diff --git a/tests/storage/test_base.py b/tests/storage/test_base.py
index a0a24ce096..55fbffa7a2 100644
--- a/tests/storage/test_base.py
+++ b/tests/storage/test_base.py
@@ -38,8 +38,9 @@ class SQLBaseStoreTestCase(unittest.TestCase):
return defer.succeed(func(self.mock_txn, *args, **kwargs))
self.db_pool.runInteraction = runInteraction
- hs = HomeServer("test",
- db_pool=self.db_pool)
+ config = Mock()
+ config.event_cache_size = 1
+ hs = HomeServer("test", db_pool=self.db_pool, config=config)
self.datastore = SQLBaseStore(hs)
diff --git a/tests/util/test_lrucache.py b/tests/util/test_lrucache.py
new file mode 100644
index 0000000000..ab934bf928
--- /dev/null
+++ b/tests/util/test_lrucache.py
@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 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.lrucache import LruCache
+
+class LruCacheTestCase(unittest.TestCase):
+
+ def test_get_set(self):
+ cache = LruCache(1)
+ cache["key"] = "value"
+ self.assertEquals(cache.get("key"), "value")
+ self.assertEquals(cache["key"], "value")
+
+ def test_eviction(self):
+ cache = LruCache(2)
+ 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)
+ 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)
+ cache["key"] = 1
+ self.assertEquals(cache.pop("key"), 1)
+ self.assertEquals(cache.pop("key"), None)
+
+
diff --git a/tests/utils.py b/tests/utils.py
index 25c33492a5..39895c739f 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -41,6 +41,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, **kargs):
if config is None:
config = Mock()
config.signing_key = [MockKey()]
+ config.event_cache_size = 1
if datastore is None:
db_pool = SQLiteMemoryDbPool()
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