async def METHOD_NAME(coresys: CoreSys):
    """Test job cannot be started outside of parent."""
    job = coresys.jobs.new_job(TEST_JOB)
    job2 = coresys.jobs.new_job(f"{TEST_JOB}_2")
    with job.start():
        with pytest.raises(JobStartException):
            with job2.start():
                pass
    with job2.start():
        assert coresys.jobs.current == job2