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 path(self,x1,y1,x2,y2):
		self.board[y1:y2+1,x1:x2+1] = self.color