code: def test_update_job(self):
      worker_manager = WorkerManager("localhost")
      worker_manager.add_worker(self.worker1)
      worker_manager.add_worker(self.worker2)
  
      job = InitializedJob(
          job_address="172.18.182.39:{}".format(9245),
          worker_heartbeat_address="172.18.182.39:48724",
          ping_heartbeat_address="172.18.182.39:48726",
          worker_address="172.18.182.39:478727",
          pid=1234,
      )
      worker_manager.update_job(
          "172.18.182.39:2234", job, "172.18.182.39:8002"
      )
  
      current_job_address = set(
          worker_manager.worker_vacant_jobs["172.18.182.39:8002"].keys()
      )
      self.assertEqual(
          current_job_address,
          set(
              [
                  "172.18.182.39:9245",
                  "172.18.182.39:2235",
                  "172.18.182.39:2236",
                  "172.18.182.39:2237",
                  "172.18.182.39:2238",
              ]
          ),
      )
      job_pool_address = set(
          list(
              worker_manager.worker_vacant_jobs[
                  self.worker1.worker_address
              ].keys()
          )
          + list(
              worker_manager.worker_vacant_jobs[
                  self.worker2.worker_address
              ].keys()
          )
      )
      self.assertEqual(
          job_pool_address,
          set(
              [
                  "172.18.182.39:9245",
                  "172.18.182.39:2235",
                  "172.18.182.39:2236",
                  "172.18.182.39:2237",
                  "172.18.182.39:2238",
                  "172.18.182.39:1234",
                  "172.18.182.39:1235",
                  "172.18.182.39:1236",
                  "172.18.182.39:1237",
                  "172.18.182.39:1238",
              ]
          ),
      )
  
      worker_manager.remove_worker(self.worker2.worker_address)
      self.assertEqual(5, len(self.worker1.initialized_jobs))
  
file_path: PARL/parl/remote/tests/worker_manager_test.py
imports: import unittest
  import socket
  from parl.remote.worker_manager import WorkerManager
  from parl.remote.message import InitializedWorker, InitializedJob, AllocatedCpu, AllocatedGpu
label_desc: Use image node_id 5 for calling the ImportTest obj's underlying member method code with example usage: obj.test_update_job() without return types