Cucumber
Description
Cucumber executes plain text documentation of code against that code.
Blog Post
Story Driven Development With Rails Part I: Up And Running (paulbarry.com)
Getting Started With Story Driven Development For Rails With Cucumber (barkingiguana.com)
Authentication In Cucumber Tests (afreshcup.com)
Cucumber: Next Generation Ruby Bdd Tool (gojko.net)
Integration Testing With Cucumber, R Spec And Thinking Sphinx (rhnh.net)
Cucumbers And Factory Girls (faces.rubyonrails.com.au)
Cool As A Cucumber (advent2008.hackruby.com)
Screencast
None, why not add something?
Book
Cucumbers Presentation (slideshare.net)
Behavior Driven Development With Cucumber Presentation (slideshare.net)
