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 is_resource_deleted(self, id):
        try:
            self.get_snapshot(id)
        except exceptions.NotFound:
            return True
        return False