code: def test_close(self):
      # clear _opener global variable
      self.addCleanup(urllib.request.urlcleanup)
  
      # calling .close() on urllib2's response objects should close the
      # underlying socket
      url = support.TEST_HTTP_URL
      with socket_helper.transient_internet(url):
          response = _urlopen_with_retry(url)
          sock = response.fp
          self.assertFalse(sock.closed)
          response.close()
          self.assertTrue(sock.closed)
  
imports: import errno
  import unittest
  from test import support
  from test.support import os_helper
  from test.support import socket_helper
  from test.support import ResourceDenied
  from test.test_urllib2 import sanepathname2url
  import os
  import socket
  import urllib.error
  import urllib.request
  import sys
label_desc: Use image node_id 1 for calling the CloseSocketTest obj's underlying member method code with example usage: obj.test_close() without return types