Summary

Kent Beck builds this book around two worked, hands-on examples: a multi-currency exercise developed entirely test-first through the Red-Green-Refactor cycle, and a small xUnit testing framework built from scratch so you see how the tools you rely on actually work underneath. A closing catalog then names the patterns scattered through both examples, covering the red-green-refactor rhythm itself, how to write the tests, and how design patterns emerge once a test forces a decision. Chapters stay short and deliberately narrow, favoring practice you can follow along with over abstract argument, which is why it reads better as a book to type through than one to read cover to cover. It treats tests not as a check added after the code but as the mechanism that drives each design decision at the moment it's made. The book is available in Japanese translation from Ohmsha.

Editor's Note

For those who want to learn TDD hands-on by working through examples. It favors practice over theory, making it a solid first step toward habituating quality; its examples are small, so supplement with other books for production-scale use.

Target Readers

• Developers who have read about TDD but have never actually worked through the Red-Green-Refactor cycle line by line
• Intermediate engineers who want tests to drive design decisions rather than just verify code after it's written
• Programmers curious how a testing framework works internally, who want to build a small one from scratch as a learning exercise

Colophon

Publisher

Ohmsha

ISBN

978-4274217883

Published

Oct 2017

List price

¥3,080incl. taxMay differ from the actual selling price on Amazon