client = TestClient(app)
    response = client.get("/multi-query", params={"foo": "5"})
    assert response.status_code == 200
    assert response.json() == 5

    response = client.get("/multi-query", params={"foo": "123"})
    assert response.status_code == 422

    if PYDANTIC_V2:
        response = client.get("/multi-query", params={"foo": "1"})