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|
from unittest.mock import Mock, patch
import pytest
from aiocache import AIOCACHE_CACHES, Cache, caches
from aiocache.backends.memory import SimpleMemoryCache
from aiocache.exceptions import InvalidCacheType
from aiocache.factory import _class_from_string, _create_cache
from aiocache.plugins import HitMissRatioPlugin, TimingPlugin
from aiocache.serializers import JsonSerializer, PickleSerializer
CACHE_NAMES = [Cache.MEMORY.NAME]
try:
from aiocache.backends.memcached import MemcachedCache
except ImportError:
MemcachedCache = None
else:
assert Cache.MEMCACHED is not None
CACHE_NAMES.append(Cache.MEMCACHED.NAME)
try:
from aiocache.backends.redis import RedisCache
except ImportError:
RedisCache = None
else:
assert Cache.REDIS is not None
CACHE_NAMES.append(Cache.REDIS.NAME)
@pytest.mark.redis
def test_class_from_string():
assert _class_from_string("aiocache.RedisCache") == RedisCache
@pytest.mark.redis
def test_create_simple_cache():
redis = _create_cache(RedisCache, endpoint="127.0.0.10", port=6378)
assert isinstance(redis, RedisCache)
assert redis.endpoint == "127.0.0.10"
assert redis.port == 6378
def test_create_cache_with_everything():
cache = _create_cache(
SimpleMemoryCache,
serializer={"class": PickleSerializer, "encoding": "encoding"},
plugins=[{"class": "aiocache.plugins.TimingPlugin"}],
)
assert isinstance(cache.serializer, PickleSerializer)
assert cache.serializer.encoding == "encoding"
assert isinstance(cache.plugins[0], TimingPlugin)
class TestCache:
def test_cache_types(self):
assert Cache.MEMORY == SimpleMemoryCache
assert Cache.REDIS == RedisCache
assert Cache.MEMCACHED == MemcachedCache
@pytest.mark.parametrize("cache_type", CACHE_NAMES)
async def test_new(self, cache_type):
kwargs = {"a": 1, "b": 2}
cache_class = Cache.get_scheme_class(cache_type)
with patch("aiocache.{}.__init__".format(cache_class.__name__)) as init:
cache = Cache(cache_class, **kwargs)
assert isinstance(cache, cache_class)
init.assert_called_once_with(**kwargs)
def test_new_defaults_to_memory(self):
assert isinstance(Cache(), Cache.MEMORY)
@pytest.mark.parametrize("cache_type", (None, object))
def test_new_invalid_cache_raises(self, cache_type):
with pytest.raises(InvalidCacheType) as e:
Cache(cache_type)
assert str(e.value) == "Invalid cache type, you can only use {}".format(
list(AIOCACHE_CACHES.keys())
)
@pytest.mark.parametrize("scheme", CACHE_NAMES)
def test_get_scheme_class(self, scheme):
assert Cache.get_scheme_class(scheme) == AIOCACHE_CACHES[scheme]
def test_get_scheme_class_invalid(self):
with pytest.raises(InvalidCacheType):
Cache.get_scheme_class("http")
@pytest.mark.parametrize("scheme", CACHE_NAMES)
def test_from_url_returns_cache_from_scheme(self, scheme):
assert isinstance(Cache.from_url("{}://".format(scheme)), Cache.get_scheme_class(scheme))
@pytest.mark.parametrize(
"url,expected_args",
[
("redis://", {}),
("redis://localhost", {"endpoint": "localhost"}),
("redis://localhost/", {"endpoint": "localhost"}),
("redis://localhost:6379", {"endpoint": "localhost", "port": 6379}),
(
"redis://localhost/?arg1=arg1&arg2=arg2",
{"endpoint": "localhost", "arg1": "arg1", "arg2": "arg2"},
),
(
"redis://localhost:6379/?arg1=arg1&arg2=arg2",
{"endpoint": "localhost", "port": 6379, "arg1": "arg1", "arg2": "arg2"},
),
("redis:///?arg1=arg1", {"arg1": "arg1"}),
("redis:///?arg2=arg2", {"arg2": "arg2"}),
(
"redis://:password@localhost:6379",
{"endpoint": "localhost", "password": "password", "port": 6379},
),
(
"redis://:password@localhost:6379?password=pass",
{"endpoint": "localhost", "password": "password", "port": 6379},
),
],
)
def test_from_url_calls_cache_with_args(self, url, expected_args):
with patch("aiocache.factory.Cache", autospec=True) as mock:
Cache.from_url(url)
mock.assert_called_once_with(mock.get_scheme_class.return_value, **expected_args)
def test_calls_parse_uri_path_from_cache(self):
p_mock = Mock(spec_set=(), return_value={"arg1": "arg1"})
with patch("aiocache.factory.Cache", autospec=True) as mock:
mock.get_scheme_class.return_value.parse_uri_path = p_mock
Cache.from_url("redis:///")
mock.get_scheme_class.return_value.parse_uri_path.assert_called_once_with("/")
mock.assert_called_once_with(mock.get_scheme_class.return_value, arg1="arg1")
def test_from_url_invalid_protocol(self):
with pytest.raises(InvalidCacheType):
Cache.from_url("http://")
class TestCacheHandler:
@pytest.fixture(autouse=True)
def remove_caches(self):
caches._caches = {}
def test_add_new_entry(self):
alias = "memory"
config = {
"cache": "aiocache.SimpleMemoryCache",
"serializer": {"class": "aiocache.serializers.StringSerializer"},
}
caches.add(alias, config)
assert caches.get_config()[alias] == config
def test_add_updates_existing_entry(self):
alias = "memory"
config = {
"cache": "aiocache.SimpleMemoryCache",
