Developer tool
JUnit agent skills for Claude Code, Codex and other agents.
- skills
- 84
- official
- 14
- Type
- Developer tool
- Website
- junit.org
- Official GitHub
- junit-team
JUnit skills, ranked
Ranked by score. Sort bymost stars,trending,newest,recently updated
Official (14 skills)
| # | Skill | Repository | Stars | Used in | Tokens | Auto-check | Licence | Updated |
|---|---|---|---|---|---|---|---|---|
| 1 | Fetch and analyze Prow e2e pipeline failures for cloud-provider-azure. | kubernetes-sigs/ | 294 | — | ~3.4k | Automated safety check: Pass | Apache-2.0 | today |
| 2 | Converts Spock/Groovy test files in a Gradle module to equivalent JUnit 5 Java tests. | DataDog/ | 736 | — | ~1.3k | Automated safety check: Pass | Apache-2.0 | today |
| 3 | Convert JUnit 5 @MethodSource/@CsvSource/@ValueSource parameterized tests to @TableTest (JDK8) | DataDog/ | 736 | — | ~950 | Automated safety check: Pass | Apache-2.0 | today |
| 4 | Provides file paths to language-specific reference files for the test ANALYSIS skills (assertion-quality, test-anti-patterns, test-gap-analysis, test-smell-detection, test-tagging). | microsoft/ | 1k | 2 repos | ~1.1k | Automated safety check: Pass | MIT | today |
| 5 | Expert Spring Boot 4 testing specialist that selects the best Spring Boot testing techniques for your situation with Junit 6 and AssertJ. | github/ | 40k | 1 repo | ~1.7k | Automated safety check: Pass | MIT | today |
| 6 | A skill your agent uses when converting Java source files to idiomatic Kotlin, when user mentions "java to kotlin", "j2k", "convert java", "migrate java to kotlin", or when working with .java files… | JetBrains/ | 363 | 3 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 | 3 mo ago |
| 7 | Analyzes the variety and depth of assertions across test suites in any language. | microsoft/ | 1k | — | ~4.1k | Automated safety check: Pass | MIT | today |
| 8 | Generates and writes new unit tests for any programming language — scaffolds .NET test projects, pytest suites, Vitest/Jest suites, Go test files, and JUnit suites, and configures coverage tooling… | microsoft/ | 1k | — | ~2.7k | Automated safety check: Pass | MIT | today |
| 9 | Performs pseudo-mutation analysis on production code in any language to find gaps in existing test suites. | microsoft/ | 1k | — | ~4k | Automated safety check: Pass | MIT | today |
| 10 | Deep-dive audit using the full testsmells.org 19-smell academic catalog for tests in any language. | microsoft/ | 1k | — | ~5.3k | Automated safety check: Pass | MIT | today |
| 11 | Analyzes test suites in any language and tags each test with a standardized set of traits (positive, negative, critical-path, boundary, smoke, regression, integration, performance, security). | microsoft/ | 1k | — | ~4.3k | Automated safety check: Pass | MIT | today |
| 12 | Get best practices for JUnit 5 unit testing, including data-driven tests | github/ | 40k | 1 repo | ~746 | Automated safety check: Pass | MIT | today |
| 13 | Audits existing test code in any language for anti-patterns and quality issues — produces a severity-ranked report (Critical / Warning / Info) with concrete code-level fixes. | microsoft/ | 1k | — | ~4.9k | Automated safety check: Pass | MIT | today |
| 14 | File a GitHub issue for local integration test failures. An agent skill from microsoft/GitHub-Copilot-for-Azure. | microsoft/ | 255 | — | ~628 | Automated safety check: Pass | MIT | today |
Community
| # | Skill | Repository | Stars | Used in | Tokens | Auto-check | Licence | Updated |
|---|---|---|---|---|---|---|---|---|
| 15 | Deep-dive diagnosis of a Playwright test failure already isolated to one Quay Prow/OpenShift CI run: downloads its GCS artifacts (results.json, JUnit, build/pod logs, Jaeger traces), classifies real… | quay/ | 2.8k | — | ~2.2k | Automated safety check: Pass | Apache-2.0 | today |
| 16 | 16.Spring Boot Spring Boot 3.x development - REST APIs, JPA, Security, Testing, and Cloud-native patterns. | piomin/ | 1.3k | — | ~2k | Automated safety check: Pass | Apache-2.0 | 5 mo ago |
| 17 | Diagnose any Quay Prow job failure end to end: prowjob.json - top-level build log - JUnit - resolved failing step - Playwright results.json when the failing step is Playwright, continuing through… | quay/ | 2.8k | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | today |
