{* ../../docs_src/encoder/tutorial001_py310.py hl[4,21] *}

У цьому прикладі вона конвертує Pydantic model у `dict`, а `datetime` у `str`.

Результат виклику цієї функції - це щось, що можна кодувати з використанням стандарту Python <a href="https://docs.python.org/3/library/json.html#json.dumps" class="external-link" target="_blank">`json.dumps()`</a>.

    response = client.post("/form/", data={"username": "Rick"})
    assert response.status_code == 200, response.text
    assert response.json() == "Rick"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/form/": {

        assert response.status_code == 200, response.text
        assert response.json() == {"result": 84.0}
    assert not ml_models, "ml_models should be empty"


def test_openapi_schema():
    with TestClient(app) as client:
        response = client.get("/openapi.json")
        assert response.status_code == 200, response.text
        assert response.json() == {
            "openapi": "3.1.0",

    assert response.headers["location"] == "https://www.youtube.com/watch?v=dQw4w9WgXcQ"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/portal": {
                "get": {
                    "summary": "Get Portal",

    assert response.status_code == 201, response.text
    assert response.json() == {"name": "Test Item"}


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {

    response = client.post("/pet/assignment", json={"pet_type": "cat", "meows": 5})
    assert response.status_code == 200, response.text
    assert response.json() == {"pet_type": "cat", "meows": 5}


def test_union_body_discriminator_annotated(client: TestClient) -> None:
    response = client.post("/pet/annotated", json={"pet_type": "dog", "barks": 3.5})
    assert response.status_code == 200, response.text

    assert response.json() == [{"name": "Foo", "price": 42}]


def test_get_users(client: TestClient):
    response = client.get("/users/")
    assert response.status_code == 200, response.text
    assert response.json() == [{"username": "johndoe"}]


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

    response = client.post(
        "/items/", json={"name": "Foo", "price": price, "description": "Some Foo"}
    )
    assert response.status_code == 200
    assert response.json() == {
        "name": "Foo",
        "price": 50.5,
        "description": "Some Foo",
        "tax": None,
    }


def test_post_with_no_data(client: TestClient):
    response = client.post("/items/", json={})
    assert response.status_code == 422

    ]
    response = client.post("/images/multiple", json=data)
    assert response.status_code == 200, response.text
    assert response.json() == data


def test_post_invalid_list_item(client: TestClient):
    data = [{"url": "not a valid url", "name": "Example"}]
    response = client.post("/images/multiple", json=data)
    assert response.status_code == 422, response.text
    assert response.json() == {
        "detail": [
            {

    assert response.status_code == 404
    assert response.json() == {"detail": "Item not found"}


def test_create_item():
    response = client.post(
        "/items/",
        headers={"X-Token": "coneofsilence"},
        json={"id": "foobar", "title": "Foo Bar", "description": "The Foo Barters"},
    )
    assert response.status_code == 200
    assert response.json() == {
        "id": "foobar",
        "title": "Foo Bar",