import anyio
import pytest
from fastapi import FastAPI, File
from fastapi.testclient import TestClient
from starlette.datastructures import UploadFile as StarletteUploadFile


def test_list_bytes_file_preserves_order(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    app = FastAPI()

    @app.post("/upload")
    async def upload(files: Annotated[list[bytes], File()]):