56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
import pytest
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from mock import patch
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from data.cache import InMemoryDataModelCache, NoopDataModelCache, MemcachedModelCache
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from data.cache.cache_key import CacheKey
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class MockClient(object):
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def __init__(self, server, **kwargs):
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self.data = {}
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def get(self, key, default=None):
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return self.data.get(key, default)
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def set(self, key, value, expire=None):
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self.data[key] = value
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@pytest.mark.parametrize('cache_type', [
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(NoopDataModelCache),
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(InMemoryDataModelCache),
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])
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def test_caching(cache_type):
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key = CacheKey('foo', '60m')
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cache = cache_type()
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# Perform two retrievals, and make sure both return.
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assert cache.retrieve(key, lambda: {'a': 1234}) == {'a': 1234}
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assert cache.retrieve(key, lambda: {'a': 1234}) == {'a': 1234}
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def test_memcache():
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key = CacheKey('foo', '60m')
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with patch('data.cache.impl.Client', MockClient):
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cache = MemcachedModelCache(('127.0.0.1', '-1'))
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assert cache.retrieve(key, lambda: {'a': 1234}) == {'a': 1234}
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assert cache.retrieve(key, lambda: {'a': 1234}) == {'a': 1234}
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def test_memcache_should_cache():
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key = CacheKey('foo', None)
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def sc(value):
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return value['a'] != 1234
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with patch('data.cache.impl.Client', MockClient):
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cache = MemcachedModelCache(('127.0.0.1', '-1'))
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assert cache.retrieve(key, lambda: {'a': 1234}, should_cache=sc) == {'a': 1234}
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# Ensure not cached since it was `1234`.
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assert cache._get_client().get(key.key) is None
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# Ensure cached.
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assert cache.retrieve(key, lambda: {'a': 2345}, should_cache=sc) == {'a': 2345}
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assert cache._get_client().get(key.key) is not None
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assert cache.retrieve(key, lambda: {'a': 2345}, should_cache=sc) == {'a': 2345}
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