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Top 5 Java junit-jupiter Projects
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The Log4j project uses JUnit for their testing suites — a tool loved for its unit tests in particular. The Log4j codebase contained a mixture of JUnit4 and JUnit5, so their team asked if we could take over the migration they started. We had our scope: we’d focus on testing, and deliver the upgrade to JUnit5. This also meant we didn’t need to fully learn the entire codebase to contribute. If you’ve done a migration, you’ll know it can be time-consuming, so we were excited to take this off the team’s hands. Not only can we contribute to raising the codebase quality even further and strengthening the project, it’s unlikely to be the kind of work that introduces a big bug someone needs to take care of later. Double win!
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Project mention: Instancio: A Java library for automating data setup in unit tests | news.ycombinator.com | 2025-12-28
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maven-it-extension
Experimental JUnit Jupiter Extension for writing integration tests for Maven plugins/Maven extensions/Maven Core
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taskmanager
This project provides a simple REST API and a web interface for managing tasks. It is built using Quarkus and provides endpoints for creating, retrieving, updating, and deleting tasks. Additionally, there is a corresponding implementation of this project using Spring Boot available in the `spring` branch of this repository. (by denis-arruda)
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itf-example-article-part-v
Example project for the blog article: Maven Plugin Testing - in a Modern Way - Part V
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
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A note from our sponsor - SaaSHub
www.saashub.com | 20 Jul 2026
Index
What are some of the best open-source junit-jupiter projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | junit-framework | 7,049 |
| 2 | instancio | 1,155 |
| 3 | maven-it-extension | 102 |
| 4 | taskmanager | 2 |
| 5 | itf-example-article-part-v | 1 |
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