def METHOD_NAME(mocker, caplog):
    """
    Verify that `mqttwarn.commands.run` works as expected.
    """
    mocker.patch("sys.argv", ["mqttwarn"])
    run_mqttwarn: Mock = mocker.patch("mqttwarn.commands.run_mqttwarn")
    mqttwarn.commands.run()
    run_mqttwarn.assert_called_once()
    assert caplog.messages == []