def test_incr(self):
key = uuid.uuid4().hex
value = 2
delta = 2
client = Client(['127.0.0.1:11211'])
yield client.set(key, value, 5)
res = yield client.incr(key, delta=delta)
self.assertEqual(res, value + delta)
def test_incr_not_exist(self):
key = uuid.uuid4().hex
client = Client(['127.0.0.1:11211'])
res = yield client.incr(key, delta=2)
self.assertEqual(res, None)
