JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open! Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software? 1/3 ⏩

#JUnit 6.1.0-M1 is ready for testing! ✨ New org.junit.start module for usage in compact source files ⚙ Execution mode configuration support for dynamic tests and containers 🏊 New parallel test executor implementation without ForkJoinPool docs.junit.org/6.1.0-M1/rel...

We're happy to present our new logo! 🎉 Have you upgraded to JUnit 6.0, yet? Because we're now ready for 7.0 (just kidding)... 😉

#JUnit 6.0.1 is released! #️⃣ Introduce commentCharacter for Csv{File}Source 🔇 Allow disabling JUnit Vintage engine discovery issues 🐞 Bug fixes and enhancements since 6.0.0 docs.junit.org/6.0.1/releas...

#JUnit 5.14.1 is released! 🐞 Bug fixes and enhancements since 5.14.0 docs.junit.org/5.14.1/relea...

📢 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...

#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 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 5.14.0-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...

A big thank you to our new BRONZE SPONSOR, LambdaTest! #supportJUnit

Please give #JUnit 6.0 RC3 a try and provide us feedback if you run into any issues! This is really, truly, hopefully the last RC before 6.0 GA. 😇

#JUnit 6.0.0-RC3 is ready for testing! 📰 Everything in 6.0.0-M1, M2, RC1, and RC2 ⚠ Replacements for problematic APIs along with deprecations 🐞 Minor enhancements and bug fixes since 6.0.0-RC2 docs.junit.org/6.0.0-RC3/re...

#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/...

✨ 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!

#JUnit 6.0.0-RC1 is ready for testing! 📰 Everything in 6.0.0-M1 and 6.0.0-M2 🏷 Improved display names for parameterized classes/tests ♻ `MethodOrderer.Default` and `ClassOrderer.Default` for `@Nested` classes junit.org/junit5/docs/...

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!

It was an honor to participate in of one of the first iterations of the GitHub Secure Open Source Fund's program. It was great to have dedicated time to think about security and apply our lessons learned. Thank you to @github.com and all partners for making this possible! github.blog/open-source/...

#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/...

#JUnit 5.13.4 is released! 🐞 Bug fixes and minor improvements junit.org/junit5/docs/...

#JUnit 5.13.3 is released! 🐞 Bug fixes and minor improvements 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 6.0.0-M1 is ready for testing! ✨ Require Java 17 and Kotlin 2.2 🌄 JSpecify nullability info 🚟 Kotlin suspend function support 🛫 Integrated custom JFR events 🚅 FastCSV-backed Csv{File}Source 🧹 Remove deprecated APIs and behaviors junit.org/junit5/docs/...

#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...

Très heureux de voir le retour de @jderancourt.bsky.social sur scène de l'équipe @junit.org, qui nous présente "Rendre ses tests concis et évolutifs grâce à JUnit 5 & cie" au @breizhcamp.org !

#JUnit 5.13.2 is released! ⚠️ Fix discovery issue detection for inner classes and abstract methods 🐞 Bug fixes and minor improvements junit.org/junit5/docs/...

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!

So, do you still think that #JUnit 5 is "the new" thing? It quite isn't. The crowdfunding campaign for JUnit Lambda was ten years ago this year. When we realised that last week at #JCON that made me feel old. JUnit still rocks, though. Great #Java framework.

The single and only undisputed test framework in the Java ecosystem. Everyone relies on it. There were a few attempts like TestNG, but short lived. Spock relies on JUnit too. Everyone should appreciate.

#JUnit 5.13.0-RC1 is ready for testing! 🪄 ClassTemplate and ParameterizedClass support ⚠️ Discovery issue reporting for test engines ♻️ Resource management for launcher sessions and exec. requests 🔍 Test discovery support in EngineTestKit 🐞 Bug fixes and minor improvements junit.org/junit5/docs/...

#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/...

A huge thank you to our new GOLD SPONSOR, @netflix.com! #supportJUnit

#JUnit 5.12.2 is released! 🐞 Fix regression when using CleanupMode.ON_SUCCESS junit.org/junit5/docs/...

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)

#JUnit 5.13.0-M2 is ready for testing! 🐞 Fix regression introduced in 5.13.0-M1 junit.org/junit5/docs/...

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 5.13.0-M1 is ready for testing! 🪄 Introduce ClassTemplate and ParameterizedClass support 🗒 Add stdout/stderr redirecting options to ConsoleLauncher 🔍 New test discovery support in EngineTestKit 🐞 Bug fixes and other minor improvements junit.org/junit5/docs/...

#JUnit 5.12.1 is released! 🐾 Minor enhancements since 5.12.0 junit.org/junit5/docs/...

#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/...

#JUnit 5.12 RC2 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 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 M1 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/...

✨ 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