      test = UnitTest()
      test.testReverseWords(reverse_words)
  
  if __name__=="__main__":
    main() 
</s> remove     test = UnitTest()
 </s> add     test = TestReverseWords() </s> remove     main() </s> add  </s> remove     main() </s> add  </s> remove             assert_equal(func('the sun is hot'), 'eht nus si toh')
            assert_equal(func(''), None)
            assert_equal(func('123 456 789'), '321 654 987')
            assert_equal(func('magic'), 'cigam')
 </s> add             self.assertEqual(func('the sun is hot'), 'eht nus si toh')
            self.assertEqual(func(''), None)
            self.assertEqual(func('123 456 789'), '321 654 987')
            self.assertEqual(func('magic'), 'cigam')
      test = UnitTest()
      test.testReverseWords(reverse_words)
  
  if __name__=="__main__":

keep keep keep keep replace
 #273: Remove nose dependency for staging/ (#283) 
staging/arrays_strings/reverse_words/reverse_words_solution.py