test_ean.doctest - more detailed doctests for the stdnum.ean module

Copyright (C) 2013 Arthur de Jong

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

>>> from stdnum import ean


These numbers have broken checksums or are mangled:

>>> ean.validate('7501031311309')
'7501031311309'
>>> ean.validate('75010313113')
Traceback (most recent call last):
   ...
InvalidLength: ...
>>> ean.validate('750103AAAA309')
Traceback (most recent call last):
   ...
InvalidFormat: ...
>>> ean.validate('7501031311308')
Traceback (most recent call last):
   ...
InvalidChecksum: ...