def test_multiple_words(self):
     self.assertEqual(
         separate_ruby(['图[tú]', '书[shū]', '馆[guǎn]']),
         [('图', 'tú'), ('书', 'shū'), ('馆', 'guǎn')],
     )
 def test_no_ruby(self):
     self.assertEqual(
         separate_ruby(['tú', 'shū', 'guǎn']),
         [('', 'tú'), ('', 'shū'), ('', 'guǎn')],
     )
 def test_one_word(self):
     self.assertEqual(separate_ruby(['图[tú]书[shū]馆[guǎn]']),
                      [('图书馆', 'túshūguǎn')])