14 March 2026

Our first AI-augmented TDD video

 AI/LLM/agentic coding guru Scott Werner reveals some intriguing "#prompt patterns" (my term...? Did I just invent a term???) when using #Claude Code (CC) to do Test-Driven Development (#TDD)

Notes & caveats:

(a) We're planning a "sequel" where we look deeper into the results of this session, because I'm not entirely confident that CC got everything right. And, it will give us the opportunity to showcase *how* one can investigate the results of a bigger bite (bigger than what us test-driven nerds are used to, anyway). We also hope to ask CC to make more architecturally-significant changes, e.g., persistence.

(b) The video style is--how shall I put this?--"rough & ready with a touch of retro."  My fault. I really do need to hire a video editor/producer. I recommend you watch at 1.25 speed, listen closely to everything Scott says, and ignore my awkward interruptions. 🤣

(c) Scott's interactions with CC seemed very natural, well-considered, and emergent. In one sense, it did feel like a mini-waterfall, because we asked CC to read the "PRD" and to build out a set of user stories all at once. OTOH, since progress was so rapid and feedback so easy to obtain, it also felt a lot like continuous flow, or what us old-timers thought of as #Agile (😱 "language...!") 

#AI #LLM #Agentic

Okay, enough of that. On with the show...!

https://youtu.be/Oz3KS9-Yohg

04 March 2026

Lowest-price copies of the book!

If you've been waiting for my new book to go on sale, YOU'RE IN LUCK!

Discount code ESSENTIALTDD confers a 35% discount off the list price of ISBNs 9780134494159 (print) or 9780134494364 (eBook) only when purchased on InformIT.com.

Standard disclaimers:

  • Offer does not apply to book + eBook “Best Value” or “Additional Savings” bundle.
  • Offer expires 11:59pm EST December 31, 2026.
  • Discount may not be combined with any other offer and is not redeemable for cash.
  • Offer subject to change.

https://www.informit.com/store/essential-test-driven-development-9780134494159

27 January 2026

IT'S OFFICIAL! The book is published!

 I got this note from my book's Executive Editor / Product Manager today!

-- -- -- 

Rob,

Your book published!!!!!

Congratulations! The print edition of Essential Test-Driven Development released yesterday! Thank you so much for the hard work you put into this project. I hope you are as excited as I am to see this out in the world.

The print edition is available for purchase from InformIT [URL below]. The eBook should be available soon... 

The print edition will be available from other retailers (Amazon, etc.) in a couple of weeks after stock reaches their warehouse.

I am checking with Manufacturing to see if your book printed locally in the UK, in which case it should be available soon. If we printed in the US and are shipping to the UK/Europe, then it will be 6-8 weeks before it is available outside the US.

-- -- -- 

https://www.informit.com/store/essential-test-driven-development-9780134494159