Fixed #12417 -- Added signing functionality, including signing cookies. Many thanks to Simon, Stephan, Paul and everyone else involved.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16253 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/utils/baseconv.py

@@ -0,0 +1,41 @@
+from unittest import TestCase
+from django.utils.baseconv import base2, base16, base36, base56, base62, base64, BaseConverter
+
+class TestBaseConv(TestCase):
+
+    def test_baseconv(self):
+        nums = [-10 ** 10, 10 ** 10] + range(-100, 100)
+        for converter in [base2, base16, base36, base56, base62, base64]:
+            for i in nums:
+                self.assertEqual(i, converter.decode(converter.encode(i)))
+
+    def test_base11(self):
+        base11 = BaseConverter('0123456789-', sign='$')
+        self.assertEqual(base11.encode(1234), '-22')
+        self.assertEqual(base11.decode('-22'), 1234)
+        self.assertEqual(base11.encode(-1234), '$-22')
+        self.assertEqual(base11.decode('$-22'), -1234)
+
+    def test_base20(self):
+        base20 = BaseConverter('0123456789abcdefghij')
+        self.assertEqual(base20.encode(1234), '31e')
+        self.assertEqual(base20.decode('31e'), 1234)
+        self.assertEqual(base20.encode(-1234), '-31e')
+        self.assertEqual(base20.decode('-31e'), -1234)
+
+    def test_base64(self):
+        self.assertEqual(base64.encode(1234), 'JI')
+        self.assertEqual(base64.decode('JI'), 1234)
+        self.assertEqual(base64.encode(-1234), '$JI')
+        self.assertEqual(base64.decode('$JI'), -1234)
+
+    def test_base7(self):
+        base7 = BaseConverter('cjdhel3', sign='g')
+        self.assertEqual(base7.encode(1234), 'hejd')
+        self.assertEqual(base7.decode('hejd'), 1234)
+        self.assertEqual(base7.encode(-1234), 'ghejd')
+        self.assertEqual(base7.decode('ghejd'), -1234)
+
+    def test_exception(self):
+        self.assertRaises(ValueError, BaseConverter, 'abc', sign='a')
+        self.assertTrue(isinstance(BaseConverter('abc', sign='d'), BaseConverter))