code: def test_stop_single():
      requests = []
      with IPCServer(requests.append) as server, SingleRequestHandler(
          server
      ):
          server.timeout = 1
          server.stop()
          with pytest.raises(socket.error):
              send_request(server.port, 5)
      assert not requests
  
imports: import contextlib
  import pickle
  import random
  import socket
  import sys
  import threading
  import time
  import psutil
  import pytest
  import retrying
  from fiftyone.service.ipc import IPCServer, send_request
  from fiftyone.service.util import find_processes_by_args, get_listening_tcp_ports, normalize_wrapper_process, send_ipc_message
label_desc: Use image node_id 9 for calling a global function with example usage: test_stop_single() without return types