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from time import sleep
import pytest
from ellar.cache.backends.redis import RedisCacheBackend
from ellar.cache.model import CacheKeyWarning
from .redis_mock import MockRedisClient
class RedisCacheBackendMock(RedisCacheBackend):
MEMCACHE_CLIENT = MockRedisClient
@pytest.mark.asyncio
async def test_redis_backend() -> None:
backend = RedisCacheBackendMock(servers=["redis://localhost:6379/0"])
await backend.set_async("test", "Wanaka", 1)
value = await backend.get_async("test")
assert value == "Wanaka"
sleep(1.1)
value = await backend.get_async("test")
assert not value
class TestRedisCacheBackend:
def setup_method(self):
self.backend = RedisCacheBackendMock(
servers=[
"redis://localhost:6379/0",
"redis://localhost:6379/1",
"redis://localhost:6379/2",
]
)
def test_set(self):
assert self.backend.set("test", "1", 1)
value = self.backend.get("test")
assert value == "1"
def test_has_key(self):
assert not self.backend.has_key("test-has-key")
assert self.backend.set("test-has-key", "1", 1)
assert self.backend.has_key("test-has-key")
def test_delete(self):
assert not self.backend.delete("test-delete")
assert self.backend.set("test-delete", "1", 1)
assert self.backend.delete("test-delete")
def test_touch(self):
assert not self.backend.touch("test-touch")
assert self.backend.set("test-touch", "1", 0.1)
assert self.backend.touch("test-touch", 30)
sleep(0.22)
assert self.backend.get("test-touch") == "1"
def test_incr_async(self):
self.backend.set("test-incr", 0, ttl=1)
self.backend.incr("test-incr")
assert self.backend.get("test-incr") == 1
self.backend.incr("test-incr", 2)
self.backend.incr("test-incr", 3)
assert self.backend.get("test-incr") == 6
def test_decr_async(self):
self.backend.set("test-decr", 2, ttl=1)
self.backend.decr("test-decr")
assert self.backend.get("test-decr") == 1
self.backend.decr("test-decr", 2)
self.backend.decr("test-decr", 3)
assert self.backend.get("test-decr") == 0
def test_pickling_int_values_is_skipped(self):
assert self.backend.set("test-int-key", 1, 1)
assert self.backend.get("test-int-key") == 1
def test_invalid_key_length(self):
# memcached limits key length to 250.
key = ("a" * 250) + "清"
expected_warning = (
"Cache key will cause errors if used with memcached: "
"%r (longer than %s)" % (key, self.backend.MEMCACHE_MAX_KEY_LENGTH)
)
with pytest.warns(CacheKeyWarning) as wa:
self.backend.set(key, "value")
assert str(wa.list[0].message) == str(CacheKeyWarning(expected_warning))
class TestRedisCacheBackendAsync:
def setup_method(self):
self.backend = RedisCacheBackendMock(
servers=[
"redis://localhost:6379/0",
"redis://localhost:6379/1",
"redis://localhost:6379/2",
]
)
@pytest.mark.asyncio
async def test_set_async(
self,
):
assert await self.backend.set_async("test-async", "1", 1)
value = await self.backend.get_async("test")
assert value == "1"
@pytest.mark.asyncio
async def test_has_key_async(
self,
):
assert not await self.backend.has_key_async("test-has-key-async")
assert await self.backend.set_async("test-has-key", "1", 1)
assert await self.backend.has_key_async("test-has-key")
@pytest.mark.asyncio
async def test_delete_async(
self,
):
assert not await self.backend.delete_async("test-delete-async")
assert await self.backend.set_async("test-delete", "1", 0.1)
assert await self.backend.delete_async("test-delete")
@pytest.mark.asyncio
async def test_touch_async(
self,
):
assert not await self.backend.touch_async("test-touch-async")
assert await self.backend.set_async("test-touch", "1", 0.1)
assert await self.backend.touch_async("test-touch", 30)
sleep(0.22)
assert await self.backend.get_async("test-touch") == "1"
@pytest.mark.asyncio
async def test_incr_async(self):
await self.backend.set_async("test-incr-async", 0, ttl=1)
await self.backend.incr_async("test-incr-async")
assert await self.backend.get_async("test-incr-async") == 1
await self.backend.incr_async("test-incr-async", 2)
await self.backend.incr_async("test-incr-async", 3)
assert await self.backend.get_async("test-incr-async") == 6
@pytest.mark.asyncio
async def test_decr_async(self):
await self.backend.set_async("test-decr-async", 2, ttl=1)
await self.backend.decr_async("test-decr-async")
assert await self.backend.get_async("test-decr-async") == 1
await self.backend.decr_async("test-decr-async", 2)
await self.backend.decr_async("test-decr-async", 3)
assert await self.backend.get_async("test-decr-async") == 0
@pytest.mark.asyncio
async def test_zero_timeout_deletes_old_value_if_any(self):
delete_called = False
set_called = False
class DemoCacheClient:
def __init__(self, *args, **kwargs):
pass
async def delete(self, *args, **kwargs):
nonlocal delete_called
delete_called = True
return True
async def set(self, *args, **kwargs):
nonlocal set_called
set_called = True
return True
class DemoMemCachedBackend(RedisCacheBackend):
MEMCACHE_CLIENT = DemoCacheClient
backend = DemoMemCachedBackend(servers=["redis://localhost:6379/0"])
await backend.set_async("zero", "value", ttl=0)
assert set_called and delete_called