Added unit test to confirm #558
Added unit test to confirm #558

git-svn-id: http://code.djangoproject.com/svn/django/trunk@696 bcc190cf-cafb-0310-a4f2-bffc1f526a37

--HG--
extra : convert_revision : ec775258dc0b8a0b3be628c537f86782ff5bfa7c

heracek/django-nonrel,heracek/django-nonrel,adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel,heracek/django-nonrel