code: def test_logout(client, auth):
      auth.login()
  
      with client:
          auth.logout()
          assert "user_id" not in session
  
file_path: flask-sqlalchemy/examples/flaskr/tests/test_auth.py
imports: import pytest
  from flask import g
  from flask import session
  from flaskr import db
  from flaskr.auth.models import User
label_desc: Use image node_id 6 for calling a global function with example usage: test_logout(client, auth) without return types