mock_pid.return_value = 1234
        manager = DagFileProcessorManager(
            dag_directory=TEST_DAG_FOLDER,
            max_runs=1,
            processor_timeout=timedelta(seconds=5),
            signal_conn=MagicMock(),
            dag_ids=[],
            pickle_dags=False,
            async_mode=True,
        )
        processor = DagFileProcessorProcess(
            file_path="abc.txt",
            pickle_dags=False,
            dag_ids=[],
            dag_directory=str(TEST_DAG_FOLDER),
            callback_requests=[],
        )
        processor._start_time = timezone.make_aware(datetime.max)
        manager._processors = {"abc.txt": processor}
        manager._kill_timed_out_processors()
        mock_dag_file_processor.kill.assert_not_called()
    @conf_vars({("core", "load_examples"): "False"})
    @pytest.mark.execution_timeout(10)
    def test_dag_with_system_exit(self):