diff --git a/tests/handlers/test_room.py b/tests/handlers/test_room.py
index 09d2a92e1..219a53c42 100644
--- a/tests/handlers/test_room.py
+++ b/tests/handlers/test_room.py
@@ -330,6 +330,8 @@ class RoomCreationTest(unittest.TestCase):
             datastore=NonCallableMock(spec_set=[
                 "store_room",
                 "snapshot_room",
+                "persist_event",
+                "get_joined_hosts_for_room",
             ]),
             http_client=NonCallableMock(spec_set=[]),
             notifier=NonCallableMock(spec_set=["on_new_room_event"]),
@@ -362,6 +364,10 @@ class RoomCreationTest(unittest.TestCase):
         ])
         self.room_member_handler = self.handlers.room_member_handler
 
+        def hosts(room):
+            return defer.succeed([])
+        self.datastore.get_joined_hosts_for_room.side_effect = hosts
+
     @defer.inlineCallbacks
     def test_room_creation(self):
         user_id = "@foo:red"
@@ -385,9 +391,3 @@ class RoomCreationTest(unittest.TestCase):
         self.assertTrue(self.state_handler.handle_new_event.called)
 
         self.assertTrue(self.federation.handle_new_event.called)
-        config_event = self.federation.handle_new_event.call_args[0][0]
-
-        self.assertEquals(RoomConfigEvent.TYPE, config_event.type)
-        self.assertEquals(room_id, config_event.room_id)
-        self.assertEquals(user_id, config_event.user_id)
-        self.assertEquals(config, config_event.content)
diff --git a/tests/utils.py b/tests/utils.py
index ea7d6893c..2c146eab5 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -234,6 +234,20 @@ class MemoryDataStore(object):
     def get_room_events_max_id(self):
         return 0  # TODO (erikj)
 
+    def get_send_event_level(self, room_id):
+        return defer.succeed(0)
+
+    def get_power_level(self, room_id, user_id):
+        return defer.succeed(0)
+
+    def get_add_state_level(self, room_id):
+        return defer.succeed(0)
+
+    def get_room_join_rule(self, room_id):
+        # TODO (erikj): This should be configurable
+        return defer.succeed("invite")
+
+
 def _format_call(args, kwargs):
     return ", ".join(
         ["%r" % (a) for a in args] +