Behaviour-Driven Development BDD gives you the best of Test Driven Development, Domain Driven Design, and Acceptance Test Driven Planning techniques, so you can create better software with self-documenting, executable tests that bring users and developers together with a common language.br br Get the most out of BDD in Ruby with iThe RSpec Booki, written by the lead developer of RSpec, David Chelimsky.br br You'll get started right away with RSpec 2 and Cucumber by developing a simple game, using Cucumber to express high-level requirements in language your customer understands, and RSpec to express more granular requirements that focus on the behavior of individual objects in the system. You'll learn how to use test doubles mocks and stubs to control the environment and focus the RSpec examples on one object at a time, and how to customize RSpec to speak in the language of your domain.br br You'll develop Rails 3 applications and use companion tools such as Webrat and Selenium to