def METHOD_NAME(config_name: str) -> None:
    # create proxy w/o fallback
    with pytest.raises(CommunicationError):
        MaestralProxy(config_name)
    # create proxy w/ fallback
    with MaestralProxy(config_name, fallback=True) as m:
        assert m.config_name == config_name
        assert m._is_fallback
        assert isinstance(m._m, Maestral)