How does branch coverage differ from line coverage?

Line coverage measures which lines of code were executed, while branch coverage ensures every decision path (like if/else statements and switch cases) has been tested.

Can it help me find specific security risks?

Yes, the skill automatically categorizes gaps. It flags untested authentication, payment processing, and data validation logic as 'CRITICAL' risks.

Does it identify poor quality tests?

Yes, it identifies 'test smells,' such as tests that run without assertions or tests that don't actually verify behavior, which can give a false sense of security.

How does it help with refactoring?

By identifying coverage gaps before you start, you can add missing tests to ensure you have a safety net, allowing you to refactor with confidence.

Which programming languages does this skill support?

The test-coverage skill currently supports React/TypeScript/JavaScript (Jest/Vitest), Go, Rust (Tarpaulin), and Python (Pytest/coverage.py).

Test Coverage Analyzer

Name: Test Coverage Analyzer
Author: MadAppGang

byMadAppGang

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230

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セキュリティとテスト

Performs on-demand test coverage analysis to identify untested code paths and improve software quality across multiple tech stacks.

The Test Coverage skill provides developers with a comprehensive diagnostic tool for evaluating the health of their test suites. By analyzing line, branch, function, and statement coverage across major ecosystems—including TypeScript, Go, Rust, and Python—it identifies critical gaps in high-risk modules like authentication, payments, and error handling. It goes beyond simple metrics to offer actionable recommendations and detect 'test smells,' ensuring that your codebase remains robust and compliant with coverage targets before deployment or refactoring.

主な機能

01Actionable recommendations for improving test quality and fixing 'test smells'

02Multi-metric analysis including line, branch, function, and statement coverage

03Comprehensive reporting with impact assessments and estimated coverage gains

04230 GitHub stars

05Cross-platform support for React/TS, Go, Rust, and Python testing frameworks

06Automated gap analysis with prioritized risk levels for critical code paths

ユースケース

01Performing technical debt audits when onboarding to legacy codebases

02Identifying untested security and payment logic before a production release

03Maintaining 80%+ coverage compliance requirements in professional development workflows

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add madappgang/claude-code test-coverage

For use in Claude.ai and ChatGPT

Download Skill