if not s.isdigit() or len(s) != 16:
raise ValidationFailed("invalid card number")
def luhn_algorithm(number):
"""An example domain-specific checker, the Luhn check digit algorithm."""
if not number.isdigit():
raise ValidationFailed("expected a purely numeric string")
digits = list(map(int, number))
v = sum(digits[-1::-2]) + sum(sum(map(int, str(2 * x))) for x in digits[-2::-2])
if v % 10:
raise ValidationFailed("invalid check digit")
Request = Object(
username=String().constrain(length_between(2, 32)),
password=String().secret().constrain(length_between(6, 256)),
name=Object(
given_name=String().constrain(length_between(1, 64), matches_regex(r"^[A-Z][a-z]*")),
family_name=String().constrain(length_between(1, 64)),
middle_name=String().optional().constrain(length_between(1, 64)),
).optional(),
titles=Array(String()).optional(),
position=FixArray(Float(), Float()).optional(),
birthdate=Date().optional(),
gender=StringEnum("male", "female", "other").optional(),
timestamp=Datetime().optional(),
payment_info=Object(card_number=CardNumber().constrain(luhn_algorithm)).secret().optional(),
extra=Any().optional(),
)
def test_secrecy_declared_after():
t = String().constrain(length_between(4,6)).secret()
with pytest.raises(ValidationFailed) as excinfo:
t.check("xxx")
message = str(excinfo)
assert "xxx" not in message