code: def test_ipc_passive(self):
      if fiber.config.default_backend == "kubernetes":
          # ipc passive is not very useful for current setup, consider disable this completely
          pytest.skip("skipped because current backend is kubernetes")
      # worker process waits for connection from master process
      fiber_config.ipc_active = False
      try:
          p = Process(
              target=func_add, args=(42, 89), name="test_ipc_passive"
          )
          p.start()
          p.join()
          assert 0 == p.exitcode
      finally:
          fiber_config.ipc_active = True
  
imports: import pytest
  import time
  import math
  import select
  import fiber
  import docker
  import requests
  from fiber import Process
  from fiber.docker_backend import Backend
  import fiber.config
label_desc: Use image node_id 16 for calling the TestBasic obj's underlying member method code with example usage: obj.test_ipc_passive() without return types