diff --git a/tests/util/test_expiring_cache.py b/tests/util/test_expiring_cache.py
index 50bc7702d2..49ffeebd0e 100644
--- a/tests/util/test_expiring_cache.py
+++ b/tests/util/test_expiring_cache.py
@@ -21,7 +21,7 @@ from tests.utils import MockClock
from .. import unittest
-class ExpiringCacheTestCase(unittest.TestCase):
+class ExpiringCacheTestCase(unittest.HomeserverTestCase):
def test_get_set(self):
clock = MockClock()
cache = ExpiringCache("test", clock, max_len=1)
diff --git a/tests/util/test_lrucache.py b/tests/util/test_lrucache.py
index 786947375d..0adb2174af 100644
--- a/tests/util/test_lrucache.py
+++ b/tests/util/test_lrucache.py
@@ -22,7 +22,7 @@ from synapse.util.caches.treecache import TreeCache
from .. import unittest
-class LruCacheTestCase(unittest.TestCase):
+class LruCacheTestCase(unittest.HomeserverTestCase):
def test_get_set(self):
cache = LruCache(1)
cache["key"] = "value"
@@ -84,7 +84,7 @@ class LruCacheTestCase(unittest.TestCase):
self.assertEquals(len(cache), 0)
-class LruCacheCallbacksTestCase(unittest.TestCase):
+class LruCacheCallbacksTestCase(unittest.HomeserverTestCase):
def test_get(self):
m = Mock()
cache = LruCache(1)
@@ -233,7 +233,7 @@ class LruCacheCallbacksTestCase(unittest.TestCase):
self.assertEquals(m3.call_count, 1)
-class LruCacheSizedTestCase(unittest.TestCase):
+class LruCacheSizedTestCase(unittest.HomeserverTestCase):
def test_evict(self):
cache = LruCache(5, size_callback=len)
cache["key1"] = [0]
diff --git a/tests/util/test_stream_change_cache.py b/tests/util/test_stream_change_cache.py
index 6857933540..13b753e367 100644
--- a/tests/util/test_stream_change_cache.py
+++ b/tests/util/test_stream_change_cache.py
@@ -1,11 +1,9 @@
-from mock import patch
-
from synapse.util.caches.stream_change_cache import StreamChangeCache
from tests import unittest
-class StreamChangeCacheTests(unittest.TestCase):
+class StreamChangeCacheTests(unittest.HomeserverTestCase):
"""
Tests for StreamChangeCache.
"""
@@ -54,7 +52,6 @@ class StreamChangeCacheTests(unittest.TestCase):
self.assertTrue(cache.has_entity_changed("user@foo.com", 0))
self.assertTrue(cache.has_entity_changed("not@here.website", 0))
- @patch("synapse.util.caches.CACHE_SIZE_FACTOR", 1.0)
def test_entity_has_changed_pops_off_start(self):
"""
StreamChangeCache.entity_has_changed will respect the max size and
|