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 filled_rectangle(self, x, y, w, h):
		self.board[y:y+h,x:x+w] = self.color