///

## Валидация данных { #data-validation }

Если откроете браузер по адресу [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo), то увидите интересную HTTP-ошибку:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }

Si vous ouvrez dans votre navigateur une URL comme :

```
http://127.0.0.1:8000/items/foo-item
```

... sans ajouter le paramètre requis `needy`, vous verrez une erreur comme :

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

## 실행하기 { #run-it }

다음과 같이 평소처럼 테스트를 실행할 수 있습니다:

<div class="termy">

```console
$ pytest

---> 100%
```

</div>

## 자세히 보기 { #in-detail }

`@pytest.mark.anyio` 마커는 pytest에게 이 테스트 함수가 비동기로 호출되어야 한다고 알려줍니다:

{* ../../docs_src/async_tests/app_a_py310/test_main.py hl[7] *}

/// tip | 팁

En particulier, lorsque vous exécutez sur **Kubernetes**, vous ne voudrez probablement **pas** utiliser de workers et plutôt exécuter **un seul processus Uvicorn par conteneur**, mais je vous en parlerai plus en détail dans ce chapitre.

///

## Utiliser plusieurs workers { #multiple-workers }

Vous pouvez démarrer plusieurs workers avec l'option de ligne de commande `--workers` :

//// tab | `fastapi`

                        "title": "HTTPValidationError",
                        "type": "object",
                        "properties": {
                            "detail": {
                                "title": "Detail",
                                "type": "array",
                                "items": {
                                    "$ref": "#/components/schemas/ValidationError"

///

## Validação de dados { #data-validation }

Mas se você for no navegador para [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo), verá um bom erro HTTP:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }

///

## Datenvalidierung { #data-validation }

Wenn Sie aber im Browser [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo) besuchen, erhalten Sie eine hübsche HTTP-Fehlermeldung:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }

Minute(!0),this.second=a-60):this.second=a},mousewheel:function(b){if(!this.disableMousewheel){b.preventDefault(),b.stopPropagation();var c=b.originalEvent.wheelDelta||-b.originalEvent.detail,d=null;switch("mousewheel"===b.type?d=-1*b.originalEvent.wheelDelta:"DOMMouseScroll"===b.type&&(d=40*b.originalEvent.detail),d&&(b.preventDefault(),a(this).scrollTop(d+a(this).scrollTop())),this.highlightedUnit){case"minute":c>0?this.incrementMinute():this.decrementMinute(),this.highlightMinute();break;case...

///

## Veri Doğrulama { #data-validation }

Ancak tarayıcınızda [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo) adresine giderseniz, şuna benzer güzel bir HTTP hatası görürsünüz:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }

///

## Validación de datos { #data-validation }

Pero si vas al navegador en [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo), verás un bonito error HTTP de:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }