async def test_herd(self, r, event_loop):
await r.flushdb()
now = int(time.time())
cache = HerdCache(r,
self.app,
default_herd_timeout=1,
extend_herd_timeout=1)
await cache.set(self.key, self.expensive_work(self.data), self.data)
await asyncio.sleep(1, loop=event_loop)
# first get
identity = cache._gen_identity(self.key, self.data)
content = await r.get(identity)
content, expect_expire_time = cache._unpack(content)
assert now + 1 == expect_expire_time
# HerdCach.get
await asyncio.sleep(0.1, loop=event_loop)
res = await cache.get(self.key, self.data)
# first herd get will reset expire time and return None
assert res is None
# second get
identity = cache._gen_identity(self.key, self.data)
content = await r.get(identity)
content, new_expire_time = cache._unpack(content)
assert new_expire_time >= expect_expire_time + 1
async def test_set(self, r):
await r.flushdb()
cache = HerdCache(r, self.app, default_herd_timeout=1,
extend_herd_timeout=1)
now = int(time.time())
res = await cache.set(self.key,
self.expensive_work(self.data),
self.data)
assert res
identity = cache._gen_identity(self.key, self.data)
content = await r.get(identity)
content, expect_expire_time = cache._unpack(content)
# supposed equal to 1, but may there be latency
assert expect_expire_time - now <= 1
assert content == self.data