[
        ("/items", 200, {"q": None, "skip": 0, "limit": 100}),
        ("/items?q=foo", 200, {"q": "foo", "skip": 0, "limit": 100}),
        ("/items?q=foo&skip=5", 200, {"q": "foo", "skip": 5, "limit": 100}),
        ("/items?q=foo&skip=5&limit=30", 200, {"q": "foo", "skip": 5, "limit": 30}),
        ("/users", 200, {"q": None, "skip": 0, "limit": 100}),
    ],
)

        ),
        (
            "/router-depends/?q=foo",
            200,
            {"in": "router-depends", "params": {"q": "foo", "skip": 5, "limit": 10}},
        ),
        (
            "/router-depends/?q=foo&skip=100&limit=200",
            200,
            {"in": "router-depends", "params": {"q": "foo", "skip": 5, "limit": 10}},
        ),

    def __init__(self, q: Union[str, None] = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons: CommonQueryParams = Depends()):
    response = {}
    if commons.q:
        response.update({"q": commons.q})
    items = fake_items_db[commons.skip : commons.skip + commons.limit]
    response.update({"items": items})

    def __init__(self, q: Union[str, None] = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons: CommonQueryParams = Depends(CommonQueryParams)):
    response = {}
    if commons.q:
        response.update({"q": commons.q})
    items = fake_items_db[commons.skip : commons.skip + commons.limit]
    response.update({"items": items})

from typing import Union

from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


async def common_parameters(
    q: Union[str, None] = None, skip: int = 0, limit: int = 100
):
    return {"q": q, "skip": skip, "limit": limit}


@app.get("/items/")
async def read_items(commons: dict = Depends(common_parameters)):
    return {"message": "Hello Items!", "params": commons}

    def __init__(self, q: Union[str, None] = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons=Depends(CommonQueryParams)):
    response = {}
    if commons.q:
        response.update({"q": commons.q})
    items = fake_items_db[commons.skip : commons.skip + commons.limit]
    response.update({"items": items})

Im obigen Beispiel haben sie die Defaultwerte `skip=0` und `limit=10`.

Wenn Sie also zur URL:

```
http://127.0.0.1:8000/items/
```

gehen, so ist das das gleiche wie die URL:

```
http://127.0.0.1:8000/items/?skip=0&limit=10
```

Aber wenn Sie zum Beispiel zu:

```
http://127.0.0.1:8000/items/?skip=20
```

gehen, werden die Parameterwerte Ihrer Funktion sein:

    assert response.status_code == 200
    assert response.json() == {
        "item_id": "foo",
        "needy": "very",
        "skip": 0,
        "limit": None,
    }


def test_foo_no_needy(client: TestClient):
    response = client.get("/items/foo?skip=a&limit=b")
    assert response.status_code == 422
    assert response.json() == {
        "detail": [
            {
                "type": "missing",

        "params": {"q": None, "skip": 5, "limit": 10},
    }


def test_override_in_users_with_q(test_module: ModuleType):
    client = test_module.client
    response = client.get("/users/?q=foo")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "message": "Hello Users!",
        "params": {"q": "foo", "skip": 5, "limit": 10},
    }

        ),
        (
            "/items?q=foo&skip=1",
            200,
            {"items": [{"item_name": "Bar"}, {"item_name": "Baz"}], "q": "foo"},
        ),
        (
            "/items?q=bar&limit=2",
            200,
            {"items": [{"item_name": "Foo"}, {"item_name": "Bar"}], "q": "bar"},
        ),
        (
            "/items?q=bar&skip=1&limit=1",
            200,