code: def test_remove_worker(self):
      worker_manager = WorkerManager("localhost")
      worker_manager.add_worker(self.worker1)
      worker_manager.add_worker(self.worker2)
      worker_manager.remove_worker(self.worker2.worker_address)
  
      self.assertEqual(
          set(
              worker_manager.worker_vacant_jobs[
                  self.worker1.worker_address
              ].values()
          ),
          set(self.worker1.initialized_jobs),
      )
      self.assertEqual(worker_manager.worker_num, 1)
  
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 3 for calling the ImportTest obj's underlying member method code with example usage: obj.test_remove_worker() without return types