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):
    path = tmp_path / "test.txt"

```

## `File` 매개변수 정의

`Body` 및 `Form` 과 동일한 방식으로 파일의 매개변수를 생성합니다:

```Python hl_lines="7"
{!../../../docs_src/request_files/tutorial001.py!}
```

!!! info "정보"
    `File` 은 `Form` 으로부터 직접 상속된 클래스입니다.

    하지만 `fastapi`로부터 `Query`, `Path`, `File` 등을 임포트 할 때, 이것들은 특별한 클래스들을 반환하는 함수라는 것을 기억하기 바랍니다.

!!! tip "팁"
    File의 본문을 선언할 때, 매개변수가 쿼리 매개변수 또는 본문(JSON) 매개변수로 해석되는  것을 방지하기 위해 `File` 을 사용해야합니다.

👆 💪 🔬 📁 📂 👩‍💻 ⚙️ `File`.

!!! info
    📨 📂 📁, 🥇 ❎ <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

    🤶 Ⓜ. `pip install python-multipart`.

    👉 ↩️ 📂 📁 📨 "📨 💽".

## 🗄 `File`

🗄 `File` &amp; `UploadFile` ⚪️➡️ `fastapi`:

```Python hl_lines="1"
{!../../../docs_src/request_files/tutorial001.py!}
```

## 🔬 `File` 🔢

And your **FastAPI** application might also be composed of several files/modules, etc.

### **FastAPI** app file

Let's say you have a file structure as described in [Bigger Applications](bigger-applications.md){.internal-link target=_blank}:

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

In the file `main.py` you have your **FastAPI** app:

The only changes here are in the new testing file.

Your normal dependency `get_db()` would return a database session.

In the test, you could use a dependency override to return your *custom* database session instead of the one that would be used normally.

In this example we'll create a temporary database only for the tests.

## File structure

We create a new file at `sql_app/tests/test_sql_app.py`.

Вы можете определять файлы и поля формы одновременно, используя `File` и `Form`.

!!! info "Дополнительная информация"
    Чтобы получать загруженные файлы и/или данные форм, сначала установите <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

    Например: `pip install python-multipart`.

## Импортируйте `File` и `Form`

=== "Python 3.9+"

    ```Python hl_lines="3"

That command created a file `docs/ht/mkdocs.yml` with a simple config that inherits everything from the `en` version:

```yaml
INHERIT: ../en/mkdocs.yml
```

!!! tip
    You could also simply create that file with those contents manually.

That command also created a dummy file `docs/ht/index.md` for the main page, you can start by translating that one.

Then create a file `traefik.toml` with:

```TOML hl_lines="3"
[entryPoints]
  [entryPoints.http]
    address = ":9999"

[providers]
  [providers.file]
    filename = "routes.toml"
```

This tells Traefik to listen on port 9999 and to use another file `routes.toml`.

!!! tip

  "message": "Deep Learning FTW!"
}
```

## Path parameters containing paths

Let's say you have a *path operation* with a path `/files/{file_path}`.

But you need `file_path` itself to contain a *path*, like `home/johndoe/myfile.txt`.

So, the URL for that file would be something like: `/files/home/johndoe/myfile.txt`.

### OpenAPI support

```JSON
{
  "model_name": "alexnet",
  "message": "Deep Learning FTW!"
}
```

## Path-параметры, содержащие пути

Предположим, что есть *операция пути* с путем `/files/{file_path}`.

Но вам нужно, чтобы `file_path` сам содержал *путь*, например, `home/johndoe/myfile.txt`.

Тогда URL для этого файла будет такой: `/files/home/johndoe/myfile.txt`.

### Поддержка OpenAPI