| 18 | 18.Code Quality Comprehensive code review for Java - clean code principles, API contracts, null safety, exception handling, and performance. | piomin/ | 1.3k | — | ~2.2k | Automated safety check: Pass | Apache-2.0 | 5 mo ago |
| 19 | Guide for writing modern Java 21 in a Grails and Groovy codebase: records, sealed classes, pattern matching, text blocks and how Java works alongside Groovy. | apache/ | 2.9k | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | today |
| 20 | 20.Shopware CLI Use Shopware CLI for Shopware project, extension, and account workflows — create and install new projects (project create, project dev install), validate projects or extensions (with… | shopware/ | 123 | — | ~4.9k | Automated safety check: Pass | MIT | yesterday |
| 21 | Testing patterns for Vert.x Redis Client: test frameworks, async testing, test locations, container setup, and how to run tests. | vert-x3/ | 142 | — | ~1.6k | Automated safety check: Pass | Apache-2.0 | 19 days ago |
| 22 | Author and maintain versioned Selenium WebDriver tests with Java and JUnit 5. | fugazi/ | 247 | — | ~2.8k | Automated safety check: Pass | MIT | 3 days ago |
| 23 | Bootstrap pitest via the info.solidsoft.pitest Gradle plugin with Kotlin-sane defaults, run mutation tests scoped to changed classes, interpret surviving mutants from mutations.xml, triage… | jvm-skills/ | 140 | — | ~6.7k | Automated safety check: Pass | Apache-2.0 | 1 mo ago |
| 24 | Test-driven development for Spring Boot using JUnit 5, Mockito, MockMvc, Testcontainers, and JaCoCo. | affaan-m/ | 274k | 5 repos | ~947 | Automated safety check: Pass | MIT | 2 days ago |
| 25 | Debug Maven Surefire unit tests by running them in JDWP "wait for debugger" mode (-Dmaven.surefire.debug) and attaching to the forked test JVM using jdb (preferred for CLI/agent debugging)… | eclipse-rdf4j/ | 420 | — | ~2.4k | Automated safety check: Pass | BSD-3-Clause | today |
| 26 | Standards for writing tests in fdb-record-layer. An agent skill from FoundationDB/fdb-record-layer. | FoundationDB/ | 675 | — | ~792 | Automated safety check: Pass | Apache-2.0 | today |
| 27 | Parse a Prow CI job URL or Jira ticket to extract E2E test failure details including test name, spec file, release branch, platform, and error messages | redhat-developer/ | 172 | — | ~2.5k | Automated safety check: Pass | Apache-2.0 | today |
| 28 | Design and implement automated tests for current Minecraft 26.x or legacy 1.21.x mods and plugins using JUnit, MockBukkit, NeoForge Game Tests, or Fabric Game Tests. | Jahrome907/ | 166 | — | ~3.8k | Automated safety check: Pass | MIT | 24 days ago |
| 29 | 29.Eclipse Test Run JUnit tests in Eclipse projects — all tests, by package, by class, or individual test methods. | gradusnikov/ | 171 | — | ~1k | Automated safety check: Pass | MIT | 9 days ago |
| 30 | Builds Spring Boot 3.x services on Java 21 with domain-driven design, WebFlux, JPA tuning and Spring Security using OAuth2 and JWT, verified by Maven or Gradle builds. | Jeffallan/ | 12k | — | ~1.5k | Automated safety check: Pass | MIT | 3 days ago |
| 31 | 使用JUnit 5、Mockito、MockMvc、Testcontainers和JaCoCo进行Spring Boot的测试驱动开发。适用于添加功能、修复错误或重构时。 | affaan-m/ | 274k | 3 repos | ~813 | Automated safety check: Pass | MIT | 2 days ago |
| 32 | 32.Kotest Write a new Kotlin test, or modernize an existing one, using Kotest matchers and idiomatic Kotlin test style — backticked names, apply/assertSoftly blocks, and existing object mothers and helpers. | jvm-skills/ | 140 | — | ~2.6k | Automated safety check: Pass | Apache-2.0 | 1 mo ago |
| 33 | Finds flaky tests in CI logs by aggregating pass rates, explains likely causes and recommends whether to quarantine or fix each one. | Donchitos/ | 26k | — | ~2.6k | Automated safety check: Notes | MIT | 8 days ago |
| 34 | 34.Blue Team A skill your agent uses when the user has concrete failing cases in code or a guardrail/classifier/filter/prompt/API they own — a red-team failure catalogue OR a CI/CD test-failure report (failing… | gaasher/ | 174 | — | ~3.6k | Automated safety check: Pass | MIT | 3 mo ago |
