@testing.requires.timing_intensive
    def test_timeout(self):
        p = self._queuepool_fixture(pool_size=3,
                           max_overflow=0,
                           timeout=2)
        c1 = p.connect()
        c2 = p.connect()
        c3 = p.connect()
        now = time.time()
        try:
            c4 = p.connect()
            assert False
        except tsa.exc.TimeoutError:
            assert int(now - time.time()) == 2
dataset/ETHPy150Open zzzeek/sqlalchemy/test/engine/test_pool.py/QueuePoolTest.test_timeout/swapped operands of `-`