def validate_credit_card(ch, method, properties, data):
parsed_msg = json.loads(data)
card_num = parsed_msg["creditCard"]
if CreditCardChecker(card_num).valid():
print_validation_message(True)
else:
print_validation_message(False)
def validate_card_number(value):
"""
Validate the card number using luhn algorithm
:param value: str|int
:return:
"""
if CreditCardChecker(value).valid():
return value
raise ValueError(
'Invalid card number {card_number}'.format(card_number=value))
def card_data_is_valid(card):
print(card)
card_number = card.get("CreditCardNumber")
if (card_number is None) or (not CreditCardChecker(
str(card_number)).valid()):
print("Invalid card number")
return False
card_holder = card.get("CardHolder")
if card_holder is None:
print("Invalid card holder")
return False
expiration_date = card.get("ExpirationDate")
if expiration_date is None:
print("Invalid expiration date")
return False
else:
try:
if datetime.strptime(expiration_date, "%m-%Y") < datetime.now():
print("Expiration date is in the past")
return False
except ValueError:
print("Wrong expiration date format")
return False
security_code = card.get("SecurityCode")
if (not security_code is None) and len(security_code) != 3:
print("Invalid security code")
return False
amount = card.get("Amount")
if amount is None:
print("Invalid amount")
return False
else:
try:
if float(amount) < 0:
print("Amount is negative")
return False
except ValueError:
print("Amount could not be converted to a number")
return False
print("Valid credit card info")
return True
def test_is_valid_can_be_called_repeatedly(self):
number = CreditCardChecker("055 444 285")
self.assertIs(number.valid(), True)
self.assertIs(number.valid(), True)
def test_input_digit_9_is_correctly_converted_to_output_digit_9(self):
self.assertIs(CreditCardChecker("091").valid(), True)
def test_using_ascii_value_for_doubled_non_digit_isn_t_allowed(self):
self.assertIs(CreditCardChecker(":9").valid(), False)
def test_more_than_a_single_zero_is_valid(self):
self.assertIs(CreditCardChecker("0000 0").valid(), True)
def test_single_digit_strings_can_not_be_valid(self):
self.assertIs(CreditCardChecker("1").valid(), False)
def test_a_simple_valid_sin_that_becomes_invalid_if_reversed(self):
self.assertIs(CreditCardChecker("59").valid(), True)
def test_valid_strings_with_symbols_included_become_invalid(self):
self.assertIs(CreditCardChecker("055# 444$ 285").valid(), False)
def valid_card(cardString):
return CreditCardChecker(cardString).valid()
def test_valid_strings_with_a_non_digit_added_at_the_end_become_invalid(
self):
self.assertIs(CreditCardChecker("059a").valid(), False)
def test_invalid_long_number_with_an_even_remainder(self):
self.assertIs(
CreditCardChecker("1 2345 6789 1234 5678 9012").valid(), False)
def test_valid_number_with_an_even_number_of_digits(self):
self.assertIs(CreditCardChecker("095 245 88").valid(), True)
def test_invalid_credit_card(self):
self.assertIs(CreditCardChecker("8273 1232 7352 0569").valid(), False)
def test_invalid_canadian_sin(self):
self.assertIs(CreditCardChecker("055 444 286").valid(), False)
def test_a_valid_canadian_sin(self):
self.assertIs(CreditCardChecker("055 444 285").valid(), True)
def test_a_single_zero_is_invalid(self):
self.assertIs(CreditCardChecker("0").valid(), False)
def test_valid_strings_with_punctuation_included_become_invalid(self):
self.assertIs(CreditCardChecker("055-444-285").valid(), False)
def test_valid_number_with_an_odd_number_of_spaces(self):
self.assertIs(CreditCardChecker("234 567 891 234").valid(), True)
def test_a_simple_valid_sin_that_remains_valid_if_reversed(self):
self.assertIs(CreditCardChecker("059").valid(), True)
