Clean local directory before setting up test files (#510)

server/autotest_server/__init__.py

@@ -343,6 +343,7 @@ def run_test(settings_id, test_id, files_url, categories, user, test_env_vars):
         redis_connection().hset("autotest:settings", key=settings_id, value=json.dumps(settings))
         test_username, tests_path = tester_user()
         try:
+            _clear_working_directory(tests_path, test_username)
             _setup_files(settings_id, user, files_url, tests_path, test_username)
             cmd = run_test_command(test_username=test_username)
             results = _run_test_specs(cmd, settings, categories, tests_path, test_username, test_id, test_env_vars)

server/autotest_server/tests/test_autotest_server.py

@@ -48,3 +48,20 @@ def test_sticky():
     autotest_server._clear_working_directory(autotest_worker_working_dir, autotest_worker)
 
     assert os.path.exists(path) is False
+
+
+def test_pre_remove():
+    workers = autotest_server.config["workers"]
+    autotest_worker = workers[0]["user"]
+    autotest_worker_working_dir = f"/home/docker/.autotesting/workers/{autotest_worker}"
+    path = f"{autotest_worker_working_dir}/__pycache__"
+
+    if not os.path.exists(path):
+        mkdir_cmd = f"sudo -u {autotest_worker} mkdir {path}"
+        chmod_cmd = f"sudo -u {autotest_worker} chmod 000 {path}"
+        subprocess.run(mkdir_cmd, shell=True)
+        subprocess.run(chmod_cmd, shell=True)
+
+    autotest_server._clear_working_directory(autotest_worker_working_dir, autotest_worker)
+
+    assert os.path.exists(path) is False