def test_characters_transform(self):
     self.assertEqual(Encoder.duplicate_encode('din'), '(((')
 def test_characters_upper_and_lower(self):
     self.assertEqual(Encoder.duplicate_encode("Success"), ')())())')
 def test_characters_special_char(self):
     self.assertEqual(Encoder.duplicate_encode("Suc#cess"), ')()()())')
 def test_characters_duplicated(self):
     self.assertEqual(Encoder.duplicate_encode('rece'), '()()')