return pet

    @app.post("/pet/annotated")
    async def create_pet_annotated(pet: Annotated[Pet, Body()]):
        return pet

    client = TestClient(app)
    return client


def test_union_body_discriminator_assignment(client: TestClient) -> None:
    response = client.post("/pet/assignment", json={"pet_type": "cat", "meows": 5})
    assert response.status_code == 200, response.text