client = TestClient(app)
    response = client.post("/optional-list-str")
    assert response.status_code == 200, response.text
    assert response.json() == {"p": None}


def test_model_optional_list_str_missing():
    client = TestClient(app)
    response = client.post("/model-optional-list-str")
    assert response.status_code == 422, response.text
    assert response.json() == {
        "detail": [
            {