def test_check_digit_is_correct(self):
isbn = ISBN13(ean='978', group='1', registrant='4516', publication='7331')
assert isbn.check_digit == '9'
isbn = ISBN13(ean='978', group='1', registrant='59327', publication='599')
assert isbn.check_digit == '0'
isbn = ISBN13(ean='978', group='1', registrant='4919', publication='2757')
assert isbn.check_digit == '1'
def test_check_digit_is_correct(self):
isbn = ISBN13(ean="978",
group="1",
registrant="4516",
publication="7331")
assert isbn.check_digit == "9"
isbn = ISBN13(ean="978",
group="1",
registrant="59327",
publication="599")
assert isbn.check_digit == "0"
isbn = ISBN13(ean="978",
group="1",
registrant="4919",
publication="2757")
assert isbn.check_digit == "1"
def test_format_length(self):
isbn = ISBN13(ean='978', group='1', registrant='4516', publication='7331')
assert len(isbn.format()) == 13
def test_format_length(self):
isbn = ISBN13(ean="978",
group="1",
registrant="4516",
publication="7331")
assert len(isbn.format()) == 13