code: def test_cluster_id_env(launcher, cluster_id):
      env = launcher.get_env()
      assert "IPP_CLUSTER_ID" in env
      assert env["IPP_CLUSTER_ID"] == cluster_id
  
imports: import logging
  import os
  import sys
  import time
  from subprocess import Popen
  import entrypoints
  import pytest
  from traitlets.config import Config
  from ipyparallel.cluster import launcher
label_desc: Use image node_id 10 for calling a global function with example usage: test_cluster_id_env(launcher, cluster_id) without return types