"serializer": {"class": "aiocache.serializers.StringSerializer"},
}
caches.add(alias, {})
caches.add(alias, config)
assert caches.get_config()[alias] == config
def test_get_wrong_alias(self):
with pytest.raises(KeyError):
caches.get("wrong_cache")
with pytest.raises(KeyError):
caches.create("wrong_cache")
def test_reuse_instance(self):
assert caches.get("default") is caches.get("default")
def test_create_not_reuse(self):
assert caches.create("default") is not caches.create("default")
@pytest.mark.redis
def test_create_extra_args(self):
caches.set_config(
{
"default": {
"cache": "aiocache.RedisCache",
"endpoint": "127.0.0.9",
"db": 10,
"port": 6378,
}
}
)
cache = caches.create("default", namespace="whatever", endpoint="127.0.0.10", db=10)
assert cache.namespace == "whatever"
assert cache.endpoint == "127.0.0.10"
assert cache.db == 10
@pytest.mark.redis
def test_retrieve_cache(self):
caches.set_config(
{
"default": {
"cache": "aiocache.RedisCache",
"endpoint": "127.0.0.10",
"port": 6378,
"ttl": 10,
"serializer": {
"class": "aiocache.serializers.PickleSerializer",
"encoding": "encoding",
},
"plugins": [
{"class": "aiocache.plugins.HitMissRatioPlugin"},
{"class": "aiocache.plugins.TimingPlugin"},
],
}
}
)
cache = caches.get("default")
assert isinstance(cache, RedisCache)
assert cache.endpoint == "127.0.0.10"
assert cache.port == 6378
assert cache.ttl == 10
assert isinstance(cache.serializer, PickleSerializer)
assert cache.serializer.encoding == "encoding"
assert len(cache.plugins) == 2
@pytest.mark.redis
def test_retrieve_cache_new_instance(self):
caches.set_config(
{
"default": {
"cache": "aiocache.RedisCache",
"endpoint": "127.0.0.10",
"port": 6378,
"serializer": {
"class": "aiocache.serializers.PickleSerializer",
"encoding": "encoding",
},
"plugins": [
{"class": "aiocache.plugins.HitMissRatioPlugin"},
{"class": "aiocache.plugins.TimingPlugin"},
],
}
}
)
cache = caches.create("default")
assert isinstance(cache, RedisCache)
assert cache.endpoint == "127.0.0.10"
assert cache.port == 6378
assert isinstance(cache.serializer, PickleSerializer)
assert cache.serializer.encoding == "encoding"
assert len(cache.plugins) == 2
@pytest.mark.redis
def test_multiple_caches(self):
caches.set_config(
{
"default": {
"cache": "aiocache.RedisCache",
"endpoint": "127.0.0.10",
"port": 6378,
"serializer": {"class": "aiocache.serializers.PickleSerializer"},
"plugins": [
{"class": "aiocache.plugins.HitMissRatioPlugin"},
{"class": "aiocache.plugins.TimingPlugin"},
],
},
"alt": {"cache": "aiocache.SimpleMemoryCache"},
}
)
default = caches.get("default")
alt = caches.get("alt")
assert isinstance(default, RedisCache)
assert default.endpoint == "127.0.0.10"
assert default.port == 6378
assert isinstance(default.serializer, PickleSerializer)
assert len(default.plugins) == 2
assert isinstance(alt, SimpleMemoryCache)
def test_default_caches(self):
assert caches.get_config() == {
"default": {
"cache": "aiocache.SimpleMemoryCache",
"serializer": {"class": "aiocache.serializers.NullSerializer"},
}
}
def test_get_alias_config(self):
assert caches.get_alias_config("default") == {
"cache": "aiocache.SimpleMemoryCache",
"serializer": {"class": "aiocache.serializers.NullSerializer"},
}
def test_set_empty_config(self):
with pytest.raises(ValueError):
caches.set_config({})
def test_set_config_updates_existing_values(self):
assert not isinstance(caches.get("default").serializer, JsonSerializer)
caches.set_config(
{
"default": {
"cache": "aiocache.SimpleMemoryCache",
"serializer": {"class": "aiocache.serializers.JsonSerializer"},
}
}
)
assert isinstance(caches.get("default").serializer, JsonSerializer)
def test_set_config_removes_existing_caches(self):
caches.set_config(
{
"default": {"cache": "aiocache.SimpleMemoryCache"},
"alt": {"cache": "aiocache.SimpleMemoryCache"},
}
)
caches.get("default")
caches.get("alt")
assert len(caches._caches) == 2
caches.set_config(
{
"default": {"cache": "aiocache.SimpleMemoryCache"},
"alt": {"cache": "aiocache.SimpleMemoryCache"},
}
)
assert caches._caches == {}
def test_set_config_no_default(self):
with pytest.raises(ValueError):
caches.set_config(
{
"no_default": {
"cache": "aiocache.RedisCache",
"endpoint": "127.0.0.10",
"port": 6378,
"serializer": {"class": "aiocache.serializers.PickleSerializer"},
"plugins": [
{"class": "aiocache.plugins.HitMissRatioPlugin"},
{"class": "aiocache.plugins.TimingPlugin"},
],
}
}
)
@pytest.mark.redis
def test_ensure_plugins_order(self):
caches.set_config(
{
"default": {
"cache": "aiocache.RedisCache",
"plugins": [
{"class": "aiocache.plugins.HitMissRatioPlugin"},
{"class": "aiocache.plugins.TimingPlugin"},
],
}
}
)
cache = caches.get("default")
assert isinstance(cache.plugins[0], HitMissRatioPlugin)
cache = caches.create("default")
assert isinstance(cache.plugins[0], HitMissRatioPlugin)
|
