As a fellow maintainer of an open source project, this is an intense and somewhat scary read. Thanks to @grobmeier.de for being so open to talk about what he experienced and @github.com for initiating their Secure Open Source Fund! github.blog/open-source/...

📢 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...

I‘m really happy that the #JUnit 6.0 went out today. Thanks to the team for making it happen!

✨ 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!

NOW is the time to try out #JUnit 6 before it goes GA! 😎 So, please try out 6.0 RC1, and let us know if you run into any issues. Happy Testing! ✅

What’s next for JUnit? See @marcphilipp.de’s session from #IntelliJIDEAConf for updates on versions 5.12, 5.13, and the upcoming 6.0 preview 👉 youtu.be/-cY5BJaHz6E

✨ New blog post: "STF Milestone 5: Discovery issues" Ever written a test that wasn't being executed? 😱 #JUnit 5.13 introduced a mechanism for reporting such issues found during test discovery. 👉 marcphilipp.de/blog/2025/08... Thanks to the @sovereign.tech fund for their support!

#JUnit 6.0.0-M2 is ready for testing! 📰 Everything in 6.0.0-M1 🛑 Support for cancelling test execution ⏭️ New `--fail-fast` mode for ConsoleLauncher 🦺 Null-safe `computeIfAbsent` methods for stores 🧐 Strict evaluation of enum-based configuration parameters junit.org/junit5/docs/...

If you ever need to adapt a #JUnit3 TestSuite to run directly in #JUnit #Jupiter, it's actually possible with dynamic tests! 😎 Here's how I run the @⁠Inject TCK in the @SpringFramework. github.com/spring-proje... Kudos to @marcphilipp.de for suggesting the dynamic test idea.

#JUnit Logo Contest Update Here are some of the top contenders. Please let us know your thoughts. And additional proposals are welcome! github.com/junit-team/j...

Kudos to @marcphilipp.de for becoming a #Java Champion‬! 👏 Take advantage of free access to @JetBrains IDEs by joining our Developer Recognition Program: www.jetbrains.com/shop/eform/d...

We really need a new #JUnit logo! 🤣 Proposals are welcome! github.com/junit-team/j...

✨ New blog post: "STF Milestone 4: Parameterized test classes" JUnit 5.13 introduced parameterized test classes (in addition to methods). They are a powerful testing tool that has long been missing from JUnit Jupiter... 👉 marcphilipp.de/blog/2025/06...

#JUnit 5.13.1 is released! 🐞 Fix regressions introduced in 5.13.0 junit.org/junit5/docs/...

The slides and code examples for my talk about #JUnit at #IntelliJIDEAConf are now available on marcphilipp.de/en/talks/

Coming up soon at #IntelliJIDEAConf: @marcphilipp.de from the JUnit team walks you through the latest in JUnit 5.12 and 5.13, and what’s coming in 6.0. Better reports, better tests, and new ways to structure them. Don’t miss it! Watch here: youtube.com/live/qg6tj8T...

#JUnit 5.13.0 is released! 🪄 ClassTemplate and ParameterizedClass support ⚠️ Discovery issue reporting for test engines ♻️ Resource management for launcher sessions and execution requests 🔍 Test discovery support in EngineTestKit 👾 ConsoleLauncher improvements junit.org/junit5/docs/...

The #JUnit team is looking for ideas and proposals for a new logo for the upcoming JUnit 6.0 release! Please see github.com/junit-team/j... for ground rules. We are looking forward to your comments and submissions!

The slides and exercise code of @sormuras.bsky.social' and my JUnit workshop at #JCON2025 is now available on GitHub: github.com/marcphilipp/...

#JUnit 5.13.0-M3 is ready for testing! ⚠️ Reporting of discovery issues for test engines ♻️ Resource management for launcher sessions and execution requests junit.org/junit5/docs/...

Introducing our #IntelliJIDEAConf speakers and talks! 🎙 Catching Up With JUnit, by @marcphilipp.de 🗓 June 4, 12:00 pm UTC Get the full details and register for free today! 👉 jb.gg/pgpngl

✨ New blog post: "STF Milestone 3: Release verification and automation" A major goal of the Sovereign Tech Fund is to help projects become more sustainable. For #JUnit, one activity in desperate need of improvement in this area was performing a release. marcphilipp.de/blog/2025/04...

Together with @[email protected], I will be hosting a workshop at @[email protected] in Cologne on May 12. As you might have guessed, it's about "Catching up with #JUnit 5". See you there? schedule.jcon.one/session/837895 (1/2)

This is the moment you've all been waiting for... 🥁 #JUnit Jupiter support for @⁠ParameterizedClass as a companion to the existing @⁠ParameterizedTest support! 🚀 @marcphilipp.de has put a lot of work into this, and we're eager for you to try it out and provide feedback!!!

✨ New blog post: "STF Milestone 2: Open Test Reporting" Finally, a reporting format fully-compatible with JUnit (and other tools) and a new shiny HTML report generator. 👉 marcphilipp.de/blog/2025/03...

#JUnit 5.12.0 is released! 📎 Output file attachments for tests and containers 📰 Improvements to the Open Test Reporting XML output 🔒 Resource lock definition improvements 🧵 Thread dumps on test timeouts ✨ Numerous enhancements to existing features junit.org/junit5/docs/...

Please give #JUnit 5.12 M1 a try and let us know what you think!

#JUnit 5.12 RC1 is ready for testing! 📎 Output file attachments for tests and containers 📰 Improvements to the Open Test Reporting XML output 🔒 Resource lock definition improvements 🧵 Thread dumps on test timeouts ✨ Numerous enhancements to existing features junit.org/junit5/docs/...

#JUnit 5.12 will support user-defined #Java versions in condition annotations. This is useful when running tests on a JVM not yet supported by the JRE enum constants like JAVA_26. For example: @⁠EnabledOnJre(versions={25,26}) @⁠EnabledForJreRange(minVersion=26) junit.org/junit5/docs/...

✨ New blog post: "STF Milestone 9: Jupiter extension improvements" Resolving a long-standing issue in JUnit Jupiter's extension API 👉 marcphilipp.de/blog/2025/01... #JUnit #Jupiter #SovereignTechFund #FOSS

I finally got around to writing a blog post about receiving support from the @sovereign.tech to work on JUnit in 2024 and 2025. Let me know if you have any questions! marcphilipp.de/blog/2025/01...

FYI: We (the JUnit Team) are planning on #JUnit6 with a #Java 17 baseline, hopefully to be released in the Fall of 2025. 😎 github.com/junit-team/j...

"The JUnit Crew Presents What's New" — Join us (@sormuras.bsky.social, @marcphilipp.de, @sambrannen.com, and @jderancourt.bsky.social) on November 27 for the IntelliJ IDEA Livestream! blog.jetbrains.com/idea/2024/11...