Testing a New Page Loaded (or not) with Capybara
How to Get Production-like Error Responses in Your Rails Tests
How to Cleanly Test Rails Rake Tasks with RSpec
Faster RSpec: Profiling FactoryGirl
RSpec Refactoring Patterns: Extract Matcher
Configure your project with a spec file name enforcer.
See what view specs look like from real Rails apps. Probably the largest collection of view specs in the world.