Ever needed help with a JUnit test or extension? Core JUnit team members now offer commercial support with OpenElements. ✅ 4–8 support hours per month ✅ Guaranteed response times ✅ Quarterly expert webinar ✅ Monthly newsletter Unused hours go back into JUnit. open-elements.com/support-care...

Support & Care - Open Elements

Support & Care is a program for the sustainable further development, stabilization and support of open source software (OSS).

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New blog post: Reflecting on STF support and looking ahead Thanks to the @sovereign.tech fund, I was able to work full-time on JUnit for about 16 months in 2024 & 2025. It’s time to both reflect and look ahead at what’s next for me and for JUnit. 👉 marcphilipp.de/blog/2026/08...

Reflecting on STF support and looking ahead • Marc Philipp

Thanks to the Sovereign Tech Fund (STF), I was able to work full-time on JUnit for about 16 months in 2024 and 2025. It’s time to reflect and assess whether…

marcphilipp.de

TestLens now Generally Available! We are proud to announce that TestLens is now available for all GitHub users! If you develop with Java/Kotlin on GitHub, TestLens is here to ease your pain with flakiness in your test pipelines. testlens.app/blog/2026/07...

TestLens now Generally Available!

Get it now: free for personal accounts and open-source projects; free trials for everyone!

testlens.app

#JUnit 6.1.2 is released! 🐞 Bug fixes and enhancements since 6.1.1 docs.junit.org/6.1.2/releas...

🟢 🟡 🟠 🔴 Are my tests flaky and how bad is it? The Test Dashboard answers these questions! ✏️ Read more in our blog: testlens.app/blog/2026/07... 👀 See it in action: github.com/junit-team/j... 🚀 Try TestLens yourself: github.com/marketplace/... #Java #Kotlin #JUnit #Gradle #Maven

Meet the Test Dashboard

If a test fails, TestLens now gives you the data you need to determine if flakiness is involved.

testlens.app

The junit-framework repository now has an official mirror on Codeberg and is open for contributions! 👉 codeberg.org/junit-team/j... To support Codeberg's mission of providing a free and open source collaboration platform, JUnit has joined Codeberg e.V. as a member.

junit-framework

Mirror of the GitHub repository at https://github.com/junit-team/junit-framework/ (PRs welcome on Codeberg!)

codeberg.org

Flaky GitHub PRs are an annoying reality. Just when you think a change is good to merge, you are greeted with an ❌. To unblock your PR, you need to rerun lengthy test pipelines just because of one rogue test. TestLens can help you: testlens.app/blog/2027/05... #Java #JUnit #Gradle #Maven

Rerun Pull Request Builds Faster by Reusing Successful Test Results

Flaky GitHub Pull Request (PR) builds are an annoying reality in many projects and rerunning workflows manually is a recurring task. TestLens makes this less painful by offering convenient and quick r...

testlens.app

Test failures on CI often result in lengthy root cause analysis involving scrolling through GitHub Actions CI logs. The new Test Failure Details feature helps by surfaces test failures directly in Pull Requests: testlens.app/blog/2026/03... #ContinuousIntegration #Testing #Java #GitHub

Analyze Test Failures Quickly With the Test Failure Details View

Test failures on CI often result in time consuming root cause analysis involving scrolling through lengthy GitHub Actions CI logs. To address this well-known pain point, we've introduced the test fail...

testlens.app

Today's the day! Happy to share what I've been working on with Benedikt and Jendrik. Let us know if you are interested in participating in the private beta or have any questions! #TestLens

TestLens@testlens.app · 6mo ago

Know this problem? You’re done implementing a feature, but getting your PR through the CI pipeline is tedious. TestLens launches to accelerate #Java and #Kotlin pull request workflows with easy-to-read test failure summaries and faster retries. Join the private beta! testlens.app/blog/2026/02...

Meet the #JUnit team in Cologne, Germany, in April at #JCON! @marcphilipp.de will give a talk about the road to JUnit 6 and Christian and Rien will be attending as well. Please use the following link to support JUnit (10% of the proceeds will go back to the project): pretix.eu/impuls/europ...

Voucher redemption :: JCON EUROPE 2026

pretix.eu

✨️ New blog post: "STF Milestone 10: Documentation improvements" Modernizing @junit.org's documentation by adopting @antora.org and hosting on statichost.eu 👉️ marcphilipp.de/blog/2026/01... Thanks to the @sovereign.tech fund for their support!

STF Milestone 10: Documentation improvements • Marc Philipp

Personal website

marcphilipp.de

✨ New blog post: "STF Milestone 8: Improved parallel test execution" Parallel execution support for the Vintage engine, resource lock improvements, and a new #JUnit Platform implementation of parallel execution 👉 marcphilipp.de/blog/2026/01... Thanks to the @sovereign.tech Fund for their support!

STF Milestone 8: Improved parallel test execution • Marc Philipp

Personal website

marcphilipp.de

✨ New blog post: "STF Milestone 7: Safe cancellation" Introducing a safe way to cancel #JUnit test execution early, e.g. after the first test failed, but still execute all cleanup logic. 👉 marcphilipp.de/blog/2025/12... Thanks to the @sovereign.tech Fund for their support!

STF Milestone 7: Safe cancellation • Marc Philipp

Personal website

marcphilipp.de

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 ⏩

Support JUnit

JUnit is maintained by a team of passionate volunteers. This is your chance to give back and support the project!

steady.page

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/...

Inside the breach that broke the internet: The untold story of Log4Shell

Log4Shell proved that open source security isn't guaranteed and isn’t just a code problem.

github.blog

📢 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...

Release v1.0.0 · scordio/jimfs-junit-jupiter

💥 Breaking Changes Jimfs JUnit Jupiter now requires Java 17, in line with JUnit 6 requirements. ⚡ Improvements Add user guide #41 🔨 Dependency Upgrades Upgrade to JUnit 6 #29

github.com

JUnit Team@junit.org · 10mo ago

#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...

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

JUnit Team@junit.org · 10mo ago

#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...

✨ 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! ✅

JUnit Team@junit.org · 12mo ago

#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!

#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/

Talks • Marc Philipp

Personal website

marcphilipp.de

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...

IntelliJ IDEA Conf 2025. Day 2

On June 3–4, 2025, JetBrains is hosting a free virtual event – IntelliJ IDEA Conf.IntelliJ IDEA Conf is a celebration of the developer community, bringing to...

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