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 tearDown(self):
        if hasattr(self, "rng_state"):
            torch.set_rng_state(self.rng_state)