def test_ratelimit_must_expires_according_to_ttl():
rl = RateLimit()
rl.refresh("foobar")
ok_(not rl.expired("foobar", 0.5))
time.sleep(1)
ok_(rl.expired("foobar", 0.5))
def test_ratelimit_with_negative_ttls_expires_immediately():
rl = RateLimit()
rl.refresh("foobar")
ok_(rl.expired("foobar", -1))