chore: import upstream snapshot with attribution

working_dir_error_replication/run_subprocess_test.py

@@ -0,0 +1,31 @@
+"""
+Run writer and reader in separate subprocesses to test Kuzu locks.
+"""
+
+import subprocess
+import time
+import os
+
+
+def main():
+    print("=== Kuzu Subprocess Lock Test ===")
+    print("Starting writer and reader in separate subprocesses...")
+    print("Writer will hold the database lock, reader should block or fail\n")
+
+    start_time = time.time()
+
+    # Start writer subprocess
+    writer_process = subprocess.Popen([os.sys.executable, "writer.py"])
+
+    reader_process = subprocess.Popen([os.sys.executable, "reader.py"])
+
+    # Wait for both processes to complete
+    writer_process.wait()
+    reader_process.wait()
+
+    total_time = time.time() - start_time
+    print(f"\nTotal execution time: {total_time:.2f}s")
+
+
+if __name__ == "__main__":
+    main()