"loc": ["body", "lastname"],
                "msg": "Field required",
                "input": {"tags": ["foo", "bar"], "with": "nothing"},
            },
        ]
    }


def test_extra_param_single():
    response = client.post(
        "/form-extra-allow/",
        data={
            "param": "123",
            "extra_param": "456",
        },
    )