def test_no_key(self):
        self.assertListEqual(
            list(BuildingSnapshot.objects.all().json_query('')),
            list(BuildingSnapshot.objects.none())
        )
We safely return an empty QS if nothing is queried.
dataset/ETHPy150Open buildingenergy/buildingenergy-platform/seed/managers/tests/test_json_manager.py/TestJsonManager.test_no_key