Marc Philipp

The Pioneer team was not very active over the past months, but we (primarly Mihály) found some time to finish Pioneer 3.0.0-RC1. It's mostly a lift to JUnit 6 and removing of the extensions which were contributed to the @junit.org framework itself, but still improvements. github.com/junit-pionee...

🔐 TestLens now supports OpenID Connect! The setup-testlens GitHub Action can now authenticate via OIDC instead of the job's GITHUB_TOKEN, so no secret leaves your build environment. 👉 Read more: testlens.app/blog/2026/10... #java #github #oidc #security

TestLens CLI 1.1.1 is out with a security fix. Please upgrade! Earlier releases trust certificates from the compromised eMudhra intermediate CAs. github.com/testlens-app/cli/security/advisories/GHSA-f3m4-mpfr-4fc2 #Java #GraalVM #Security

🚨 Release Alert: TestLens CLI 1.1.0 is out 🚨 Version 1.1.0 makes the terminal UI faster to work with: 🔎 Press / to fuzzy-search the test table. ✨ The TUI now supports hjkl navigation, alongside the arrow keys. Read the announcement on our blog: testlens.app/blog/2026/10... #java #gradle #maven

Introducing the TestLens CLI! 🥱 Tiered of scrolling through CI logs to get to the bottom of a test failure? 🤝 The new TestLens CLI gives access to your test results right from the command line! 👀 Read more: testlens.app/blog/2026/10... #gradle #maven #java #testing #tui #cli #ai

New blog post: Mirroring the #JUnit repository to #Codeberg GitHub's wobbly availability and aggressive AI push have prompted second thoughts about relying on it exclusively for JUnit's repositories. [...] marcphilipp.de/blog/2026/09...

When we started TestLens, we knew who we were building it for: teams that take their test suites seriously. So it means a lot that some of the most widely used testing projects in the JVM world now use TestLens on their own pull requests. 👉️ Read more: testlens.app/blog/2026/09... #java #junit

New blog post: Renovate – teaching an old dog new tricks How to use Renovate's custom managers to automatically update dependency versions in files it doesn't support out of the box, using Node and npm versions in a Gradle project as an example marcphilipp.de/blog/2026/08...

New blog post: One required check to rule them all A pattern for having a single required status check for GitHub Actions workflows marcphilipp.de/blog/2026/08...

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...

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...

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...

#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

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.

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

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

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

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...

✨️ 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!

✨ 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!

✨ 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!

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 ⏩

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...

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/...