If you deleted all assertions, would your coverage drop? Probably not by much, and that’s the problem. Julius Mischok explains why #PIT mutation testing is the missing layer on top of JaCoCo.

Test your tests with PIT: https://javapro.io/2026/01/21/test-your-tests-mutation-testing-in-java-with-pit/

#Java #TDD #MutationTesting #JUnit5

Legacy code still stuck with #JUnit4? Jean Donato shows how hybrid setups silently rot your test base—and what you must do to regain control.
From dependency analysis to rewrite automation: https://javapro.io/2025/09/10/mastering-junit-navigating-between-old-and-new-versions-for-a-smarter-test-strategy/

#Java #JUnit5 #TDD #CleanCode #JAVAPRO @OpenRewrite @BeforeEach

Want to migrate to #JUnit5 but stuck with legacy test libraries? Jean Donato shows how to identify hidden JUnit 4 deps, use @BeforeEach correctly, and cleanly transition with @OpenRewrite.

Read his Step-by-step guide now: https://javapro.io/2025/09/10/mastering-junit-navigating-between-old-and-new-versions-for-a-smarter-test-strategy/

#Java #TDD #CleanCode #JAVAPRO

⚠️ It's official: the #junit5 GitHub repository is gone!

Well, actually... it's only been renamed to #junit-framework. 😎

Plus, everything should redirect fine. 🙈

https://github.com/junit-team/junit-framework

The current logo of #JUnit5 contains the number 5, so we need a new logo for #JUnit ... without a number.

Any ideas?

https://github.com/junit-team/junit5/issues/4576

#JUnit5: 8 years, 12 updates – still testing like it’s 2017? Catch up at #JCON2025! Hands-on coding with #JUnit experts Marc Philipp & Christian Stein.
Learn modern testing: lifecycle, tags, parameterized tests & extensions.

Read more via JAVAPRO: https://javapro.io/2025/04/28/junit-5-eight-years-of-innovation-many-java-developers-are-falling-behind/

#Java

Still writing tests like it’s 2015?

Catch up with #JUnit 5 with Marc Philipp & Christian Stein.

Hands-on. From basics to custom extensions.
All from the Team Lead of JUnit and the #JDK developer of #Oracle

🎟️ Workshop seats: €19 → https://2025.europe.jcon.one/tickets

#JUnit5 #JavaTesting #JCON2025

NEWS - High demand: The #JCON2025 workshops are now live. #EclipseStore #JUnit5 #Helidon & #AI workflows – featuring #Java experts like @sormuras @svenruppert @mstoodle & more

Tickets are limited. Some attendees may get a free @jcon_conference pass.
Read: https://javapro.io/2025/04/10/high-demand-workshops-at-jcon-europe-2025-tickets-available-now/