old_contents: import unittest
  from source.announcer_2_chair import *
  
  class AnnouncerTestCase(unittest.TestCase):
  
      def setUp(self):
          pass
  
      def test_announcer_is_a_class(self):
          pass
  
      def test_announcer_has_a_show_method(self):
          pass
  
      def test_announcer_has_an_ask_human_method(self):
          pass
  
new_contents: import unittest
  from source.announcer_2_chair import *
  
  class AnnouncerTestCase(unittest.TestCase):
  
      def setUp(self):
          self.announcer = Announcer()
          self.methodList = [method for method in dir(self.announcer) if callable(getattr(self.announcer, method))]
  
      def test_announcer_is_a_class(self):
          self.assertIsInstance(self.announcer, Announcer)
  
      def test_announcer_has_a_show_method(self):
          pass
  
      def test_announcer_has_an_ask_human_method(self):
          pass
  
subject: write first test case