def test_single_reference(self):
        # multi-chapter book
        self.assertEqual(f('John 1:1'), 'John 1:1')
        self.assertEqual(f('John 2:3'), 'John 2:3')

        # single-chapter book
        self.assertEqual(f('Jude 3'), 'Jude 3')
        self.assertEqual(f('Jude 1:3'), 'Jude 3')
for multi-chapter books, output should be
dataset/ETHPy150Open davisd/python-scriptures/scriptures/tests/test_reference_to_string.py/TestReferenceToSting.test_single_reference