Sign in

NON-TOXICNo ads · No shady algorithms

iiinova is part of the Atmosphere — an open, public network where you own your identity.

Jan Van Ryswyck

@janvanryswyck.mastodon.social.ap.brid.gy
60 followers 1 following 324 posts

Owner @ Principal IT, husband, father of three, geek, XP / TDD disciple, author of Writing Maintainable Unit Test, enjoys running, fan boy of many things […] [bridged from mastodon.social/@janvanryswyck on the fediverse by fed.brid.gy ]

PostsRepliesMedia
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 17h
Current view #gouda
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 30/10/2026
“ 1999: All pairprogramming is pair programmed. 2026: All production code is pair programmed, with an agent. Human pairing is more important than ever " From “Keep pairing with humans”: impatientprogramming.org/essays/mar… #shared #pairprogramming
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 21/10/2026
After searching for this book for several years, I finally managed to buy a reasonably priced copy. I'm looking forward to reading it.
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 17/10/2026
The board of yesterday’s open-space at #brewtcon
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/10/2026
Coverage is not the only path to confidence #brewtcon
110 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/10/2026
Fear-based testing #brewtcon
001 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/10/2026
Critical thinking #brewtcon
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/10/2026
Leverage the socio in socio-technical systems @lisihocke #brewtcon
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/10/2026
At BREWT conference in Lier #brewtcon
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 15/10/2026
"Digital makes humans work faster than is good for our well being. Why? To get stuff done faster. Why? Because everyone wants stuff fast these days? Why? Because it's so important to be new and up to date? Why?" - Gerry McGovern #climatechange
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 14/10/2026
Blogged: How Long Does It Take to Learn TDD? Longer Than You Think, And That's Fine. principal-it.eu/2026/10/how-long-to… #tdd #testdrivendevelopment #unittests #unittesting #softwaredesign
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 04/10/2026
Donateursdag in de Zonnegloed #animals #sanctuary
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 01/10/2026
On Thursday 8 October, I'll be presenting my talk "𝐓𝐡𝐞 𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐜𝐞 𝐎𝐟 𝐄𝐱𝐭𝐫𝐞𝐦𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 𝐈𝐧 𝐓𝐡𝐞 𝐀𝐠𝐞 𝐎𝐟 𝐋𝐋𝐌𝐬" at the 1st edition of the Building Bruges conference. In this talk, I'll take a deep dive into the core practices of XP, and why these […] [Original post on mastodon.social]
011 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 18/09/2026
Today’s views #iceland
The divide between the American and Eurasian tectonic plates.Church building at the divide of tectonic plates Church in Reykjavik with the statue of Leif Ericsson
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 18/09/2026
Today's views #iceland
Bruarfoss waterfall in Iceland
https://bruarfoss.isGulfoss waterfall in Iceland
https://en.wikipedia.org/wiki/GullfossGulfoss waterfall in Iceland
https://en.wikipedia.org/wiki/GullfossGulfoss waterfall in Iceland
https://en.wikipedia.org/wiki/Gullfoss
001 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 17/09/2026
Humans surely are a strange bunch. #iceland
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/09/2026
Today’s views #iceland
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 15/09/2026
Today’s views #iceland
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 15/09/2026
Yesterday’s views #iceland
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 13/09/2026
Today’s views #iceland
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 13/09/2026
Yesterday’s views #iceland
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 11/09/2026
Also saw four different humpback whales today! #iceland #whales
020 2
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 11/09/2026
Yesterday's views in #iceland
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 08/09/2026
"Cat's Law: The more a software team fixates on demonstrating short-term performance in their environment, the less they are able to protect the foundation on which long-term performance depends." -- Cat Hicks #softwareteams
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 08/09/2026
More northern lights #iceland
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 08/09/2026
Northern lights #iceland
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 07/09/2026
Today's views: #iceland
011 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 06/09/2026
Hello Iceland 🇮🇸
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 26/08/2026
I've added the following talks to Awesome Talks: - Patterns for Coding with AI by Lada Kesseler - Rethinking Software Development - Insights From 20+ Years In The Field by @alexthurow github.com/JanVanRyswyck/awesome-ta… #awesometalks
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 26/08/2026
From LLMs and performative productivity by Josh Collinsworth: joshcollinsworth.com/blog/productiv… #shared
If LLM code was reliably of higher quality than human code, then LLMs would be making software more accessible, more maintainable, more performant, more usable, and more reliable. And I promise you: the people who care about those things would be absolutely thrilled about that! Accessibility advocates, open source maintainers, performance engineers, UX workers, reliability engineers, support teams, QA—we could expect them all to be elated, if LLMs were actually moving the metrics they care about.
But that’s pretty much the opposite of what’s happening.
040 4
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 20/08/2026
