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Add concept of cache contexts

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This commit is contained in:
Erik Johnston 2016-08-19 11:18:26 +01:00
parent 5674ea3e6c
commit 4161ff2fc4
5 changed files with 278 additions and 20 deletions
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113
tests/util/test_lrucache.py
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@ -19,6 +19,8 @@ from .. import unittest
from synapse.util.caches.lrucache import LruCache
from synapse.util.caches.treecache import TreeCache
from mock import Mock
class LruCacheTestCase(unittest.TestCase):
@ -79,3 +81,114 @@ class LruCacheTestCase(unittest.TestCase):
cache["key"] = 1
cache.clear()
self.assertEquals(len(cache), 0)
class LruCacheCallbacksTestCase(unittest.TestCase):
def test_set(self):
m = Mock()
cache = LruCache(1)
cache.set("key", "value", m)
self.assertFalse(m.called)
cache.set("key", "value")
self.assertFalse(m.called)
cache.set("key", "value2")
self.assertEquals(m.call_count, 1)
cache.set("key", "value")
self.assertEquals(m.call_count, 1)
def test_pop(self):
m = Mock()
cache = LruCache(1)
cache.set("key", "value", m)
self.assertFalse(m.called)
cache.pop("key")
self.assertEquals(m.call_count, 1)
cache.set("key", "value")
self.assertEquals(m.call_count, 1)
cache.pop("key")
self.assertEquals(m.call_count, 1)
def test_del_multi(self):
m1 = Mock()
m2 = Mock()
m3 = Mock()
m4 = Mock()
cache = LruCache(4, 2, cache_type=TreeCache)
cache.set(("a", "1"), "value", m1)
cache.set(("a", "2"), "value", m2)
cache.set(("b", "1"), "value", m3)
cache.set(("b", "2"), "value", m4)
self.assertEquals(m1.call_count, 0)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 0)
self.assertEquals(m4.call_count, 0)
cache.del_multi(("a",))
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 1)
self.assertEquals(m3.call_count, 0)
self.assertEquals(m4.call_count, 0)
def test_clear(self):
m1 = Mock()
m2 = Mock()
cache = LruCache(5)
cache.set("key1", "value", m1)
cache.set("key2", "value", m2)
self.assertEquals(m1.call_count, 0)
self.assertEquals(m2.call_count, 0)
cache.clear()
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 1)
def test_eviction(self):
m1 = Mock(name="m1")
m2 = Mock(name="m2")
m3 = Mock(name="m3")
cache = LruCache(2)
cache.set("key1", "value", m1)
cache.set("key2", "value", m2)
self.assertEquals(m1.call_count, 0)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 0)
cache.set("key3", "value", m3)
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 0)
cache.set("key3", "value")
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 0)
cache.get("key2")
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 0)
cache.set("key1", "value", m1)
self.assertEquals(m1.call_count, 1)
self.assertEquals(m2.call_count, 0)
self.assertEquals(m3.call_count, 1)