Fixed #5475 -- Added the Luhn check algorithm to django.utils.checksums so that

localflavors don't have to reimplement it each time. Thanks, __hawkeye__.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@6569 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 27 insertions, 1 deletions

diff --git a/tests/regressiontests/utils/tests.py b/tests/regressiontests/utils/tests.py
index fe0b226adc..eb3a722888 100644
--- a/tests/regressiontests/utils/tests.py
+++ b/tests/regressiontests/utils/tests.py
@@ -4,7 +4,7 @@ Tests for django.utils.
 
 from unittest import TestCase
 
-from django.utils import html
+from django.utils import html, checksums
 
 from timesince import timesince_tests
 
@@ -116,6 +116,32 @@ class TestUtilsHtml(TestCase):
         for value, output in items:
             self.check_output(f, value, output)
 
+class TestUtilsChecksums(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)
+
+    def test_luhn(self):
+        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)
+
 __test__ = {
     'timesince_tests': timesince_tests,
 }