code: def test_empty(self, ray_start_stop):
      stdout, _ = _run_cmd("ray job list")
      assert "[]" in stdout
  
imports: from contextlib import contextmanager
  import ray
  import json
  import os
  import logging
  import sys
  import subprocess
  from typing import Optional, Tuple
  import pytest
label_desc: Use image node_id 1 for calling the TestJobList obj's underlying member method code with example usage: obj.test_empty(ray_start_stop) without return types