def METHOD_NAME(self, import_string_mock):
    import_string_mock.return_value.get_address.return_value = {}
    response = self.client.get(
        f"{reverse('api:get-street-name-and-city-list')}?postcode=1015CJ&house_number=1"
    )
    self.assertEqual(response.status_code, 200)
    self.assertEqual(response.json(), {})