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_can_write_identifier_containing_back_ticks(self):
        escaped = cypher_escape("foo `bar`")
        assert escaped == "`foo ``bar```"