def test_supplement_type_of_suppl_volume(self): self.assertEqual(utils.supplement_type('31', None, '2'), ('2', None))
def test_supplement_type_of_suppl_number(self): self.assertEqual(utils.supplement_type('31', '1', '2'), (None, '2'))
def test_supplement_type_of_suppl_volume(self): self.assertEqual(utils.supplement_type("31", None, "2"), ("2", None))
def test_supplement_type_of_no_supplements(self): self.assertEqual(utils.supplement_type('31', '1', None), (None, None))
def test_supplement_type_of_suppl_number(self): self.assertEqual(utils.supplement_type("31", "1", "2"), (None, "2"))