chunk-testing-gaps

Official

Find surviving test gaps with mutation testing

AuthorCircleCI-Public
Version1.0.0
Installs0

System Documentation

What problem does it solve?

It identifies where your test suite fails to detect realistic bugs by finding code mutations that still pass all validations, exposing gaps in coverage before they reach CI.

Core Features & Use Cases

  • Mutation gap discovery: Proposes security-, control-flow-, and validation-focused mutants across the codebase and numbers them for traceability.
  • Local + CI validation workflow: Kills mutants using static analysis and targeted tests, then confirms survivors via pushed worktree branches and CI results.
  • Production risk cross-reference: Attempts to map surviving mutants to real traffic using observability signals and then ranks outcomes by risk.

Quick Start

Ask the assistant to run chunk-testing-gaps on your current cloned repository to discover, validate, and risk-rank surviving mutants that indicate testing gaps.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: chunk-testing-gaps
Download link: https://github.com/CircleCI-Public/chunk-cli/archive/main.zip#chunk-testing-gaps

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
View Source Repository

Agent Skills Search Helper

Install a tiny helper to your Agent, search and equip skill from 471,000+ vetted skills library on demand.