test: add test for KeyValuePairsCompilerT6

test/ObjCommonTestUtils/Utils/TestMemoryManager.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "Utils/MemoryManager.h"
+
+#include <cstdlib>
+
+class TestMemoryManager : public MemoryManager
+{
+public:
+    [[nodiscard]] size_t GetAllocationCount() const
+    {
+        return m_allocations.size() + m_destructible.size();
+    }
+};