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# -*- coding: utf-8 -*-
# Copyright 2015, 2016 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.lrucache import LruCache
class LruCacheTestCase(unittest.TestCase):
def test_get_set(self):
cache = LruCache(1, 1)
cache[("key",)] = "value"
self.assertEquals(cache.get(("key",)), "value")
self.assertEquals(cache[("key",)], "value")
def test_eviction(self):
cache = LruCache(2, 1)
cache[(1,)] = 1
cache[(2,)] = 2
self.assertEquals(cache.get((1,)), 1)
self.assertEquals(cache.get((2,)), 2)
cache[(3,)] = 3
self.assertEquals(cache.get((1,)), None)
self.assertEquals(cache.get((2,)), 2)
self.assertEquals(cache.get((3,)), 3)
def test_setdefault(self):
cache = LruCache(1, 1)
self.assertEquals(cache.setdefault(("key",), 1), 1)
self.assertEquals(cache.get(("key",)), 1)
self.assertEquals(cache.setdefault(("key",), 2), 1)
self.assertEquals(cache.get(("key",)), 1)
def test_pop(self):
cache = LruCache(1, 1)
cache[("key",)] = 1
self.assertEquals(cache.pop(("key",)), 1)
self.assertEquals(cache.pop(("key",)), None)
def test_del_multi(self):
cache = LruCache(4, 2)
cache[("animal", "cat")] = "mew"
cache[("animal", "dog")] = "woof"
cache[("vehicles", "car")] = "vroom"
cache[("vehicles", "train")] = "chuff"
self.assertEquals(len(cache), 4)
self.assertEquals(cache.get(("animal", "cat")), "mew")
self.assertEquals(cache.get(("vehicles", "car")), "vroom")
cache.del_multi(("animal",))
self.assertEquals(len(cache), 2)
self.assertEquals(cache.get(("animal", "cat")), None)
self.assertEquals(cache.get(("animal", "dog")), None)
self.assertEquals(cache.get(("vehicles", "car")), "vroom")
self.assertEquals(cache.get(("vehicles", "train")), "chuff")
# Man from del_multi say "Yes".
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