Agile Methods: Web Articles

• Introduction to Test Driven Design (TDD)
  
  An essay that explains what Test Driven Development is, how it works, and various myths and misunderstandings about TDD.
• Mocks Aren't Stubs
  Martin Fowler
  Essay on the differences between Mocks and Stubs.
• Ruby on Rails: RSpec Tutorial
  
  A series of articles introducing Behavior Driven Development and RSpec. Provides an overview, basic examples, discussion about Mock Objects, and advanced tips.
• Mocking and stubbing in Ruby on Rails
  Bruce Tate
  Understand the basic foundations behind stubbing and mocking techniques and strategies with this hands-on walkthrough using the three most popular mocking frameworks for Ruby.