def test_simple_case(self):
     '''
 test that a sentence with "the" gets it replaced with "HAHA"
 '''
     sentence = "the world is dark"
     expected = "HAHA world is dark"
     self.assertEqual(haha_replace_function(sentence), expected)
 def test_simple_case(self):
   '''
   test that a sentence with "the" gets it replaced with "HAHA"
   '''
   sentence = "the world is dark"
   expected = "HAHA world is dark"
   self.assertEqual(haha_replace_function(sentence), expected)
 def test_sentence_with_no_the(self):
     '''
 test that a sentence with no "the" gets nothing replaced
 '''
     sentence = "hello world"
     self.assertEqual(haha_replace_function(sentence), sentence)
 def test_sentence_with_no_the(self):
   '''
   test that a sentence with no "the" gets nothing replaced
   '''
   sentence = "hello world"
   self.assertEqual(haha_replace_function(sentence), sentence)