  import unittest
  
  from django.db import models
  from django.utils.formats import localize
  from django.test import TestCase
  
 
</s> remove         self.assertEqual(display_value, EMPTY_CHANGELIST_VALUE)
 </s> add         expected = u'<img src="%simg/admin/icon-unknown.gif" alt="None" />' % settings.ADMIN_MEDIA_PREFIX
        self.assertEqual(display_value, expected)
from django.conf import settings
  import unittest
  
from django.conf import settings
  from django.db import models
  from django.utils.formats import localize
  from django.test import TestCase
  
keep add keep keep keep keep
 Ensure that NullBooleanField displays the appropriate icon for null values in admin changelists. Refs #13071.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12746 bcc190cf-cafb-0310-a4f2-bffc1f526a37 
tests/regressiontests/admin_util/tests.py