From f2f179dce26f42ea0e691d17c60b297c63898923 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 16 Jan 2017 15:33:34 +0000 Subject: Add ExpiringCache tests --- tests/util/test_expiring_cache.py | 84 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 tests/util/test_expiring_cache.py (limited to 'tests') diff --git a/tests/util/test_expiring_cache.py b/tests/util/test_expiring_cache.py new file mode 100644 index 0000000000..31d24adb8b --- /dev/null +++ b/tests/util/test_expiring_cache.py @@ -0,0 +1,84 @@ +# -*- coding: utf-8 -*- +# Copyright 2017 OpenMarket Ltd +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +from .. import unittest + +from synapse.util.caches.expiringcache import ExpiringCache + +from tests.utils import MockClock + + +class ExpiringCacheTestCase(unittest.TestCase): + + def test_get_set(self): + clock = MockClock() + cache = ExpiringCache("test", clock, max_len=1) + + cache["key"] = "value" + self.assertEquals(cache.get("key"), "value") + self.assertEquals(cache["key"], "value") + + def test_eviction(self): + clock = MockClock() + cache = ExpiringCache("test", clock, max_len=2) + + cache["key"] = "value" + cache["key2"] = "value2" + self.assertEquals(cache.get("key"), "value") + self.assertEquals(cache.get("key2"), "value2") + + cache["key3"] = "value3" + self.assertEquals(cache.get("key"), None) + self.assertEquals(cache.get("key2"), "value2") + self.assertEquals(cache.get("key3"), "value3") + + def test_iterable_eviction(self): + clock = MockClock() + cache = ExpiringCache("test", clock, max_len=5, iterable=True) + + cache["key"] = [1] + cache["key2"] = [2, 3] + cache["key3"] = [4, 5] + + self.assertEquals(cache.get("key"), [1]) + self.assertEquals(cache.get("key2"), [2, 3]) + self.assertEquals(cache.get("key3"), [4, 5]) + + cache["key4"] = [6, 7] + self.assertEquals(cache.get("key"), None) + self.assertEquals(cache.get("key2"), None) + self.assertEquals(cache.get("key3"), [4, 5]) + self.assertEquals(cache.get("key4"), [6, 7]) + + def test_time_eviction(self): + clock = MockClock() + cache = ExpiringCache("test", clock, expiry_ms=1000) + cache.start() + + cache["key"] = 1 + clock.advance_time(0.5) + cache["key2"] = 2 + + self.assertEquals(cache.get("key"), 1) + self.assertEquals(cache.get("key2"), 2) + + clock.advance_time(0.9) + self.assertEquals(cache.get("key"), None) + self.assertEquals(cache.get("key2"), 2) + + clock.advance_time(1) + self.assertEquals(cache.get("key"), None) + self.assertEquals(cache.get("key2"), None) -- cgit 1.4.1