assert response.status_code == 200, response.text
    assert response.json() == [{"name": "Foo"}]


def test_get_openapi_json_default_url():
    response = client.get("/openapi.json")
    assert response.status_code == 404, response.text


def test_openapi_schema():
    response = client.get("/api/v1/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",

Це схоже на HTTP статус-коди 200 (від 200 до 299). Ці "200" статус-коди означають, що запит пройшов успішно.

Статус-коди в діапазоні 400 означають, що сталася помилка з боку клієнта.

Пам'ятаєте всі ці помилки **404 Not Found** (і жарти про них)?

## Використання `HTTPException`

Щоб повернути HTTP-відповіді з помилками клієнту, використовуйте `HTTPException`.

### Імпорт `HTTPException`

    client = TestClient(mod.app)
    return client


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/", 200, {"message": "Hello World"}),
        ("/nonexistent", 404, {"detail": "Not Found"}),
    ],
)
def test_get_path(client: TestClient, path, expected_status, expected_response):
    response = client.get(path)
    assert response.status_code == expected_status

    assert response.text == "This is a sample static file."


def test_static_files_not_found(client: TestClient):
    response = client.get("/static/non_existent_file.txt")
    assert response.status_code == 404, response.text


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",

from typing import Union

from fastapi import FastAPI
from fastapi.responses import FileResponse
from pydantic import BaseModel


class Item(BaseModel):
    id: str
    value: str


responses = {
    404: {"description": "Item not found"},
    302: {"description": "The item was moved"},
    403: {"description": "Not enough privileges"},
}


app = FastAPI()


@app.get(
    "/items/{item_id}",

@app.get("/items/{item_id}")
def get_item(item_id: str, username: str = Depends(get_username)):
    if item_id not in data:
        raise HTTPException(status_code=404, detail="Item not found")
    item = data[item_id]
    if item["owner"] != username:
        raise OwnerError(username)

Die Statuscodes im Bereich 400 bedeuten hingegen, dass es einen Fehler seitens des Clients gab.

Erinnern Sie sich an all diese **„404 Not Found“** Fehler (und Witze)?

## `HTTPException` verwenden { #use-httpexception }

    response = client.get("/hello/", follow_redirects=False)
    assert response.status_code == 200

    response = client.get("/hello", follow_redirects=False)

                                },
                            },
                            "description": "The GraphiQL integrated development environment.",
                        },
                        "404": {
                            "description": "Not found if GraphiQL or query via GET are not enabled.",
                        },
                    },
                    "summary": "Handle Http Get",
                },

        assert response.json() == snapshot({"ok": True})

        response = client.get(f"/heroes/{hero_id}")
        assert response.status_code == 404, response.text

        response = client.delete(f"/heroes/{hero_id}")
        assert response.status_code == 404, response.text
        assert response.json() == snapshot({"detail": "Hero not found"})


def test_openapi_schema(client: TestClient):