In fact, I got so into the flow writing the notes that I missed my normal dinner time!

You can catch up on the notes (#EventSourcing, #Java, #TDD) so far:

https://ted.dev/articles/2026/02/04/live-coding-journal-feb-4-2026/
https://ted.dev/articles/2026/02/05/live-coding-journal-feb-5-2026/

And catch me live (Mon-Thu, 8pm UTC) at https://jitterted.stream/

I’m happy to announce my workshop, ‘𝐖𝐞𝐥𝐥-𝐁𝐚𝐥𝐚𝐧𝐜𝐞𝐝 𝐓𝐞𝐬𝐭-𝐃𝐫𝐢𝐯𝐞𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭’ on 21 𝐚𝐧𝐝 22 𝐌𝐚𝐲 2025 at 𝐓𝐡𝐞 𝐁𝐫𝐚𝐢𝐧 𝐄𝐦𝐛𝐚𝐬𝐬𝐲 𝐢𝐧 𝐀𝐧𝐭𝐰𝐞𝐫𝐩. This two-day, hands-on workshop blends theory with practice in a real-world codebase. You'll be collaborating together with fellow attendees to master the art of writing loosely coupled and highly maintainable automated developer tests.

(1/2)

#tdd #unittests #softwaredesign #softwarecrafting

It's here! I hold in my hand @RobMyers's new book "Essential Test-Driven Development"!

A long time coming, but thrilled for Rob that it's finally out into the world!

#TDD

Alt...

Picture of Ted holding a paperback copy of Rob Myers' book titled "Essential Test-Driven Development".

RE: https://mastodon.social/@RobMyers/115980182722512158

My physical copy arrives tomorrow! At some point I hope to get your autograph on it. 😊

#TDD

RE: https://mastodon.social/@bosslogic/115984174298880765

“#TDD and #BDD aren’t really about testing at all. They’re about feedback loops and thinking clearly about intent before implementation.”

Intent first!

Что читать и смотреть в 2026. Эпичная подборка для разрабов, лидов, CTO и архитекторов

По просьбе подписчика моего ТГ-канала публикую список источников для самоподготовки. Легендарные вещи, полностью изменившие мои взгляды на индустрию.

https://habr.com/ru/articles/986832/

#источники #книги #доклады #видео #статьи #agile #xp #экстремальное_программирование #tdd #ddd

However, developers are often conditioned to believe that their work should always involve complexity.
“Easy things? Is that a joke? We’re software engineers! Complexity is our trade.”

This is one of the main reasons why many people are turned off by Test-Driven Development. But if you can move past this mindset, you’ll be in a much better place. I favour small, ridiculous steps over larger steps that feed into complexity any day.

#tdd #testdrivendevelopment #unittests #softwaredesign

Leanpub book LAUNCH 🚀 The Other Half of Coding: What they Didn't Teach You by Max Guernsey, III

Watch here: https://youtu.be/lDwuiSwaCf4

#books #leanpublishing #selfpublishing #booklaunch #management #coding #programming #OOP #TDD #softwareengineering #refactoring

Leanpub book LAUNCH 🚀 The Other Half of Coding: What they Didn't Teach You by Max Guernsey, III

Watch here: https://youtu.be/lDwuiSwaCf4

#books #leanpublishing #selfpublishing #booklaunch #management #coding #programming #OOP #TDD #softwareengineering #refactoring

Leanpub Book LAUNCH 🚀 The Other Half of Coding: What they Didn't Teach You by Max Guernsey, III

Read & watch on the Leanpub Blog here:

https://leanpub.com/blog/leanpub-book-launch-the-other-half-of-coding-what-they-didnt-teach-you-by-max-guernsey-iii

#books #leanpublishing #selfpublishing #booklaunch #management #coding #programming #OOP #TDD #softwareengineering #refactoring

Leanpub book LAUNCH 🚀 The Other Half of Coding: What they Didn't Teach You by Max Guernsey, III

Watch here: https://youtu.be/lDwuiSwaCf4

#books #leanpublishing #selfpublishing #booklaunch #management #coding #programming #OOP #TDD #softwareengineering #refactoring

When figuring out what was needed for "find all events after a given checkpoint", that was on the Discovery/Design side of #TDD. Once I had that defined (an interface and 2 implementations), then I could move completely into implementation, using the tests to take safe steps.

On my #Java live coding stream today, when implementing the JDBC implementation of my Event Store, I talked about doing #TDD for Discovery and Design (learning about what the desired behavior should be), vs. implementing a known behavioral specification.

https://jitterted.stream

Remember that the “Red” (failing test) part of #TDD is the perfect time to make sure the failure message is useful, instead of the less than helpful “expected actual to not be null”.

#UnitTesting

I now have a GUI for my #rust #GameOfLife
Will optimize the code a bit and try to test _some_ of the UI code with unit tests.

Then I might record a video, since I did not yet find one on youtube where someone implements it in Rust using #TDD (if you know such a video, please forward it to me).

Another implementation of game-of-life, this time in #Java and I tried to use some #functional constraints:

https://codeberg.org/dtanzer/game-of-life/src/branch/main/java-func-constraint

Didn't clean up the test file, that was not what I wanted to practice this time. Also, forgot to commit after each micro step during the #TDD cycle.

And it's probably my last game-of-life for some time, since this year's global-day-of-code-retreat is over. #gdcr

Made a first attempt of #tdd in #rust - Feel free to roast my code, happy to hear feedback! It's just the "prime factors" - kata, though: https://codeberg.org/dtanzer/rust-playground/src/branch/main/prime_factors

Also, should I use an assertion library? Found some, and "assert_eq!" seems not very powerful...

Fühlt sich Testing für euch auch oft wie eine Bremse an? 🐌 Die CI-Pipeline ist ewig rot, man schreibt Tests für Tests und am Ende liefert man trotzdem langsamer.

Das ist kein Sicherheitsnetz, das ist "Quality Theatre". Passiert, wenn Tests nur ein Ritual sind.

Automatisierte Tests sind nicht der Bremsklotz, sie sind euer Gaspedal. Wenn sie euch hindern, nutzt sie nicht.

Agilität braucht ein Sicherheitsnetz. Wie seht ihr das?

#Softwareentwicklung #testing #tdd #agile #mindset

I've been teaching Test-Driven Development (TDD) for 6 months now, to 10 teams.

The feedback I have from these teams, 3 months after the sessions, is that of course they don't always use TDD, they use it sometimes. But most say that they now look at writing software differently.

I think they have integrated this way of "design is also in the smaller things", checking that it works all the time, and more communication inside and outside the team.

I'm so happy about these feedbacks!

#code #tdd

Keep Your SwiftUI Tests Focused by Writing Them in English First https://qualitycoding.org/describe-test-plain-english/ #TDD

Alt...

iOS Test-Driven Development Describe Your Test in Plain English Quality Coding with Jon Reid Image of post-it note with test

#PairProgramming (if you'd like to) #TDD #JUnit5 #Kotlin #Java

- Also set status when not complete or green (tx Ron)
- Setup-free .gitignore (tx Llewellyn)
- Refactorings (tx Llewellyn, Petar)
- TrunkVer (tx Raimo & Chris)

#JUnit5 #TDD