class OtherItem(BaseModel):
    price: int


@app.post("/items/")
def save_union_body(item: Union[OtherItem, Item]):
    return {"item": item}


client = TestClient(app)


def test_post_other_item():
    response = client.post("/items/", json={"price": 100})
    assert response.status_code == 200, response.text
    assert response.json() == {"item": {"price": 100}}


def test_post_item():