My books
Everyday Rails Testing with RSpec: A practical approach to test-driven development
Learn tried-and-true techniques for writing clear, effective, maintainable tests in RSpec—in turn, building more trustworthy features for your customers, and saving countless hours refreshing your browser.
Testing Rails from Scratch: A practical, (mostly) out-of-the-box approach to test-driven development in Ruby on Rails
A practical guide to testing Rails applications at every level, using (mostly) tools that the framework includes by default. You'll learn to test the way I did, by starting with simple building blocks and expanding into complex tests covering broad swaths of your code.