class_docstr: Integration version of job CLI test that ensures interaction with the
  following components are working as expected:
  1) Ray client: use of RAY_JOB_HEADERS and ray.init() in job_head.py
  2) Ray dashboard: `ray start --head`
class_docstr_tok: ["Integration","version","of","job","CLI","test","that","ensures","interaction","with","the","following","components","are","working","as","expected",":","1",")","Ray","client",":","use","of","RAY_JOB_HEADERS","and","ray.init","(",")","in","job_head.py","2",")","Ray","dashboard",":","`","ray","start","--","head","`"]
code: def test_ray_incorrectly_formatted_job_headers(
      self, ray_start_stop, ray_job_headers: str
  ):
      with set_env_var("RAY_JOB_HEADERS", ray_job_headers):
          _run_cmd("ray job submit -- echo hello", should_fail=True)
  
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 3 for calling the TestRayJobHeaders obj's underlying member method code with example usage: obj.test_ray_incorrectly_formatted_job_headers(ray_start_stop, ray_job_headers) without return types