| 35 | 35.Unit Testing Java单元测试编写指南(基于JUnit和Mockito) | Leavesfly/ | 237 | — | ~667 | Automated safety check: Pass | No licence | 1 mo ago |
| 36 | 36.Quarkus TDD Test-driven development for Quarkus 3.x LTS using JUnit 5, Mockito, REST Assured, Camel testing, and JaCoCo. | affaan-m/ | 274k | 1 repo | ~6.4k | Automated safety check: Pass | MIT | 2 days ago |
| 37 | Scaffold, write, debug, and enhance enterprise-grade Playwright E2E tests in Java using Page Object Model, JUnit 5, Allure reporting, and parallel execution. | davila7/ | 32k | 3 repos | ~3.4k | Automated safety check: Pass | MIT | today |
| 38 | 38.Pure Lsp Go Executes Pure code through the running Legend Pure LSP bridge as a fast REPL-style dev loop — compiles everything currently loaded and runs a function literally named go():Any[], instead of writing… | finos/ | 112 | — | ~1.8k | Automated safety check: Pass | Apache-2.0 | today |
| 39 | A skill your agent uses to stand up a JUnit4-based JVM unit-test suite on an Android module. | skydoves/ | 333 | — | ~5.1k | Automated safety check: Pass | Apache-2.0 | 4 mo ago |
| 40 | Generates production-grade JUnit 5 unit and integration tests in Java. | sickn33/ | 47k | 1 repo | ~1.8k | Automated safety check: Pass | MIT | today |
| 41 | 41.TDD Guide Test-driven development skill for writing unit tests, generating test fixtures and mocks, analyzing coverage gaps, and guiding red-green-refactor workflows across Jest, Pytest, JUnit, Vitest, and… | alirezarezvani/ | 28k | — | ~3.4k | Automated safety check: Pass | MIT | 1 mo ago |
| 42 | Installs and runs the kube-bench tool against a Kubernetes cluster as a Job, DaemonSet, or standalone binary, selecting the correct benchmark version and targets (control plane, etcd, kubelet… | mukul975/ | 34k | — | ~2.3k | Automated safety check: Notes | Apache-2.0 | 1 mo ago |
| 43 | 43.Test Quality Write high-quality JUnit 5 tests with AssertJ assertions. An agent skill from decebals/claude-code-java. | decebals/ | 750 | — | ~3.8k | Automated safety check: Pass | MIT | 1 mo ago |
| 44 | Generate Newman CLI commands, configuration files, Jenkins pipeline scripts, and shell automation for running Postman collections in CI/CD or local environments. | sickn33/ | 47k | 1 repo | ~2.1k | Automated safety check: Pass | MIT | today |
| 45 | 45.Quarkus TDD Desarrollo guiado por pruebas para Quarkus 3.x LTS usando JUnit 5, Mockito, REST Assured, pruebas Camel y JaCoCo. | affaan-m/ | 274k | — | ~3.6k | Automated safety check: Pass | MIT | 2 days ago |
| 46 | Desarrollo guiado por pruebas para Spring Boot usando JUnit 5, Mockito, MockMvc, Testcontainers y JaCoCo. | affaan-m/ | 274k | — | ~996 | Automated safety check: Pass | MIT | 2 days ago |
| 47 | 47.Quarkus TDD JUnit 5、Mockito、REST Assured、Camelテスト、JaCoCoを使用したQuarkus 3.xのテスト駆動開発。機能追加、バグ修正、またはイベント駆動サービスのリファクタリング時に使用。 | affaan-m/ | 274k | — | ~5.8k | Automated safety check: Pass | MIT | 2 days ago |
| 48 | A skill your agent uses to launch, drive, and tear down an Activity from an instrumentation test using ActivityScenario and the JUnit4 wrapper ActivityScenarioRule. | skydoves/ | 333 | — | ~4.1k | Automated safety check: Pass | Apache-2.0 | 4 mo ago |
Questions, answered from the data.
What is the best JUnit skill?
Debug E2E Pipeline (official) from kubernetes-sigs/cloud-provider-azure ranks first of the 84 JUnit skills listed here, with the highest score: its repository has 294 GitHub stars, its SKILL.md loads about 3.4k tokens and it passes the automated safety check with no findings. Next come Migrate Groovy To Java and Migrate Junit Source To Tabletest.
Is there an official JUnit skill?
14 of the 84 JUnit skills are official, published by the vendor's own GitHub organization: Debug E2E Pipeline, Migrate Groovy To Java, Migrate Junit Source To Tabletest, Test Analysis Extensions, Spring Boot Testing and 9 more.
How are these skills ranked?
By Skill Navigator score, which combines the GitHub stars of the skill's repository (shared across that repo's skills and discounted for large collections), how many other GitHub owners carry a copy of the skill, and automated SKILL.md quality checks, minus penalties for safety-check warnings and for each further skill from the same repository. Skills that fail the safety check are not listed.