Fixed #12991 -- Added unittest2 support. Thanks to PaulM for the draft patch, and to Luke, Karen, Justin, Alex, Łukasz Rekucki, and Chuck Harmston for their help testing and reviewing the final patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14139 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/validators/tests.py

@@ -1,10 +1,12 @@
 # -*- coding: utf-8 -*-
 import re
 import types
-from unittest import TestCase
 from datetime import datetime, timedelta
+
 from django.core.exceptions import ValidationError
 from django.core.validators import *
+from django.utils.unittest import TestCase
+
 
 NOW = datetime.now()