def test_path_operation(client: TestClient):
    response = client.get("/items/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"id": "foo", "value": "there goes my hero"}


@workdir_lock
def test_path_operation_img(client: TestClient):
    shutil.copy("./docs/en/docs/img/favicon.png", "./image.png")
    response = client.get("/items/foo?img=1")
    assert response.status_code == 200, response.text

Neste caso o **FastAPI** esperará um corpo como:

```JSON hl_lines="2"
{
    "item": {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2
    }
}
```

ao invés de:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

## Recapitulando { #recap }

En este caso, **FastAPI** esperará un cuerpo como:

```JSON hl_lines="2"
{
    "item": {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2
    }
}
```

en lugar de:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

## Resumen { #recap }

def test_path_operation(client: TestClient):
    response = client.get("/items/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"id": "foo", "value": "there goes my hero"}


@workdir_lock
def test_path_operation_img(client: TestClient):
    shutil.copy("./docs/en/docs/img/favicon.png", "./image.png")
    response = client.get("/items/foo?img=1")
    assert response.status_code == 200, response.text

from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI(swagger_ui_oauth2_redirect_url=None)


@app.get("/items/")
async def read_items():
    return {"id": "foo"}


client = TestClient(app)


def test_swagger_ui():
    response = client.get("/docs")
    assert response.status_code == 200, response.text
    assert response.headers["content-type"] == "text/html; charset=utf-8"

---

回到前面的程式碼範例，**FastAPI** 會：

* 驗證 `GET` 與 `PUT` 請求的路徑中是否包含 `item_id`。
* 驗證 `GET` 與 `PUT` 請求中的 `item_id` 是否為 `int` 型別。
    * 如果不是，客戶端會看到清楚有用的錯誤。
* 在 `GET` 請求中檢查是否有名為 `q` 的可選查詢參數（如 `http://127.0.0.1:8000/items/foo?q=somequery`）。
    * 因為 `q` 參數被宣告為 `= None`，所以它是可選的。
    * 若沒有 `None`，則它會是必填（就像 `PUT` 時的 body）。
* 對於 `/items/{item_id}` 的 `PUT` 請求，以 JSON 讀取 body：
    * 檢查是否有必填屬性 `name`，且為 `str`。
    * 檢查是否有必填屬性 `price`，且為 `float`。

El valor del parámetro de path `item_id` se pasará a tu función como el argumento `item_id`.

Así que, si ejecutas este ejemplo y vas a [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo), verás un response de:

```JSON
{"item_id":"foo"}
```

## Parámetros de path con tipos { #path-parameters-with-types }

def test_path_param_foo():
    response = client.get("/path/param/foo")
    assert response.status_code == 200
    assert response.json() == "foo"


def test_path_param_minlength_foo():
    response = client.get("/path/param-minlength/foo")
    assert response.status_code == 200
    assert response.json() == "foo"


def test_path_param_minlength_fo():

O valor do parâmetro de path `item_id` será passado para a sua função como o argumento `item_id`.

Então, se você executar este exemplo e acessar [http://127.0.0.1:8000/items/foo](http://127.0.0.1:8000/items/foo), você verá uma resposta:

```JSON
{"item_id":"foo"}
```

## Parâmetros de path com tipos { #path-parameters-with-types }

Você pode declarar o tipo de um parâmetro de path na função, usando as anotações de tipo padrão do Python:

            then this value modifies the directory where the files will be copied.
            For example, if a Java module name is "foo.biz", then the {@code foo/bar.properties}
            resource file will be copied as {@code foo.biz/foo/bar.properties}.</p>

            <p>This element can be combined with the {@code targetVersion} element for specifying sources,