from fastapi import FastAPI from fastapi.testclient import TestClient from pydantic import BaseModel app = FastAPI() class MyModel(BaseModel): """ A model with a form feed character in the title. \f Text after form feed character. """ @app.get("/foo") def foo(v: MyModel): # pragma: no cover pass client = TestClient(app) def test_openapi(): response = client.get("/openapi.json") assert response.status_code == 200, response.text openapi_schema = response.json() assert openapi_schema["components"]["schemas"]["MyModel"]["description"] == ( "A model with a form feed character in the title.\n" )