http://www.haskell.org/haskellwiki/Introduction_to_QuickCheck
http://www.haskell.org/haskellwiki/Blog_articles/Testing
http://leiffrenzel.de/papers/getting-started-with-hunit.html
http://www.rubyquiz.com/quiz27.html
http://www.betaversion.org/~stefano/linotype/news/110/
http://www.codinghorror.com/blog/archives/001003.html
http://crepuscular-homunculus.blogspot.com/2007/10/gedit-for-ruby-and-everything-else-on.html