Fix unit tests

tests/rest/client/v1/test_presence.py

@@ -295,6 +295,9 @@ class PresenceEventStreamTestCase(unittest.TestCase):
 
         self.mock_datastore = hs.get_datastore()
         self.mock_datastore.get_app_service_by_token = Mock(return_value=None)
+        self.mock_datastore.get_app_service_by_user_id = Mock(
+            return_value=defer.succeed(None)
+        )
 
         def get_profile_displayname(user_id):
             return defer.succeed("Frank")