Added a test from Jamie Gennis to ensure #9848 doesn't reappear.
Added a test from Jamie Gennis to ensure #9848 doesn't reappear.

The bug itself was fixed at some point in the past months (there have
been a few improvements to update() recently). Fixed #9848.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@10528 bcc190cf-cafb-0310-a4f2-bffc1f526a37

sam-tsai/django-old,sam-tsai/django-old,t11e/django,skevy/django,Instagram/django,alex/django-old,mitsuhiko/django,alex/django-old,Smarsh/django,Instagram/django,bfirsh/django-old,mitsuhiko/django,alex/django-old,disqus/django-old,disqus/django-old,jamespacileo/django-france,disqus/django-old,django-nonrel/django-nonrel,Smarsh/django,mitsuhiko/django,t11e/django,skevy/django,Instagram/django,bfirsh/django-old,Smarsh/django,jamespacileo/django-france,sam-tsai/django-old,t11e/django,django-nonrel/django-nonrel,skevy/django,bfirsh/django-old,Smarsh/django,sam-tsai/django-old,django-nonrel/django-nonrel,jamespacileo/django-france