The `TestClient` is based on <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, and luckily, we can use it directly to test the API.

    * Другим примером может быть статус `201`, "Created". Он обычно используется после создания новой записи в базе данных.
    * Особый случай – `204`, "No Content".  Этот статус ответа используется, когда нет содержимого для возврата клиенту, и поэтому ответ не должен иметь тела.

* **`200`** 以上は「成功」のレスポンスのためのものです。これらは最も利用するであろうものです。
    * `200`はデフォルトのステータスコードで、すべてが「OK」であったことを意味します。
    * 別の例としては、`201`（Created）があります。これはデータベースに新しいレコードを作成した後によく使用されます。
    * 特殊なケースとして、`204`（No Content）があります。このレスポンスはクライアントに返すコンテンツがない場合に使用されます。そしてこのレスポンスはボディを持つことはできません。
* **`300`** 以上は「リダイレクト」のためのものです。これらのステータスコードを持つレスポンスは`304`（Not Modified）を除き、ボディを持つことも持たないこともできます。

!!! note
    If you use a response class with no media type, FastAPI will expect your response to have no content, so it will not document the response format in its generated OpenAPI docs.

## Use `ORJSONResponse`

models and inherit freely for each case.

You don't need to have a single data model per entity if that entity must be able to have different "states". As the case with the user "entity" with a state including `password`, `password_hash` and no password....

The spec also states that the `username` and `password` must be sent as form data (so, no JSON here).

### `scope`

The spec also says that the client can send another form field "`scope`".

The form field name is `scope` (in singular), but it is actually a long string with "scopes" separated by spaces.

!!! note "Technical Details"
    `threading.local` is used to have a "magic" variable that has a different value for each thread.

    This was useful in older frameworks designed to have one single thread per request, no more, no less.

    Using this, each request would have its own database connection/session, which is the actual final goal.

## Vote no FastAPI

* <a href="https://www.slant.co/options/34241/~fastapi-review" class="external-link" target="_blank">Vote no **FastAPI** no Slant</a>.
* <a href="https://alternativeto.net/software/fastapi/" class="external-link" target="_blank">Vote no **FastAPI** no AlternativeTo</a>.

## Responda perguntas no GitHub

* resources
* providers
* services
* injectables
* components

## **FastAPI** plug-ins

Integrations and "plug-ins" can be built using the **Dependency Injection** system. But in fact, there is actually **no need to create "plug-ins"**, as by using dependencies it's possible to declare an infinite number of integrations and interactions that become available to your *path operation functions*.

	E seu *path operation* tem um pequeno cadeado no canto superior direito que você pode clicar.

E se você clicar, você terá um pequeno formulário de autorização para digitar o `username` e `senha` (e outros campos opcionais):

<img src="/img/tutorial/security/image02.png">

!!! note "Nota"
	Não importa o que você digita no formulário, não vai funcionar ainda. Mas nós vamos chegar lá.