def METHOD_NAME(self):
    self.partner.vat = "CU12345678Z"
    country_code, identifier_type, vat_number = self.partner._parse_aeat_vat_info()
    self.assertEqual(country_code, "CU")
    self.assertEqual(identifier_type, "04")
    self.assertEqual(vat_number, "CU12345678Z")