Rails Guides
http://guides.rubyonrails.org/testing_rails_applications.html
nullislove.com
http://www.nullislove.com/2007/11/14/testing-in-rails-part-1-unit-testing-in-ruby
http://www.nullislove.com/2007/11/17/testing-in-rails-part-2-unit-testing-ruby-classes/
http://www.nullislove.com/2007/11/20/testing-in-rails-part-3-unit-testing-ruby-classes-cont/
http://www.nullislove.com/2007/11/29/testing-in-rails-part-4-unit-testing-in-rails/
http://www.nullislove.com/2007/12/07/testing-in-rails-part-5-unit-testing-activerecord-models/
http://www.nullislove.com/2007/12/21/testing-in-rails-part-6-fixtures/
http://www.nullislove.com/2008/01/08/testing-in-rails-part-7-activerecord-relationships/
http://www.nullislove.com/2008/01/23/testing-in-rails-part-8-validations/
railstips.org
http://railstips.org/2008/12/12/when-you-dont-know-test
http://railstips.org/2009/1/6/test-or-die
http://railstips.org/2009/1/7/my-testing-theory
http://railstips.org/2009/1/8/test-or-die-validates-uniqueness-of
andrzejonsoftware.blogspot.com
http://andrzejonsoftware.blogspot.com/2007/05/15-tdd-steps-to-create-rails.html
http://andrzejonsoftware.blogspot.com/2007/05/and-some-more-tdd-steps-with-rails.html
http://andrzejonsoftware.blogspot.com/2008/01/what-do-i-gain-from-tdd-or-bdd.html
Behavior Driven Development (BDD)
http://behaviour-driven.org
http://www.jamievandyke.com/blog/2009/01/09/building-a-gem-using-bdd.html
http://www.oreillynet.com/pub/a/ruby/2007/08/09/behavior-driven-development-using-ruby-part-1.html
http://www.oreillynet.com/pub/a/ruby/2007/08/30/behavior-driven-development-using-ruby-part-2.html
Misc
http://giantrobots.thoughtbot.com/2008/11/7/a-critical-look-at-the-current-state-of-ruby-testing
http://www.cis.upenn.edu/~matuszek/cit597-2008/Lectures/40-unit-testing-in-rails.ppt
http://www.tutorialspoint.com/ruby-on-rails-2.1/rails-unit-testing.htm
http://technicalpickles.com/posts/test-or-die-validates-uniqueness-of-shoulda-and-factory-girl-edition
Blogs
http://blog.jayfields.com/
Books
http://www.amazon.com/Test-Driven-Development-Addison-Wesley-Signature/dp/0321146530/
http://www.railsprescriptions.com
Videos
http://peepcode.com/products/test-first-development
Tools
http://rspec.info
http://technicalpickles.com/posts/adding-cucumber-to-a-ruby-project
http://www.ultrasaurus.com/sarahblog/2008/12/rails-2-day-3-behavior-driven-development/ (BDD & Cucumber)
