Add e2e test

tests/e2e/CMakeLists.txt

@@ -40,6 +40,7 @@ add_subdirectory(write_procedures)
 add_subdirectory(magic_functions)
 add_subdirectory(module_file_manager)
 add_subdirectory(monitoring_server)
+add_subdirectory(util_e2e)
 
 copy_e2e_python_files(pytest_runner pytest_runner.sh "")
 file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/memgraph-selfsigned.crt DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

tests/e2e/util_e2e/CMakeLists.txt

@@ -0,0 +1,5 @@
+function(copy_util_e2e_python_files FILE_NAME)
+    copy_e2e_python_files(util_e2e ${FILE_NAME})
+endfunction()
+
+copy_util_e2e_python_files(utility_simple.py)

tests/e2e/util_e2e/utility_simple.py

@@ -0,0 +1,40 @@
+# Copyright 2022 Memgraph Ltd.
+#
+# Use of this software is governed by the Business Source License
+# included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
+# License, and you may not use this file except in compliance with the Business Source License.
+#
+# As of the Change Date specified in that file, in accordance with
+# the Business Source License, use of this software will be governed
+# by the Apache License, Version 2.0, included in the file
+# licenses/APL.txt.
+
+import typing
+import mgclient
+import sys
+import pytest
+
+
+def test_does_throw_if_null_is_checked_against_in_generic_case():
+
+    connection = mgclient.connect(host="localhost", port=7687)
+    connection.autocommit = True
+
+    cursor = connection.cursor()
+
+    query = """WITH 2 AS name
+                RETURN CASE name
+                WHEN 3 THEN 'works'
+                WHEN null THEN "doesn't work"
+                ELSE 'something went wrong'
+                END"""
+
+    with pytest.raises(mgclient.DatabaseError) as err:
+        cursor.execute(query)
+
+    error_msg = err.value.args[0]
+    assert error_msg == "Use the generic form when checking against NULL."
+
+
+if __name__ == "__main__":
+    sys.exit(pytest.main([__file__, "-rA"]))

tests/e2e/util_e2e/workloads.yaml

@@ -0,0 +1,13 @@
+template_cluster: &template_cluster
+  cluster:
+    main:
+      args: ["--bolt-port", "7687", "--log-level=TRACE"]
+      log_file: "util-e2e.log"
+      setup_queries: []
+      validation_queries: []
+
+workloads:
+  - name: "Utility simple"
+    binary: "tests/e2e/pytest_runner.sh"
+    args: ["util_e2e/utility_simple.py"]
+    <<: *template_cluster