async def create_files(
    files: Annotated[List[bytes], File(description="Multiple files as bytes")],
):
    return {"file_sizes": [len(file) for file in files]}


@app.post("/uploadfiles/")
async def create_upload_files(
    files: Annotated[
        List[UploadFile], File(description="Multiple files as UploadFile")
    ],
):
    return {"filenames": [file.filename for file in files]}


@app.get("/")
async def main():

        app = FastAPI()

        @app.post("/")
        async def root(username: str = Form()):
            return username  # pragma: nocover


def test_incorrect_multipart_installed_file_upload(monkeypatch):
    monkeypatch.delattr("multipart.multipart.parse_options_header", raising=False)
    with pytest.raises(RuntimeError, match=multipart_incorrect_install_error):
        app = FastAPI()

        @app.post("/")

from fastapi.datastructures import Default
from fastapi.testclient import TestClient


# TODO: remove when deprecating Pydantic v1
def test_upload_file_invalid():
    with pytest.raises(ValueError):
        UploadFile.validate("not a Starlette UploadFile")


def test_upload_file_invalid_pydantic_v2():
    with pytest.raises(ValueError):
        UploadFile._validate("not a Starlette UploadFile", {})

                        },
                    },
                }
            },
            "/uploadfile/": {
                "post": {
                    "summary": "Create Upload File",
                    "operationId": "create_upload_file_uploadfile__post",
                    "requestBody": {
                        "content": {
                            "multipart/form-data": {

                    "summary": "Create Upload Files",
                    "operationId": "create_upload_files_uploadfiles__post",
                    "requestBody": {
                        "content": {
                            "multipart/form-data": {
                                "schema": {
                                    "$ref": "#/components/schemas/Body_create_upload_files_uploadfiles__post"
                                }

                    "summary": "Create Upload Files",
                    "operationId": "create_upload_files_uploadfiles__post",
                    "requestBody": {
                        "content": {
                            "multipart/form-data": {
                                "schema": {
                                    "$ref": "#/components/schemas/Body_create_upload_files_uploadfiles__post"

    if not file:
        return {"message": "No file sent"}
    else:
        return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: Union[UploadFile, None] = None):
    if not file:
        return {"message": "No upload file sent"}
    else:

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: bytes = File()):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile):

app = FastAPI()


@app.post("/files/")
async def create_file(file: Annotated[bytes, File()]):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile):

app = FastAPI()


@app.post("/files/")
async def create_file(file: Annotated[bytes, File(description="A file read as bytes")]):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(
    file: Annotated[UploadFile, File(description="A file read as UploadFile")],
):