\"{Checks: '*', "
+        "                       CheckOptions: [{key: x, "
+        '                                       value: y}]}" '
+        "When the value is empty, clang-tidy will "
+        "attempt to find a file named .clang-tidy for "
+        "each source file in its parent directories.",
+    )
+    parser.add_argument(
+        "-header-filter",
+        default=None,
+        help="regular expression matching the names of the "
+        "headers to output diagnostics from. Diagnostics from "
+        "the main file of each translation unit are always "
+        "displayed.",
+    )
+    if yaml:
+        parser.add_argument(
+            "-export-fixes",
+            metavar="filename",
+            dest="export_fixes",
+            help="Create a yaml file to store suggested fixes in, "
+            "which can be applied with clang-apply-replacements.",
+        )
+    parser.add_argument(
+        "-j",
+        type=int,
+        default=0,
+        help="number of tidy instances to be run in parallel.",
+    )
+    parser.add_argument("files", nargs="*", default=[".*"], help="files to be processed (regex on path)")
+    parser.add_argument("-fix", action="store_true", help="apply fix-its")
+    parser.add_argument("-format", action="store_true", help="Reformat code " "after applying fixes")
+    parser.add_argument(
+        "-style",
+        default="file",
+        help="The style of reformat " "code after applying fixes",
+    )
+    parser.add_argument("-p", dest="build_path", help="Path used to read a compile command database.")
+    parser.add_argument(
+        "-extra-arg",
+        dest="extra_arg",
+        action="append",
+        default=[],
+        help="Additional argument to append to the compiler " "command line.",
+    )
+    parser.add_argument(
+        "-extra-arg-before",
+        dest="extra_arg_before",
+        action="append",
+        default=[],
+        help="Additional argument to prepend to the compiler " "command line.",
+    )
+    parser.add_argument("-quiet", action="store_true", help="Run clang-tidy in quiet mode")
+    args = parser.parse_args()
 
-  db_path = 'compile_commands.json'
+    db_path = "compile_commands.json"
 
-  if args.build_path is not None:
-    build_path = args.build_path
-  else:
-    # Find our database
-    build_path = find_compilation_database(db_path)
-
-  try:
-    invocation = [args.clang_tidy_binary, '-list-checks']
-    if args.allow_enabling_alpha_checkers:
-      invocation.append('-allow-enabling-analyzer-alpha-checkers')
-    invocation.append('-p=' + build_path)
-    if args.checks:
-      invocation.append('-checks=' + args.checks)
-    invocation.append('-')
-    if args.quiet:
-      # Even with -quiet we still want to check if we can call clang-tidy.
-      with open(os.devnull, 'w') as dev_null:
-        subprocess.check_call(invocation, stdout=dev_null)
+    if args.build_path is not None:
+        build_path = args.build_path
     else:
-      subprocess.check_call(invocation)
-  except:
-    print("Unable to run clang-tidy.", file=sys.stderr)
-    sys.exit(1)
+        # Find our database
+        build_path = find_compilation_database(db_path)
 
-  # Load the database and extract all files.
-  database = json.load(open(os.path.join(build_path, db_path)))
-  files = [make_absolute(entry['file'], entry['directory'])
-           for entry in database]
+    try:
+        invocation = [args.clang_tidy_binary, "-list-checks"]
+        if args.allow_enabling_alpha_checkers:
+            invocation.append("-allow-enabling-analyzer-alpha-checkers")
+        invocation.append("-p=" + build_path)
+        if args.checks:
+            invocation.append("-checks=" + args.checks)
+        invocation.append("-")
+        if args.quiet:
+            # Even with -quiet we still want to check if we can call clang-tidy.
+            with open(os.devnull, "w") as dev_null:
+                subprocess.check_call(invocation, stdout=dev_null)
+        else:
+            subprocess.check_call(invocation)
+    except:
+        print("Unable to run clang-tidy.", file=sys.stderr)
+        sys.exit(1)
 
-  max_task = args.j
-  if max_task == 0:
-    max_task = multiprocessing.cpu_count()
+    # Load the database and extract all files.
+    database = json.load(open(os.path.join(build_path, db_path)))
+    files = [make_absolute(entry["file"], entry["directory"]) for entry in database]
 
