app = FastAPI()


class CustomORJSONResponse(Response):
    media_type = "application/json"

    def render(self, content: Any) -> bytes:
        assert orjson is not None, "orjson must be installed"
        return orjson.dumps(content, option=orjson.OPT_INDENT_2)


@app.get("/", response_class=CustomORJSONResponse)
async def main():

from typing import Annotated

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: Annotated[bytes, File(description="A file read as bytes")]):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(
    file: Annotated[UploadFile, File(description="A file read as UploadFile")],
):

app = FastAPI()


def write_log(message: str):
    with open("log.txt", mode="a") as log:
        log.write(message)


def get_query(background_tasks: BackgroundTasks, q: str | None = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q


@app.post("/send-notification/{email}")
async def send_notification(

from docs_src.path_operation_advanced_configuration.tutorial003 import app

client = TestClient(app)


def test_get():
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [{"item_id": "Foo"}]


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

Você pode definir manipuladores de eventos (funções) que precisam ser executadas antes da aplicação inicializar, ou quando a aplicação estiver encerrando.

Essas funções podem ser declaradas com `async def` ou `def` normal.

### Evento `startup`

Para adicionar uma função que deve rodar antes da aplicação iniciar, declare-a com o evento `"startup"`:

```Python hl_lines="8"
{!../../docs_src/events/tutorial001.py!}

You can define event handlers (functions) that need to be executed before the application starts up, or when the application is shutting down.

These functions can be declared with `async def` or normal `def`.

### `startup` event

To add a function that should be run before the application starts, declare it with the event `"startup"`:

{* ../../docs_src/events/tutorial001.py hl[8] *}

from docs_src.response_model.tutorial005 import app

client = TestClient(app)


def test_read_item_name():
    response = client.get("/items/bar/name")
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "Bar", "description": "The Bar fighters"}


def test_read_item_public_data():
    response = client.get("/items/bar/public")

from docs_src.response_model.tutorial006 import app

client = TestClient(app)


def test_read_item_name():
    response = client.get("/items/bar/name")
    assert response.status_code == 200, response.text
    assert response.json() == {"name": "Bar", "description": "The Bar fighters"}


def test_read_item_public_data():
    response = client.get("/items/bar/public")

client = TestClient(app)


def test_post_file(tmp_path):
    path = tmp_path / "test.txt"
    path.write_bytes(b"<file content>")

    client = TestClient(app)
    with path.open("rb") as file:
        response = client.post("/files/", files={"file": file})
    assert response.status_code == 200, response.text
    assert response.json() == {"file_size": 14}


def test_post_upload_file(tmp_path):

            200,
            {"items": [{"item_name": "Bar"}], "q": "bar"},
        ),
    ],
)
def test_get(path, expected_status, expected_response, client: TestClient):
    response = client.get(path)
    assert response.status_code == expected_status
    assert response.json() == expected_response


@needs_py39
def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")