def test_on_new_event(self): eun = EventUpdatesNamespace(self.environ, self.ns_name, self.request) eun.emit = Mock() eun.on_new_event("abc", "def") self.assertEqual(eun.emit.call_args[0][0], "new_event") self.assertEqual(eun.emit.call_args[0][1], "abc") self.assertEqual(eun.emit.call_args[0][2], "def")