Can this skill help with existing codebases?

Yes, it includes coverage analysis patterns that help Claude identify untested areas in existing code and generate the necessary tests to meet standards.

What is the AAA pattern enforced by this skill?

AAA stands for Arrange, Act, and Assert. It is a pattern that organizes test methods into three distinct sections to improve clarity and maintainability.

What are the default coverage requirements?

The skill sets a standard of 80% for both line and branch coverage, with 100% coverage recommended for critical code paths.

What testing framework does this skill support?

This skill is specifically designed for JUnit 5 (JUnit Jupiter) and modern Java testing practices.

Does this handle integration testing?

This skill focuses on core unit testing. For integration testing, it is designed to work alongside the junit-integration skill.

JUnit Core Testing

Name: JUnit Core Testing
Author: cuioss

bycuioss

0•

安全与测试

Standardizes Java unit testing using JUnit 5 with the Arrange-Act-Assert (AAA) pattern and strict coverage requirements.

The JUnit Core skill provides Claude Code with a comprehensive framework for writing high-quality Java unit tests using the JUnit 5 (Jupiter) ecosystem. It enforces industry-standard best practices, including the Arrange-Act-Assert (AAA) pattern for readable test logic, a strict 1:1 mapping between production and test classes, and descriptive naming conventions through the @DisplayName annotation. By integrating coverage analysis standards, this skill helps developers maintain a minimum of 80% line and branch coverage, ensuring that critical paths and public APIs remain robust and reliable.

主要功能

01Enforces the Arrange-Act-Assert (AAA) structural pattern

02Defines 80% minimum line and branch coverage standards

030 GitHub stars

04Ensures 1:1 mapping between production and test classes

05Provides patterns for systematic coverage analysis and improvement

06Standardizes JUnit 5 @DisplayName and naming conventions

使用场景

01Generating unit tests for new Java classes with consistent structure

02Refactoring legacy Java test suites to modern JUnit 5 standards

03Identifying and closing gaps in test coverage for critical code paths

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add cuioss/plan-marshall junit-core

For use in Claude.ai and ChatGPT

Download Skill