def test_equals_2(self):
     self.assertEqual(longest(
         'loopingisfunbutdangerous', 'lessdangerousthancoding'),
         'abcdefghilnoprstu')
 def test_equals(self):
     self.assertEqual(longest('aretheyhere', 'yestheyarehere'), 'aehrsty')
 def test_equals_3(self):
     self.assertEqual(longest('inmanylanguages', 'theresapairoffunctions'),
                      'acefghilmnoprstuy')
 def test_equals_2(self):
     self.assertEqual(
         longest('loopingisfunbutdangerous', 'lessdangerousthancoding'),
         'abcdefghilnoprstu')
 def test_equals(self):
     self.assertEqual(longest('aretheyhere', 'yestheyarehere'), 'aehrsty')
 def test_equals_3(self):
     self.assertEqual(longest('inmanylanguages', 'theresapairoffunctions'),
                      'acefghilmnoprstuy')