code: def test_terminate(self):
      args = PROGRAM_BLOCKED
      proc = self.loop.run_until_complete(
          asyncio.create_subprocess_exec(*args)
      )
      proc.terminate()
      returncode = self.loop.run_until_complete(proc.wait())
      if sys.platform == "win32":
          self.assertIsInstance(returncode, int)
          # expect 1 but sometimes get 0
      else:
          self.assertEqual(-signal.SIGTERM, returncode)
  
imports: import os
  import signal
  import sys
  import textwrap
  import unittest
  import warnings
  from unittest import mock
  import asyncio
  from asyncio import base_subprocess
  from asyncio import subprocess
  from test.test_asyncio import utils
  from test import support
  from test.support import os_helper
label_desc: Use image node_id 8 for calling the SubprocessMixin obj's underlying member method code with example usage: obj.test_terminate() without return types