def test__get_related_model_for_field(self):
        properties = SQLAlchemyFilterBackend._get_properties_for_model(Waiter)
        restaurant = properties['restaurant']
        model = SQLAlchemyFilterBackend._get_related_model_for_field(
            restaurant)

        assert model is Restaurant
    def test__get_related_model_for_field(self):
        properties = SQLAlchemyFilterBackend._get_properties_for_model(Waiter)
        restaurant = properties['restaurant']
        model = SQLAlchemyFilterBackend._get_related_model_for_field(restaurant)

        assert model is Restaurant