Here’s an interesting clip on optimizing the way you write Unit tests. In his Blog entry, Dave Bower presents a pattern for using meaningful terminologies rather than literals in your tests.
http://manbuildswebsite.com/2010/12/20/domain-test-values/
While literals are typically a code smell in stadard coding, I personally have seen quite a few in unit tests. Applying the solid coding practices Brower presents will make your tests easier to read and maintain.
Christopher Grant 