On Tuesday 22 September, I’ll be presenting "𝐞𝐗𝐭𝐫𝐞𝐦𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 – 𝐓𝐡𝐞 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐖𝐞 𝐋𝐨𝐬𝐭” at iLean's Agile Kitchen. This talk will be a deep dive into the origins and core practices of eXtreme Programming, and will explain why these ideas are still very […] [Original post on mastodon.social]
001 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 12/08/2026
Happy World Elephant Day to all who celebrate! I know I will. #SheldrickWildlifeTrust #ElephantHaven #elephants www.sheldrickwildlifetrust.org www.elephanthaven.com/en/home
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 04/08/2026
I've only read through the first chapter, but I can already feel that this is going to be an interesting book authored by @grimalkina. #softwareteams
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 30/07/2026
𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫: So I asked my LLM agent to make a change to the code. It made the change, but it also introduced a subtle bug that went unnoticed during the code review. 𝐎𝐭𝐡𝐞𝐫 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫: Did you add the line “Don’t introduce bugs to the codebase” to the Claude.md […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 19/07/2026
Current view
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 10/07/2026
Something to think about during a quiet moment. #llm #softwareengineering #softwaredevelopment
020 2
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 07/07/2026
The talk “LLM-Assisted Coding - A Systems Perspective” by @d_stepanovic has been added to Awesome Talks. github.com/JanVanRyswyck/awesome-ta… #awesometalks
100 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 06/07/2026
I just published a brand new mix with the latest summer beats: soundcloud.com/dj-jakke/attic-jam-s… #djing #housemusic
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 02/07/2026
Think of it like driving a car: small adjustments of the steering wheel minimise the risk of going off course. This superpower will become even more critical in the age of LLMs, as they tend to steer us towards larger batches of work. Learning splitting […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 23/06/2026
Added the talk "Being The Human in the Loop" by @kevlin to #awesometalks github.com/JanVanRyswyck/awesome-ta…
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 18/06/2026
Indirect inputs and outputs are essential to understanding the different kinds of test doubles. This concept helps to determine when to use a dummy or stub, and when to use a spy or mock. You can read more in the following article […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 10/06/2026
What if a defect in your system is actually a missing test? The Saff Squeeze technique helps you find both the defect and the missing test. A practical approach to debugging that leaves your codebase stronger. Read more about it in my latest article […] [Original post on mastodon.social]
010 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 08/06/2026
Now that the cat is out of the bag, I'm happy to share that I'll be presenting my talk "𝐓𝐡𝐞 𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐜𝐞 𝐎𝐟 𝐄𝐱𝐭𝐫𝐞𝐦𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 𝐈𝐧 𝐓𝐡𝐞 𝐀𝐠𝐞 𝐎𝐟 𝐋𝐋𝐌𝐬" at the first edition of the Building Bruges conference. In this talk, I'll take a deep dive into the […] [Original post on mastodon.social]
001 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 12/05/2026
If there’s one thing LLMs are especially good at, it’s coming up with examples of code smells and refactoring exercises. Often, I don’t even have to ask them to generate bad code. They just do it by themselves. 😄
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 27/04/2026
𝐓𝐨𝐝𝐚𝐲, 𝐀𝐩𝐫𝐢𝐥 27, is the last day to secure your spot at the 𝐞𝐚𝐫𝐥𝐲-𝐛𝐢𝐫𝐝 𝐫𝐚𝐭𝐞 for my workshop 𝐖𝐞𝐥𝐥-𝐁𝐚𝐥𝐚𝐧𝐜𝐞𝐝 𝐓𝐞𝐬𝐭-𝐃𝐫𝐢𝐯𝐞𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. Join us on 𝐌𝐚𝐲 21-22, 2026 at 𝐓𝐡𝐞 𝐁𝐫𝐚𝐢𝐧 𝐄𝐦𝐛𝐚𝐬𝐬𝐲 𝐢𝐧 𝐀𝐧𝐭𝐰𝐞𝐫𝐩 . Don’t miss this final chance to invest in your skills at a reduced […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 23/04/2026
Letting the implementation details of the Subject Under Test seep into your test code quickly becomes problematic. It harms readability, forcing readers to decipher the test’s behavior, sometimes even debug it, just to understand what’s happening. Tests […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 21/04/2026
On Thursday May 7, I'll be hosting my workshop "Testing Done Right" together with the Software Captains Academy. Are you interested to learn more about how to build quality into software, rather than test it in later? Then join me in this workshop. (1/2) #testing #qa #tdd
100 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 19/04/2026
Due to popular demand, I’ve extended the early-bird discount 𝐮𝐧𝐭𝐢𝐥 𝐌𝐨𝐧𝐝𝐚𝐲, 𝐀𝐩𝐫𝐢𝐥 27! Don’t miss this opportunity to invest in your skills at a reduced rate. 🔗 𝐒𝐞𝐜𝐮𝐫𝐞 𝐲𝐨𝐮𝐫 𝐬𝐩𝐨𝐭 𝐭𝐨𝐝𝐚𝐲 and learn how to build tests that support your development process (see link […] [Original post on mastodon.social]
000 0
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 16/04/2026
A while back, I was fortunate enough to find a second-hand copy of *Object-Oriented Software Engineering: A Use Case Driven Approach* which was almost as good as new. First published in 1992, the knowledge it contains remains remarkably relevant today. For […] [Original post on mastodon.social]
110 1
Jan Van Ryswyck @janvanryswyck.mastodon.social.ap.brid.gy · 14/04/2026
Struggling with brittle tests that slow you down? Join my 𝐖𝐞𝐥𝐥-𝐁𝐚𝐥𝐚𝐧𝐜𝐞𝐝 𝐓𝐞𝐬𝐭-𝐃𝐫𝐢𝐯𝐞𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭workshop on 𝐌𝐚𝐲 21-22, 2026 in Antwerp! Learn how to write reliable, maintainable tests that help you think about software design and prevent defects. Early -bird […] [Original post on mastodon.social]
000 0