old_contents: from twisted.trial.unittest import TestCase
  from carnifex.localprocess import LocalProcessInductor
  from twisted.internet import reactor
  
  
  class InductorTest(TestCase):
      def test_real_run(self):
          executable = 'echo'
          echo_text = "hello world!"
          expected_stdout = echo_text + '\n'
  
          inductor = LocalProcessInductor(reactor)
          result = inductor.run(executable, args=(executable, echo_text))
          @result.addCallback
          def check_result(result):
              expected_result = (expected_stdout, '', 0)
              self.assertEqual(result, expected_result)
          return result
  
new_contents: from twisted.trial.unittest import TestCase
  from carnifex.localprocess import LocalProcessInductor
  from twisted.internet import reactor
  
  
  class InductorTest(TestCase):
      def test_real_run(self):
          executable = 'echo'
          echo_text = "hello world!"
          expected_stdout = echo_text + '\n'
  
          inductor = LocalProcessInductor(reactor)
          result = inductor.run(executable, args=(executable, echo_text))
          @result.addCallback
          def check_result(result):
              expected_result = (expected_stdout, '', 0)
              self.assertEqual(result, expected_result)
          return result
  
      def test_real_run_unknown_command(self):
          executable = 'thiscommandshouldnotexist'
  
          inductor = LocalProcessInductor(reactor)
          result = inductor.run(executable)
          @result.addCallback
          def check_result(result):
              stdout, stderr, code = result
              self.assertEqual(stdout, '')
              self.assertNotEqual(stderr, '')
              self.assertNotEqual(code, 0)
          return result
  
      def test_getExitStatus_false(self):
          inductor = LocalProcessInductor(reactor)
          result = inductor.getExitStatus('false')
          @result.addCallback
          def check_result(result):
              self.assertNotEqual(result, 0, "The 'false' command should "
                                  "exit with a nonzero code")
          return result
  
      def test_getExitStatus_true(self):
          inductor = LocalProcessInductor(reactor)
          result = inductor.getExitStatus('true')
          @result.addCallback
          def check_result(result):
              self.assertEqual(result, 0, "The 'true' command should "
                               "exit with code 0")
          return result
  
subject: Add more tests to the local process integration test