def test_equals(self):
     self.assertEqual(remove_rotten(
         ['rottenApple', 'rottenBanana', 'rottenApple', 'rottenPineapple',
          'rottenKiwi']), ['apple', 'banana', 'apple', 'pineapple', 'kiwi'])
 def test_equals_2(self):
     self.assertEqual(remove_rotten([]), [])