test_ismn.doctest - more detailed doctests for stdnum.ismn module

Copyright (C) 2010-2017 Arthur de Jong

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This file contains more detailed doctests for the stdnum.ismn module. It
tries to test more corner cases and detailed functionality that is not
really useful as module documentation.

>>> from stdnum import ismn


These are normal variations that should just work.

>>> ismn.validate('979-0-3217-6543-6')
'9790321765436'
>>> ismn.validate('979-0-3217-6544-3')
'9790321765443'
>>> ismn.validate('9790321765450')
'9790321765450'
>>> ismn.validate('M-3217-6546-7')
'M321765467'
>>> ismn.validate('M321765474')
'M321765474'
>>> ismn.validate('979-0-260000438')
'9790260000438'


Tests for mangling and incorrect check digits.

>>> ismn.validate('979-0-3217-6543-x')
Traceback (most recent call last):
    ...
InvalidFormat: ...
>>> ismn.validate('M-3217-6546-8')
Traceback (most recent call last):
    ...
InvalidChecksum: ...
>>> ismn.validate('979M321765450')
Traceback (most recent call last):
    ...
InvalidComponent: ...
>>> ismn.validate('Z-3217-6546-8')
Traceback (most recent call last):
    ...
InvalidFormat: ...


See if 10 to 13 digit conversion works.

>>> ismn.to_ismn13('979-0-32176544-3')  # ismn13 should stay ismn13
'979-0-32176544-3'
>>> ismn.to_ismn13('M-32176546-7')
'979-0-32176546-7'
>>> ismn.to_ismn13('M 3217 65504')
'979 0 3217 65504'


Test the ismn_type() function

>>> ismn.ismn_type('M-3217-6546-7')
'ISMN10'
>>> ismn.ismn_type('BAD')
>>> ismn.ismn_type('9790321765450')
'ISMN13'


Regrouping tests.

>>> ismn.format('M-3217-6546-7')
'979-0-3217-6546-7'
>>> ismn.format('9790321765450')
'979-0-3217-6545-0'


While an EAN can also be less than 13 digits and ISMN should always be
13 digits (when not 10 digits) and start with 9790.

>>> ismn.validate('979023456784')
Traceback (most recent call last):
    ...
InvalidLength: ...
>>> ismn.validate('9781234567866')
Traceback (most recent call last):
    ...
InvalidComponent: ...