-  tmpdir = None
-  if args.fix or (yaml and args.export_fixes):
-    check_clang_apply_replacements_binary(args)
-    tmpdir = tempfile.mkdtemp()
+    max_task = args.j
+    if max_task == 0:
+        max_task = multiprocessing.cpu_count()
 
-  # Build up a big regexy filter from all command line arguments.
-  file_name_re = re.compile('|'.join(args.files))
+    tmpdir = None
+    if args.fix or (yaml and args.export_fixes):
+        check_clang_apply_replacements_binary(args)
+        tmpdir = tempfile.mkdtemp()
 
-  return_code = 0
-  try:
-    # Spin up a bunch of tidy-launching threads.
-    task_queue = queue.Queue(max_task)
-    # List of files with a non-zero return code.
-    failed_files = []
-    lock = threading.Lock()
-    for _ in range(max_task):
-      t = threading.Thread(target=run_tidy,
-                           args=(args, tmpdir, build_path, task_queue, lock, failed_files))
-      t.daemon = True
-      t.start()
+    # Build up a big regexy filter from all command line arguments.
+    file_name_re = re.compile("|".join(args.files))
 
-    # Fill the queue with files.
-    for name in files:
-      if file_name_re.search(name):
-        task_queue.put(name)
+    return_code = 0
+    try:
+        # Spin up a bunch of tidy-launching threads.
+        task_queue = queue.Queue(max_task)
+        # List of files with a non-zero return code.
+        failed_files = []
+        lock = threading.Lock()
+        for _ in range(max_task):
+            t = threading.Thread(
+                target=run_tidy,
+                args=(args, tmpdir, build_path, task_queue, lock, failed_files),
+            )
+            t.daemon = True
+            t.start()
 
-    # Wait for all threads to be done.
-    task_queue.join()
-    if len(failed_files):
-      return_code = 1
+        # Fill the queue with files.
+        for name in files:
+            if file_name_re.search(name):
+                task_queue.put(name)
+
+        # Wait for all threads to be done.
+        task_queue.join()
+        if len(failed_files):
+            return_code = 1
+
+    except KeyboardInterrupt:
+        # This is a sad hack. Unfortunately subprocess goes
+        # bonkers with ctrl-c and we start forking merrily.
+        print("\nCtrl-C detected, goodbye.")
+        if tmpdir:
+            shutil.rmtree(tmpdir)
+        os.kill(0, 9)
+
+    if yaml and args.export_fixes:
+        print("Writing fixes to " + args.export_fixes + " ...")
+        try:
+            merge_replacement_files(tmpdir, args.export_fixes)
+        except:
+            print("Error exporting fixes.\n", file=sys.stderr)
+            traceback.print_exc()
+            return_code = 1
+
+    if args.fix:
+        print("Applying fixes ...")
+        try:
+            apply_fixes(args, tmpdir)
+        except:
+            print("Error applying fixes.\n", file=sys.stderr)
+            traceback.print_exc()
+            return_code = 1
 
-  except KeyboardInterrupt:
-    # This is a sad hack. Unfortunately subprocess goes
-    # bonkers with ctrl-c and we start forking merrily.
-    print('\nCtrl-C detected, goodbye.')
     if tmpdir:
-      shutil.rmtree(tmpdir)
-    os.kill(0, 9)
-
-  if yaml and args.export_fixes:
-    print('Writing fixes to ' + args.export_fixes + ' ...')
-    try:
-      merge_replacement_files(tmpdir, args.export_fixes)
-    except:
-      print('Error exporting fixes.\n', file=sys.stderr)
-      traceback.print_exc()
-      return_code=1
-
-  if args.fix:
-    print('Applying fixes ...')
-    try:
-      apply_fixes(args, tmpdir)
-    except:
-      print('Error applying fixes.\n', file=sys.stderr)
-      traceback.print_exc()
-      return_code = 1
-
-  if tmpdir:
-    shutil.rmtree(tmpdir)
-  sys.exit(return_code)
+        shutil.rmtree(tmpdir)
+    sys.exit(return_code)
 
 
-if __name__ == '__main__':
-  main()
+if __name__ == "__main__":
+    main()