Migrate leftover tests away from old storage

Reviewers: teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D2590

tests/concurrent/spin_lock.cpp

@@ -0,0 +1,40 @@
+#include <atomic>
+#include <chrono>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+#include "glog/logging.h"
+
+#include "utils/spin_lock.hpp"
+
+int x = 0;
+utils::SpinLock lock;
+
+void test_lock() {
+  using namespace std::literals;
+
+  {
+    std::unique_lock<utils::SpinLock> guard(lock);
+    x++;
+
+    std::this_thread::sleep_for(25ms);
+
+    CHECK(x < 2) << "x always has to be less than 2 (other "
+                    "threads shouldn't be able to change the x simultaneously";
+    x--;
+  }
+}
+
+int main() {
+  constexpr int N = 16;
+  std::vector<std::thread> threads;
+
+  for (int i = 0; i < N; ++i) threads.push_back(std::thread(test_lock));
+
+  for (auto& thread : threads) {
+    thread.join();
+  }
+
+  return 0;
+}