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JUG Noord @jugnoord.bsky.social · 2d

Our next meetup will take place on November 4th at ING Leeuwarden to help you improve your testing with @timtebeek.github.io covering AssertJ and @simoneromani.bsky.social mutating tests for more confidence.

Sign up at www.meetup.com/jug-noord/ev... !

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AssertJ @assertj.github.io · 6d

It's great to see the community actively watching over the early development of AssertJ 4!

Jfokus @jfokus.se · 7d

🧪 Deep Dive Monday at #Jfokus - Break Your Testing Habits with Tim te Beek & Rick Ossendrijver

Unlearn the old, master the new - JUnit 6, AssertJ 4 & modern testing practices.
Forge your path in the halls of code ⚡
👉 www.jfokus.se

#DeveloperConference #Java #Testing #JUnit #AssertJ #CleanCode

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Sam Brannen @sambrannen.com · 11d

🍃 ICYMI, #SpringFramework 7.0 and #SpringBoot 4.0 will have a #JUnit Jupiter 6.0 baseline! 🚀

github.com/spring-proje...

github.com/spring-proje...

Upgrade to JUnit 6 · Issue #35124 · spring-projects/spring-framework

Overview Since JUnit 6.0 M1 has been released, we should start running our test suite using JUnit 6 for the following reasons. We want to ensure that our own test suite works with JUnit 6 in Gradle...

github.com

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Stefano Cordio @scordio.github.io · 14d

📢 Jimfs JUnit Jupiter 1.0.0 is also released!

✨ Java 17 baseline
⬆️ Upgrade to JUnit 6
📖 Brand new user guide

🧑‍💻 Any feedback is welcome!

github.com/scordio/jimf...

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JUnit Team 💙💛 @junit.org · 15d

#JUnit 6.0.0 is released!

✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs

docs.junit.org/6.0.0/releas...

JUnit Release Notes

docs.junit.org

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JUnit Team 💙💛 @junit.org · 15d

#JUnit 5.14.0 is released!

🐞 Bug fixes and enhancements since 5.13.x
✈ Deprecations along with new APIs to ease migration to JUnit 6

docs.junit.org/5.14.0/relea...

JUnit 5 Release Notes

docs.junit.org

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AssertJ @assertj.github.io · 15d

Many thanks to our new sponsor, LambdaTest!

www.lambdatest.com

LambdaTest - AI Powered Testing Tool | AI Testing Agents On Cloud

Power your software testing with AI and cloud. Test intelligently, deploy and scale faster with LambdaTest unified testing platform.

www.lambdatest.com

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Sam Brannen @sambrannen.com · 16d

The #JUnit 6.0 GA Release Notes are almost set in stone. 🗿

docs.junit.org/snapshot/rel...

And yeah, there's only like 1 or 2 open tasks for GA. 🤓

Something may be brewing... ☕️

JUnit Release Notes

docs.junit.org

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Andres Almiray @andresalmiray.com · 21d

The next edition of Hack.Commit.Push Switzerland🇨🇭will take place in Rotkreuz LU this November 22nd. Care to join us for some Open Source hacking? It’s for a good cause!

switzerland2025.hack-commit-pu.sh

hack-commit-push · One Day to Contribute to Open Source

switzerland2025.hack-commit-pu.sh

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JUnit Team 💙💛 @junit.org · 22d

#JUnit 5.14.0-RC1 is ready for testing!

🐞 Bug fixes and enhancements since 5.13.x
✈ Deprecations along with new APIs to ease migration to the upcoming 6.0 release

docs.junit.org/5.14.0-RC1/r...

JUnit 5 Release Notes

docs.junit.org

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Brian Fox @brianfox.bsky.social · 22d

Free isn’t free: the infrastructure behind open source has real costs, and it’s time we aligned usage with responsibility.

This morning we jointly launch a new blog and open letter on sustainable stewardship.

www.sonatype.com/blog/from-ab...

From Abuse to Alignment: Why We Need Sustainable Open Source Infrastructure

Open source relies on shared infrastructure. Learn why sustainable stewardship is critical to keep ecosystems like Maven Central strong.

www.sonatype.com

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AssertJ @assertj.github.io · 23d

📢 AssertJ 3.27.6 has been released!

This fixes a 🐛 regression related to the module descriptor 🧩

Happy assertions!

github.com/assertj/asse...

Release v3.27.6 · assertj/assertj

🐛 Bug Fixes Core Add missing export for org.assertj.core.annotation #3951 ❤️ Contributors Thanks to all the contributors who worked on this release: @duponter

github.com

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AssertJ @assertj.github.io · 26d

📢 AssertJ 3.27.5 has been released!

This 🛠️ upgrades ByteBuddy to its latest version to ensure smooth compatibility with Java 25 ☕

Happy assertions!

github.com/assertj/asse...

