old_contents: import unittest
  
  from spiralgalaxygame.sentinel import Sentinel, Enum
  
  
  class SentinelTests (unittest.TestCase):
      def setUp(self):
          self.s = Sentinel('thingy')
  
      def test_name(self):
          self.assertIs(self.s.name, 'thingy')
  
      def test_repr(self):
          self.assertEqual(repr(self.s), '<Sentinel thingy>')
  
      def test_identity_by_name(self):
          s2 = Sentinel('th' + 'ingy') # `+` to avoid string interning.
          self.assertIs(s2, self.s)
  
  
  class EnumTests (unittest.TestCase):
      def setUp(self):
          self.e = Enum('red', 'green', 'blue')
  
      def test_iter_and_members_are_sentinels(self):
          for member in self.e:
              self.assertIsInstance(member, Sentinel)
  
      def test_member_as_attr_and_in_operator(self):
          self.assertIn(self.e.green, self.e)
  
new_contents: import unittest
  
  from spiralgalaxygame.sentinel import Sentinel, Enum
  
  
  class SentinelTests (unittest.TestCase):
      def setUp(self):
          self.s = Sentinel('thingy')
  
      def test_name(self):
          self.assertIs(self.s.name, 'thingy')
  
      def test_repr(self):
          self.assertEqual(repr(self.s), '<Sentinel thingy>')
  
      def test_identity_by_name(self):
          s2 = Sentinel('th' + 'ingy') # `+` to avoid string interning.
          self.assertIs(s2, self.s)
  
  
  class EnumTests (unittest.TestCase):
      def setUp(self):
          self.e = Enum('red', 'green', 'blue')
  
      def test_repr(self):
          self.assertEqual(repr(self.e), '<Enum blue, green, red>')
  
      def test_iter_and_members_are_sentinels(self):
          for member in self.e:
              self.assertIsInstance(member, Sentinel)
  
      def test_member_as_attr_and_in_operator(self):
          self.assertIn(self.e.green, self.e)
  
subject: Add a test for ``Enum.__repr__``; ``spiralgalaxygame.sentinel`` now has full coverage.