Analyze Jest, Vitest, or pytest suites for coverage gaps and quality issues.
npx skills add https://github.com/JansenAnalytics/claudex --skill test-critic
Please help me install this Agent Skill. Skill: test-critic Source: https://github.com/JansenAnalytics/claudex/tree/main/skills/test-critic Command: npx skills add https://github.com/JansenAnalytics/claudex --skill test-critic
Evaluates test quality — coverage analysis, mutation testing (do tests actually catch bugs?), test gap detection, and test code quality scoring. Supports Jest, Vitest, pytest. Use after writing tests to verify they're meaningful.
Run test-critic on a project to generate a full health report including coverage, gaps, quality, and mutation results.
High-intent search queries and answers about installing and using this skill.
Mutation testing evaluates test effectiveness by modifying code to see if tests fail, measuring whether your suite catches real bugs rather than just hitting lines. Test-critic applies this alongside coverage and gap detection to identify weak spots and missing scenarios.
Coverage gap detection analyzes your Vitest project to reveal untested files and weak spots. Test-critic runs a modular pipeline that outputs structured JSON and Markdown reports, guiding improvements to close gaps and elevate test suite health.
Yes, test code quality scoring evaluates naming, mocks, and snapshot usage for pytest projects. Test-critic provides actionable quality metrics with guidance to improve reliability across JavaScript, TypeScript, and Python.
Yes, it supports Jest, Vitest, and pytest across JavaScript, TypeScript, and Python. The tool applies coverage analysis, gap detection, quality checks, and optional mutation testing uniformly to generate a full health report.
High coverage only measures executed lines, not whether assertions catch failures. Mutation testing and gap detection assess effectiveness by injecting faults and identifying missing scenarios, revealing untested logic paths that coverage percentages overlook.
rube-deDetect test frameworks, run suites with coverage, and report findings as a GitHub issue.
CrazyDubyaParse coverage reports to identify uncovered lines and generate test-case suggestions.
robotijnParse cross-format coverage reports to enforce branch and diff thresholds and gate merges.
rudironsoniAnalyze .NET test quality using Coverlet, ReportGenerator, and Stryker.NET.
