83 lines
2.8 KiB
Python
83 lines
2.8 KiB
Python
# 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 unittest.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, 10))
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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, 20))
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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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