84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from mock import Mock
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from synapse.util.caches.ttlcache import TTLCache
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from tests import unittest
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class CacheTestCase(unittest.TestCase):
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def setUp(self):
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self.mock_timer = Mock(side_effect=lambda: 100.0)
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self.cache = TTLCache("test_cache", self.mock_timer)
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def test_get(self):
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"""simple set/get tests"""
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self.cache.set('one', '1', 10)
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self.cache.set('two', '2', 20)
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self.cache.set('three', '3', 30)
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self.assertEqual(len(self.cache), 3)
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self.assertTrue('one' in self.cache)
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self.assertEqual(self.cache.get('one'), '1')
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self.assertEqual(self.cache['one'], '1')
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self.assertEqual(self.cache.get_with_expiry('one'), ('1', 110))
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self.assertEqual(self.cache._metrics.hits, 3)
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self.assertEqual(self.cache._metrics.misses, 0)
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self.cache.set('two', '2.5', 20)
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self.assertEqual(self.cache['two'], '2.5')
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self.assertEqual(self.cache._metrics.hits, 4)
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# non-existent-item tests
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self.assertEqual(self.cache.get('four', '4'), '4')
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self.assertIs(self.cache.get('four', None), None)
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with self.assertRaises(KeyError):
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self.cache['four']
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with self.assertRaises(KeyError):
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self.cache.get('four')
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with self.assertRaises(KeyError):
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self.cache.get_with_expiry('four')
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self.assertEqual(self.cache._metrics.hits, 4)
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self.assertEqual(self.cache._metrics.misses, 5)
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def test_expiry(self):
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self.cache.set('one', '1', 10)
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self.cache.set('two', '2', 20)
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self.cache.set('three', '3', 30)
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self.assertEqual(len(self.cache), 3)
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self.assertEqual(self.cache['one'], '1')
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self.assertEqual(self.cache['two'], '2')
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# enough for the first entry to expire, but not the rest
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self.mock_timer.side_effect = lambda: 110.0
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self.assertEqual(len(self.cache), 2)
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self.assertFalse('one' in self.cache)
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self.assertEqual(self.cache['two'], '2')
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self.assertEqual(self.cache['three'], '3')
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self.assertEqual(self.cache.get_with_expiry('two'), ('2', 120))
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self.assertEqual(self.cache._metrics.hits, 5)
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self.assertEqual(self.cache._metrics.misses, 0)
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