from __future__ import annotations from fastapi import Depends, FastAPI, Request from fastapi.testclient import TestClient from typing_extensions import Annotated from .utils import needs_py310 class Dep: def __call__(self, request: Request): return "test" @needs_py310 def test_stringified_annotations(): app = FastAPI() client = TestClient(app) @app.get("/test/") def call(test: Annotated[str, Depends(Dep())]): return {"test": test} response = client.get("/test") assert response.status_code == 200