def test_bool(self):
        prio_set_list = event._PrioritizedSetList()

        assert bool(prio_set_list) is False

        prio_set_list.add(0, None)
        assert bool(prio_set_list) is True
def test_scheme_not_listed():

    with pytest.raises(NotImplementedError):
        UrlPath('test:///tmp/test').touch()