import pytest from fastapi import FastAPI from fastapi.testclient import TestClient app = FastAPI() @app.get("/a", responses={"hello": {"description": "Not a valid additional response"}}) async def a(): pass # pragma: no cover openapi_schema = { "openapi": "3.1.0", "info": {"title": "FastAPI", "version": "0.1.0"}, "paths": { "/a": { "get": { "responses": { # this is how one would imagine the openapi schema to be # but since the key is not valid, openapi.utils.get_openapi will raise ValueError "hello": {"description": "Not a valid additional response"}, "200": { "description": "Successful Response", "content": {"application/json": {"schema": {}}}, }, }, "summary": "A", "operationId": "a_a_get", } } }, } client = TestClient(app) def test_openapi_schema(): with pytest.raises(ValueError): client.get("/openapi.json")