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Code Issues 32 Releases Wiki Activity

Refs #23613 -- Removed django.utils.checksums per deprecation timeline.

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This commit is contained in:
Tim Graham
2015-09-01 11:06:41 -04:00
parent 96317ad8de
commit e5c12f6701
2 changed files with 0 additions and 67 deletions
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34
django/utils/checksums.py
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@@ -1,34 +0,0 @@
"""
Common checksum routines.
"""
__all__ = ['luhn']
import warnings
from django.utils import six
from django.utils.deprecation import RemovedInDjango110Warning
warnings.warn(
"django.utils.checksums will be removed in Django 1.10. The "
"luhn() function is now included in django-localflavor 1.1+.",
RemovedInDjango110Warning
)
LUHN_ODD_LOOKUP = (0, 2, 4, 6, 8, 1, 3, 5, 7, 9) # sum_of_digits(index * 2)
def luhn(candidate):
"""
Checks a candidate number for validity according to the Luhn
algorithm (used in validation of, for example, credit cards).
Both numeric and string candidates are accepted.
"""
if not isinstance(candidate, six.string_types):
candidate = str(candidate)
try:
evens = sum(int(c) for c in candidate[-1::-2])
odds = sum(LUHN_ODD_LOOKUP[int(c)] for c in candidate[-2::-2])
return ((evens + odds) % 10 == 0)
except ValueError: # Raised if an int conversion fails
return False

33
tests/utils_tests/test_checksums.py
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@@ -1,33 +0,0 @@
import unittest
from django.test import ignore_warnings
from django.utils.deprecation import RemovedInDjango110Warning
class TestUtilsChecksums(unittest.TestCase):
def check_output(self, function, value, output=None):
"""
Check that function(value) equals output. If output is None,
check that function(value) equals value.
"""
if output is None:
output = value
self.assertEqual(function(value), output)
@ignore_warnings(category=RemovedInDjango110Warning)
def test_luhn(self):
from django.utils import checksums
f = checksums.luhn
items = (
(4111111111111111, True), ('4111111111111111', True),
(4222222222222, True), (378734493671000, True),
(5424000000000015, True), (5555555555554444, True),
(1008, True), ('0000001008', True), ('000000001008', True),
(4012888888881881, True), (1234567890123456789012345678909, True),
(4111111111211111, False), (42222222222224, False),
(100, False), ('100', False), ('0000100', False),
('abc', False), (None, False), (object(), False),
)
for value, output in items:
self.check_output(f, value, output)