old_contents: import os
  import signal
  
  import pytest
  import salt.utils.vt as vt
  
  
  @pytest.mark.skip_on_windows(reason="salt.utils.vt.Terminal doesn't have _spawn.")
  def test_isalive_no_child():
      term = vt.Terminal(
          "for i in {1..9}; do echo $i;sleep $i; done",
          shell=True,
          stream_stdout=False,
          stream_stderr=False,
      )
  
      # make sure we have a valid term before we kill the term
      # commenting out for now, terminal seems to be stopping before this point
      assert term.isalive() is True
      # use a large hammer to make sure pid is really dead which will cause it to
      # raise an exception that we want to test for.
      os.kill(term.pid, signal.SIGKILL)
      os.waitpid(term.pid, 0)
      assert term.isalive() is False
  
new_contents: import os
  import signal
  
  import pytest
  import salt.utils.vt as vt
  
  
  @pytest.mark.skip_on_windows(reason="salt.utils.vt.Terminal doesn't have _spawn.")
  def test_isalive_no_child():
      term = vt.Terminal(
          "for i in {1..9}; do echo $i;sleep $i; done",
          shell=True,
          stream_stdout=False,
          stream_stderr=False,
      )
  
      # make sure we have a valid term before we kill the term
      # commenting out for now, terminal seems to be stopping before this point
      assert term.isalive() is True
      assert term.exitstatus is None
      # use a large hammer to make sure pid is really dead which will cause it to
      # raise an exception that we want to test for.
      os.kill(term.pid, signal.SIGKILL)
      os.waitpid(term.pid, 0)
      assert term.isalive() is False
      assert term.exitstatus == 0
  
subject: add asserts for the exitstatus before and after killed test