def test_model_list_order_related(self):
        """
        Test Model order related field on lists
        """
        client = self.app.test_client()
        self.browser_login(client, USERNAME_ADMIN, PASSWORD_ADMIN)

        rv = client.get(
            "/model2view/list?_oc_Model2View=group.field_string&_od_Model2View=asc",
            follow_redirects=True,
        )
        self.assertEqual(rv.status_code, 200)

        Test Model order related field on lists
        
tests/test_mvc.py