Jay Fields also has an excellent collection of blog posts on Ruby particularly useful stuff when you are looking into doing better Ruby testing.

Some I have found interesting http://blog.jayfields.com/2007/09/rails-how-we-test.html http://blog.jayfields.com/2007/11/ruby-testing-private-metho... http://blog.jayfields.com/2007/05/ruby-unit-testing-delegati... http://blog.jayfields.com/2008/01/testing-one-expectation-pe...