code: def test_incorrect_token():
      response = client.get(
          "/items", headers={"Authorization": "Notexistent testtoken"}
      )
      assert response.status_code == 200, response.text
      assert response.json() == {"msg": "Create an account first"}
  
imports: from typing import Optional
  from fastapi import FastAPI, Security
  from fastapi.security import OAuth2PasswordBearer
  from fastapi.testclient import TestClient
label_desc: Use image node_id 3 for calling a global function with example usage: test_incorrect_token() without return types