from fastapi import FastAPI from fastapi.testclient import TestClient app = FastAPI( openapi_schema_exclude_unset=True, openapi_schema_exclude_none=False, ) @app.get( "/items", responses={ 200: {"content": {"application/json": {"example": {"id": None, "value": 50}}}} }, ) def get_items(): return {"id": "foo", "value": 50} client = TestClient(app) openapi_schema = { "openapi": "3.1.0", "info": {"title": "FastAPI", "version": "0.1.0"}, "paths": { "/items": { "get": { "responses": { "200": { "description": "Successful Response", "content": { "application/json": { "schema": {}, "example": {"id": None, "value": 50}, } }, } }, "summary": "Get Items", "operationId": "get_items_items_get", } } }, } def test_openapi_schema(): response = client.get("/openapi.json") assert response.status_code == 200, response.text assert response.json() == openapi_schema def test_default_get_items(): response = client.get("/items") assert response.status_code == 200, response.text assert response.json() == {"id": "foo", "value": 50}