xUnit Test Patterns: Contract Test — https://zalas.pl/contract-test/
Contract Tests are examples that describe the behaviour of an abstraction by expressing what cannot be encoded in the type system. These are typically helpful in testing adapters as defined in the Ports & Adapters architecture.
Examples in #kotlin, but the pattern is universal.
Hexagonal - My Passion
#JazzFM #Jazz #NowPlaying #Hexagonal
#Hexagonal #Architecture folks: how do you deal with the fact that a repository implementation needs access to aggregate implementation classes to materialize them, incl. referenced value objects etc. That makes all those types end up in a secondary port, doesn't it? What's left for the application core then?
Also a suggestion for companies with stands at #FOSDEM ... Funky shaped stickers area all well and good but if you make them smaller and "tilable" then people are more likely to include yours on their laptop. Also probably less wasteful in the production line ... Here's a talk on the subject I saw in 2015. For some reason there aren't many this shape any more #sticker #hexagon #hexagonal
Yosuke Furukawa: "Hexagonal Sticker as a Service"
https://youtube.com/watch?v=KKymGcL0PIk&si=ucvlZZ96kRkdSpe7
Trying to create complex #software managing kernel buffers.
This needs tests.
"#functional core, imperative shell" - Testing management should not need the kernel.
I started mocking with a generic backend. Looks annoying.
"imperative shell"
The mocked generic is becoming a spaghetti horror.
"functional core" - and then it clicked.
I separated just the buffer manager, made it generic over buffer type. I can now feed it fake buffers and test it.
#jMolecules 2023.2 and 2025.0 RC1 released! The former ships a fix for the #Hexagonal architecture verification and improvements for annotation retention. The latter #JPMS module descriptors and a baseline upgrade to Java 17. Grab 'em while they're hot! 
️
- https://github.com/xmolecules/jmolecules-bom/releases/tag/2023.2.0
- https://github.com/xmolecules/jmolecules-bom/releases/tag/2025.0.0-RC1
Hey folks!
I‘m looking for new professional opportunities from February 25 on!
If your org is hiring or you have recommendations … shoot me a message, please! 
#dddesign #golang #hexagonal #eventsourcing #cqrs #eventdriven #tdd
Reposts very much appreciated! 
Hacking Haptics: The 19-Sensor Patch Bringing Touch to Life https://hackaday.com/2024/11/18/hacking-haptics-the-19-sensor-patch-bringing-touch-to-life/ #tactilefeedback #WearableHacks #hexagonal #feedback #wearable #haptics #sensory #haptic #patch #touch #News
Hacking Haptics: The 19-Sensor Patch Bringing Touch to Life - On November 6th, Northwestern University introduced a groundbreaking leap in hapti... - https://hackaday.com/2024/11/18/hacking-haptics-the-19-sensor-patch-bringing-touch-to-life/ #tactilefeedback #wearablehacks #hexagonal #feedback #wearable #haptics #sensory #haptic #patch #touch #news
In case you missed my three-part Ports and Adapters (#Hexagonal #HexagonalArchitecture) tutorials, here are the links:
Part 1:
https://youtu.be/TC4e0hokDB8
Part 2:
https://youtu.be/V4nj8MXUv5k
Part 3:
https://youtu.be/UpesTQhQhTE
Next up on my YouTube channel...
Design Accelerator: Ports and Adapters Architecture Part3
After explaining several aspects of the Ports and Adapters Architecture in Parts 1 and 2, Vaughn wraps up this topic with examples of how to structure your architecture using modules using Java packages and C# namespaces.
#SoftwareArchitecture #Hexagonal #HexagonalArchitecture #PortsAndAdaptersArchitecture
#DidYouKnow: A #Hexagonal #Number is a figurate number that represents the number of distinct dots in a pattern of dots.
The pattern consists of the outlines of regular hexagons with sides up to n dots, when the hexagons are overlaid so that they share one vertex.
I'm searching for a new professional opportunity from February on, an earlier start is possible but I'm not in a rush!
I bring along 25+ years of experience as a software developer, architect, team lead, learning designer (trainer).
Please share! :-)
Some of my skills and interests:
#golang #dddesign #hexagonal #portsandadapters #collaboration #agile #eventsourcing #cqrs
Hexagonal curves animation
https://youtu.be/vqGeaY188Ew
To create #hexagonal #curves you can use the Superellipse: https://en.m.wikipedia.org/wiki/Superellipse
Down Memory Lane
(Ironic, when looking at the title of the track I used 
)
Pont Neuf Records celebrates its 8th birthday with a new volume of its popular Hexagonal Club series. #music #pontneuf #hexagonal #club #compilation #celebration
https://evl.one/pont-neuf-records-presents-hexagonal-club-vol-5
