code: def test_path_operation():
      response = client.get("/items/")
      assert response.status_code == 200, response.text
      assert response.json() == {"id": "foo"}
  
imports: from fastapi import APIRouter, FastAPI
  from fastapi.testclient import TestClient
label_desc: Use image node_id 2 for calling a global function with example usage: test_path_operation() without return types