💻 **Uber Migrates 75,000+ Test Classes from Junit 4 to Junit 5 Using Automated Code Transformation**

Uber engineers migrated over 75,000 test classes from JUnit 4 to JUnit 5 using automated code transformation with OpenRewrite and internal orchestration. By enabling the JUnit Platform for dual execution with Bazel and validating changes through CI, the team modernized testing in...

🔗 https://www.infoq.com/news/2026/04/uber-junit4-junit5-migration/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=global

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