code: def test_broken_pipe_error(self):
      cmd = [sys.executable, "-m", "json.tool"]
      proc = subprocess.Popen(
          cmd, stdout=subprocess.PIPE, stdin=subprocess.PIPE
      )
      # bpo-39828: Closing before json.tool attempts to write into stdout.
      proc.stdout.close()
      proc.communicate(b'"{}"')
      self.assertEqual(proc.returncode, errno.EPIPE)
  
imports: import errno
  import os
  import sys
  import textwrap
  import unittest
  import subprocess
  from test import support
  from test.support import os_helper
  from test.support.script_helper import assert_python_ok
label_desc: Use image node_id 16 for calling the TestTool obj's underlying member method code with example usage: obj.test_broken_pipe_error() without return types