Submitted by Tomek Kaczanowski on Wed, 12/15/2010 - 11:54
Unit tests are small, and have no side effects or hidden dependencies. That means no talking to the database, and no calls to web services, and no calling the file system. Keep It Simple and keep it fast.
This used to be my blog. I moved to http://tomek.kaczanowscy.pl long time ago.