def test_debug_string_response(self):
        class MockResponse:
            def json(self):
                import json
                return json.dumps({'mock': 'mock'})

        exception = FirebaseError('code', 'message', None, MockResponse())
        self.assertEqual(TBANSHelper._debug_string(exception),
                         'code / message / {"mock": "mock"}')
 def test_debug_string(self):
     exception = FirebaseError('code', 'message')
     self.assertEqual(TBANSHelper._debug_string(exception),
                      'code / message')