app = FastAPI()

security = HTTPBasic(realm="simple")


@app.get("/users/me")
def read_current_user(credentials: HTTPBasicCredentials = Security(security)):
    return {"username": credentials.username, "password": credentials.password}


client = TestClient(app)


def test_security_http_basic():
    response = client.get("/users/me", auth=("john", "secret"))

# Streaming

## Stream JSON Lines

To stream JSON Lines, declare the return type and use `yield` to return the data.

```python
@app.get("/items/stream")
async def stream_items() -> AsyncIterable[Item]:
    for item in items:
        yield item
```

## Server-Sent Events (SSE)

To stream Server-Sent Events, use `response_class=EventSourceResponse` and `yield` items from the endpoint.

    @TempDir
    File temporaryFolder

    @Subject AcceptedApiChangesJsonFileManager jsonFileManager = new AcceptedApiChangesJsonFileManager()

    def jsonFile

    def setup() {
        jsonFile = new File(temporaryFolder, 'acceptedChanges.json')
    }

    def "can clean existing API changes"() {
        given:
        jsonFile << existingAcceptedApiChanges()

        when:

from fastapi import Depends, FastAPI

app = FastAPI()


async def common_parameters(q: 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 commons


@app.get("/users/")
async def read_users(commons: dict = Depends(common_parameters)):

from fastapi import Depends, FastAPI

app = FastAPI()


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


@app.get("/items/")
async def read_items(commons: Annotated[dict, Depends(common_parameters)]):
    return commons


@app.get("/users/")
async def read_users(commons: Annotated[dict, Depends(common_parameters)]):

@pytest.fixture(name="client")
def get_client():
    from enum import Enum

    app = FastAPI()

    class PlatformRole(str, Enum):
        admin = "admin"
        user = "user"

    class OtherRole(str, Enum): ...

    class User(BaseModel):
        username: str
        role: PlatformRole | OtherRole

    @app.get("/users")
    async def get_user() -> User:

### 다른 유틸리티 함수 { #other-utility-functions }

직접 호출하는 다른 모든 유틸리티 함수는 일반 `def`나 `async def`로 생성될 수 있으며, FastAPI는 호출 방식에 영향을 주지 않습니다.

이는 FastAPI가 여러분을 위해 호출하는 함수(즉, *경로 처리 함수*와 의존성)와 대비됩니다.

import org.xmlunit.builder.Input
import spock.lang.IgnoreRest

class PublishPluginFuncTest extends AbstractGradleFuncTest {

    def setup() {
        // required for JarHell to work
        addSubProject(":libs:elasticsearch-core") << "apply plugin:'java'"
    }
    def "artifacts and tweaked pom is published"() {
        given:
        buildFile << """
            plugins {
                id 'elasticsearch.java'

from fastapi import FastAPI, Request
from fastapi.responses import JSONResponse


class UnicornException(Exception):
    def __init__(self, name: str):
        self.name = name


app = FastAPI()


@app.exception_handler(UnicornException)
async def unicorn_exception_handler(request: Request, exc: UnicornException):
    return JSONResponse(
        status_code=418,

    return data


def get_graphql_pr_edges(
    *, settings: Settings, after: str | None = None
) -> list[PullRequestEdge]:
    data = get_graphql_response(settings=settings, query=prs_query, after=after)
    graphql_response = PRsResponse.model_validate(data)
    return graphql_response.data.repository.pullRequests.edges


def get_pr_nodes(settings: Settings) -> list[PullRequestNode]: