def createDonorIdentifier(donorRecord):
try:
date = datetime.datetime.strptime(donorRecord['dob'], '%d %b %Y')
firstInitial = donorRecord['first_name'][0].upper()
lastName = donorRecord['surname'].upper() if len(
donorRecord['surname']
) >= LAST_NAME_BOUND else donorRecord['surname'].ljust(
LAST_NAME_BOUND, SUBSTITUTION_CHARACTER).upper()
lastSSNDigits = donorRecord['ssn'][SSN_LAST:].replace('-', '')
donorIdentifier = f"{lastName[0:LAST_NAME_BOUND]}{firstInitial}{date.strftime('%Y%m%d')}{lastSSNDigits}"
#return the check digit from the string of digits
check_digit = mod_11_algorithm(donorIdentifier[-DIGITS:])
#the check digit is one character by design
return f'{donorIdentifier}{check_digit}'
except Exception as ex:
raise Exception(f'Exception occurred in createDonorIdentifier {ex}')
def test_mod11AlgorithEmptyValue():
with pytest.raises(IndexError) as error_info:
mod_11_algorithm('')
def test_mod11AlgorithNegativeValue():
with pytest.raises(ValueError) as error_info:
mod_11_algorithm('-199601210128')
def test_mod11AlgorithValueError():
with pytest.raises(ValueError) as error_info:
mod_11_algorithm('1996012A0128')
def test_mod11AlgorithReturnLength():
assert len(
mod_11_algorithm('199601210128')
) == EXPECTED_CHECK_DIGIT_LENGTH, f'Check Digits are Expected to be {EXPECTED_CHECK_DIGIT_LENGTH} Characters Long'
def test_mod11Algorithm():
for index, expectedValue in enumerate(EXPECTED_VALUES):
assert expectedValue[VALUE_WITH_CHECKSUM][
-EXPECTED_CHECK_DIGIT_LENGTH:] == mod_11_algorithm(
expectedValue[VALUE_INITIAL]
), f'Check Sum Doesn' 't Match Expected Value in Pair: {index}'