code: def test_pipe_duplex2(self):
      conn1, conn2 = Pipe(duplex=True)
  
      conn2.send(b"hi")
      data = conn1.recv()
      assert data == b"hi"
  
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 6 for calling the TestQueue obj's underlying member method code with example usage: obj.test_pipe_duplex2() without return types