Fixed a couple of tests migrated to unit tests in r14279 so they actually and...

Fixed a couple of tests migrated to unit tests in r14279 so they actually and correctly exercise the functionality under test.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14981 bcc190cf-cafb-0310-a4f2-bffc1f526a37