.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

假设现在包含**FastAPI** app的文件 `main.py`  有些其他**路径操作**。

有个 `GET` 操作会返回错误。

有个 `POST` 操作会返回一些错误。

所有*路径操作* 都需要一个`X-Token` 头。

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////

//// tab | Python 3.9+

```Python

We see that we are going to need some dependencies used in several places of the application.

So we put them in their own `dependencies` module (`app/dependencies.py`).

We will now use a simple dependency to read a custom `X-Token` header:

{* ../../docs_src/bigger_applications/app_an_py39/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip

We are using an invented header to simplify this example.

    discussion_id: Union[str, None] = None,
    comment_id: Union[str, None] = None,
    body: Union[str, None] = None,
) -> dict[str, Any]:
    headers = {"Authorization": f"token {settings.github_token.get_secret_value()}"}
    variables = {
        "after": after,
        "category_id": category_id,
        "discussion_number": discussion_number,
        "discussion_id": discussion_id,

  * Un parámetro de query.
  * Un header.
  * Una cookie.
* `http`: sistemas de autenticación HTTP estándar, incluyendo:
  * `bearer`: un header `Authorization` con un valor de `Bearer ` más un token. Esto se hereda de OAuth2.
  * Autenticación básica HTTP.
  * Digest HTTP, etc.
* `oauth2`: todas las formas de OAuth2 para manejar la seguridad (llamadas "flujos").

    }
  }

  /** See https://api.slack.com/methods/rtm.start. */
  public RtmStartResponse rtmStart(String accessToken) throws IOException {
    HttpUrl url = baseUrl.newBuilder("rtm.start")
        .addQueryParameter("token", accessToken)
        .build();
    Request request = new Request.Builder()
        .url(url)
        .build();
    Call call = httpClient.newCall(request);
    try (Response response = call.execute()) {

# Length of API access token.
api.access.token.length=60
# Whether API access token is required.
api.access.token.required=false
# API access token request parameter.
api.access.token.request.parameter=
# Permissions for API admin access.
api.admin.access.permissions=Radmin-api
# Accepted referers for API search.

### The abbr gives a full phrase { #the-abbr-gives-a-full-phrase }

* <abbr title="Getting Things Done">GTD</abbr>
* <abbr title="less than"><code>lt</code></abbr>
* <abbr title="XML Web Token">XWT</abbr>
* <abbr title="Parallel Server Gateway Interface">PSGI</abbr>

### The abbr gives an explanation { #the-abbr-gives-an-explanation }

                        tokStarted = true;
                        tokBuf.append(tok.trim());
                        break;
                }
            }

            // Handle case where end of token stream and
            // still got data
            if ((!exit) && (tokStarted)) {
                retVal = tokBuf.toString();
            }
        }

        return optional ? "?" + retVal : retVal;

By default this plugin uses HTTP 1.x. To enable HTTP2 use the `MINIO_POLICY_PLUGIN_ENABLE_HTTP2` environment variable.

## Request and Response

MinIO will make a `POST` request with a JSON body to the given plugin URL. If the auth token parameter is set, it will be sent as an authorization header.

The JSON body structure can be seen from this sample:

<details><summary>Request Body Sample</summary>

```json
{
  "input": {

Ele tem uma operação `GET` que pode retornar um erro.

Ele tem uma operação `POST` que pode retornar vários erros.

Ambas as *operações de rotas* requerem um cabeçalho `X-Token`.

{* ../../docs_src/app_testing/app_b_an_py310/main.py *}

### Arquivo de teste estendido { #extended-testing-file }

Você pode então atualizar `test_main.py` com os testes estendidos: