Along with practices like object-oriented programming and version control, automated testing is one of the greatest innovations ever to be introduced to programming.

Professional Rails Testing shows how to use automated testing-especially test-driven development-to see programming from a whole new angle. You'll see not just what to do but exactly why to do it-and when to question conventional testing wisdom. When you fully embrace automated testing and make it a habit, you'll wonder how you ever coded any other way.

Topics covered include:

• Tests as specifications
• Test-driven development
• How to write meaningful tests
• How to write understandable tests
• Mocks and stubs
• Flaky tests and how to fix them
• Factory Bot, RSpec and Capybara