Fixed #17693. Input validation and tests for base36 conversion utils. Thanks Keryn Knight for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17525 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/utils/http.py

@@ -1,3 +1,5 @@
+import sys
+
 from django.utils import http
 from django.utils import unittest
 from django.utils.datastructures import MultiValueDict
@@ -98,3 +100,25 @@ class TestUtilsHttp(unittest.TestCase):
         utils.fix_IE_for_vary(ie_request, response)
         self.assertFalse('Vary' in response)
 
+    def test_base36(self):
+        # reciprocity works
+        for n in [0, 1, 1000, 1000000, sys.maxint]:
+            self.assertEqual(n, http.base36_to_int(http.int_to_base36(n)))
+
+        # bad input
+        for n in [-1, sys.maxint+1, '1', 'foo', {1:2}, (1,2,3)]:
+            self.assertRaises(ValueError, http.int_to_base36, n)
+        
+        for n in ['#', ' ']:
+            self.assertRaises(ValueError, http.base36_to_int, n)
+
+        for n in [123, {1:2}, (1,2,3)]:
+            self.assertRaises(TypeError, http.base36_to_int, n)
+
+        # non-integer input
+        self.assertRaises(TypeError, http.int_to_base36, 3.141)
+        
+        # more explicit output testing
+        for n, b36 in [(0,'0'), (1,'1'), (42,'16'), (818469960,'django')]:
+            self.assertEqual(http.int_to_base36(n), b36)
+            self.assertEqual(http.base36_to_int(b36), n)