tests/test_verhoeff.doctest


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61

test_verhoeff.doctest - more detailed doctests for stdnum.verhoeff module

Copyright (C) 2010 Arthur de Jong

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA


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

>>> from stdnum import verhoeff


These are normal variations that should just work. Calculating checksums:

>>> verhoeff.checksum('654')
1
>>> verhoeff.checksum('1428570')
0
>>> verhoeff.checksum('398438246238642378648236487236482734')
3


The same numbers but now simply ask for validation:

>>> verhoeff.is_valid('654')
False
>>> verhoeff.is_valid('1428570')
True
>>> verhoeff.is_valid('398438246238642378648236487236482734')
False


Adding a check digit to the numbers so they are all valid:

>>> verhoeff.calc_check_digit('654')
'8'
>>> verhoeff.is_valid('6548')
True
>>> verhoeff.calc_check_digit('1428570')
'8'
>>> verhoeff.is_valid('1428570')
True
>>> verhoeff.calc_check_digit('398438246238642378648236487236482734')
'7'
>>> verhoeff.is_valid('3984382462386423786482364872364827347')
True