Release v3.27.5 · assertj/assertj

⚡ Improvements Core ByteBuddy in AssertJ 3.27.4 not compatible with Java 25 #3946 🔨 Dependency Upgrades Core Upgrade to Byte Buddy 1.17.7 #3947 Upgrade to JUnit BOM 5.13.4 #3947 Guava Upgrade ...

github.com

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Sam Brannen @sambrannen.com · Sep 14

🍃 #Spring Framework 7.0 builds successfully against #JUnit 6.0 RC3! 🚀

And this is all that's required to make the upgrade from JUnit 5.13.x to 6.0 possible:

github.com/sbrannen/spr...

Upgrade to JUnit 6.0 RC3 · sbrannen/spring-framework@01ae92e

See gh-35124

github.com

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Spring I/O @springio.net · Sep 12

🍃 Better Assertions with AssertJ by @timtebeek.github.io @ Spring I/O 2025

▶️ Video: youtu.be/k7sXn1v4fYc

🔗 Slides: 2025.springio.net/slides/bette...

🛠️ Repo: github.com/timtebeek/be... #springio25

Better Assertions with AssertJ by Tim te Beek @ Spring I/O 2025

YouTube video by Spring I/O

youtu.be

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Sam Brannen @sambrannen.com · Sep 10

Happy 8th Birthday, #JUnit 5! 🥳

JUnit 5.0 GA was released on September 10, 2017, and JUnit 6 is just around corner...

github.com/junit-team/j...

Release JUnit 5.0.0 · junit-team/junit-framework

JUnit 5.0.0 = Platform 1.0.0 + Jupiter 5.0.0 + Vintage 4.12.0 See Release Notes in User Guide.

github.com

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Sam Brannen @sambrannen.com · Sep 9

🍃 Core #Spring Resilience Features: @⁠ConcurrencyLimit, @⁠Retryable, and RetryTemplate.

Coming in Spring Framework 7.0!

Please try out these features and let us know what you think. 😎

spring.io/blog/2025/09...

Core Spring Resilience Features: @ConcurrencyLimit, @Retryable, and RetryTemplate

Level up your Java code and explore what Spring can do for you.

spring.io

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Rafael Winterhalter @rafaelcodes.bsky.social · Sep 3

Tried to give an introduction on the class file API that explains it to anybody working with Java: vimeo.com/1115458585 Courtesy of JavaZone. Thanks for having me.

Java Just Got Easier - Rafael Winterhalter

This is "Java Just Got Easier - Rafael Winterhalter" by JavaZone on Vimeo, the home for high quality videos and the people who love them.

vimeo.com

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JUnit Team 💙💛 @junit.org · Aug 25

#JUnit 6.0.0-RC2 is ready for testing!

📰 Everything in 6.0.0-M1, 6.0.0-M2, and 6.0.0-RC1
🐞 Minor enhancements and bug fixes since 6.0.0-RC1

junit.org/junit5/docs/...

JUnit Release Notes

junit.org

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Sam Brannen @sambrannen.com · Aug 24

Zero open issues for #JUnit 6.0 RC2! 😎

github.com/junit-team/j...

Something may be brewing in the coming days... ☕️

junit-team/junit-framework

✅ The programmer-friendly testing framework for Java and the JVM - junit-team/junit-framework

github.com

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Stefano Cordio @scordio.github.io · Aug 23

You can raise a ticket to Sonatype support for ad-hoc statistics.

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Elias Nogueira 🇧🇷🇳🇱 @eliasnogueira.com · Aug 21

Hard assertions = fast feedback ✅
But when one failure hides others, you lose valuable insight. 😥

Here’s how to use custom soft assertions with AssertJ to make your tests graceful, readable, and thorough:
eliasnogueira.com/assert-with-...

#java #testing #quality

Assert with Grace: Custom Soft Assertions using AssertJ for Cleaner Code - Elias Nogueira

Introduction If you don't know what a soft assertion is, please read Soft Asserts – Why should you use them for Unit and Integration tests? This article is a continuation of Assert with Grace: Custom…

eliasnogueira.com

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Stefano Cordio @scordio.github.io · Aug 22

My OCD says the same, but then reality kicks in...

Stefano Cordio @scordio.github.io · Aug 22

Are you introducing JSpecify and NullAway, and

`@SuppressWarnings({ "DataFlowIssue", "NullAway" })`

is all over the place?

NullAway 0.12.8 to the rescue with `SuppressionNameAliases`! 🥳

github.com/uber/NullAwa...

Configuration

A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead - uber/NullAway

github.com

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Marc Philipp @marcphilipp.de · Aug 21

✨ New blog post: "STF Milestone 6: Improved Kotlin support"

#JUnit 6.0.0-RC1 improves JUnit's #Kotlin story by adding support for suspending functions, sequences, contracts and nullness annotations.

👉 marcphilipp.de/blog/2025/08...

Thanks to the @sovereign.tech fund for their support!

object ImprovedKotlinSupportTests {

val data = sequenceOf( // Sequence<T> support
arguments(1, Month.JANUARY),
arguments(12, Month.DECEMBER)
)

@ParameterizedTest
@FieldSource("data")
// suspending function support for coroutine testing
suspend fun test(value: Int, month: Month?) {
assertNotNull(month) // contracts to support...
assertEquals(value, month.value) // smart casts!
}
}

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