def test_even(self) -> None:
"""Calculate even parity check digit."""
assert parity.calculate("0110") == "0"
assert parity.calculate("0") == "0"
assert parity.calculate("01101") == "1"
def test_odd(self) -> None:
"""Calculate odd parity check digit."""
assert parity.calculate("0110", False) == "1"
assert parity.calculate("0", False) == "1"
assert parity.calculate("01101", False) == "0"
# checkdigit is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with checkdigit. If not, see <http://www.gnu.org/licenses/>.
from error404 import test
import checkdigit.isbn as isbn
import checkdigit.luhn as luhn
import checkdigit.parity as parity
import checkdigit.upc as upc
# Even parity
test(parity.calculate("0110"), "01100")
test(parity.calculate("0"), "00")
test(parity.calculate("01101"), "011011")
# Odd parity
test(parity.calculate("0110", False), "01101")
test(parity.calculate("0", False), "01")
test(parity.calculate("01101", False), "011010")
# ISBN-10 Check digit
test(isbn.calculate10("006196436"), "0")
test(isbn.calculate10("190592105"), "5")
test(isbn.calculate10("043942089"), "X")
# Validate ISBN-10
test(isbn.validate10("0205080057"))