def METHOD_NAME(self):
    watcher = FailingResponder(
        pattern=r"What's the password\?",
        response="Rosebud\n",
        sentinel="You're not Citizen Kane!",
    )
    try:
        run(
            "python -u respond_fail.py",
            watchers=[watcher],
            hide=True,
            timeout=5,
        )
    except Failure as e:
        assert isinstance(e.reason, WatcherError)
        assert e.result.exited is None
    else:
        assert False, "Did not raise Failure!"