code: def test_sharing_pipe_with_multiprocessing(self):
      reader, writer = Pipe()
      # The contaxt is 'spawn' because fork based mp won't trigger ZConnection's
      # initialization.
      ctx = mp.get_context("spawn")
      p = ctx.Process(target=write_pipe, args=(writer, b"hello"))
      p.start()
      msg = reader.recv()
      p.join()
      assert msg == b"hello"
  
imports: import fiber
  import pickle
  import time
  import pytest
  import docker
  import collections
  import multiprocessing
  from fiber.queues import Pipe, SimpleQueue
  from fiber.socket import Socket
label_desc: Use image node_id 3 for calling the TestQueue obj's underlying member method code with example usage: obj.test_sharing_pipe_with_multiprocessing() without return types