I’m happy to tell you that Everyday Rails Testing with RSpec has been translated to Japanese and is now available on Leanpub. The team of translators has worked hard over the past several weeks to not only deliver this edition for Japanese-reading audiences, but also help me make the English version better by making several suggestions. For their efforts, they will receive 100% of the book royalties for the Japanese version.
Everyday Rails Testing with RSpec is my practical guide to learning to test your Rails application using RSpec, Capybara, and Factory Girl. It’s also available in Chinese and English.
Join me on a thought experiment: How does my time-tested approach to testing Ruby on Rails applications apply to the tools we get from the framework? Whether you're new to Rails testing, or curious about the default testing stack, Testing Rails from Scratch gives you a pragmatic, end-to-end introduction to test-driven development. Covers Rails 8.1 and Ruby 4.0. Early release now available for sale on Leanpub!
If you liked my series on practical advice for adding reliable tests to your Rails apps, check out the expanded ebook version. Lots of additional, exclusive content and a complete sample Rails application. Updated in 2026 to Rails 8.1 and Ruby 4.0!
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