What types of tests can this skill generate?

The skill can generate unit tests for isolated functions, integration tests for API endpoints, and E2E tests for critical user flows.

Does it handle edge cases like null or undefined values?

Yes, the skill specifically focuses on boundary conditions, null/undefined checks, and error handling scenarios beyond just the happy path.

How does this skill determine what tests to write?

It analyzes coverage-summary.json reports to identify files below an 80% threshold and scans the source code to find specific untested logic and branches.

Does it support different package managers?

Yes, it is designed to work with both npm and pnpm commands to run tests and generate coverage reports.

Will I see the results of the coverage improvement?

Yes, the skill provides a before and after comparison of coverage metrics to verify the impact of the newly generated tests.

Automated Test Coverage Optimizer

Name: Automated Test Coverage Optimizer
Author: Eotel

byEotel

0•

Security & Testing

Analyzes codebase test coverage reports to automatically generate missing unit, integration, and end-to-end tests.

This skill empowers developers to maintain high-quality codebases by identifying gaps in test coverage and automatically drafting tests for missing paths. It scans coverage reports, targets files below a defined 80% threshold, and generates comprehensive tests covering happy paths, error handling, and complex edge cases. By streamlining the testing workflow within Claude Code, it ensures critical business logic is protected and significantly reduces the manual effort required to achieve and maintain robust test suites.

Key Features

01Identification of untested code paths and branches

020 GitHub stars

03Generation of unit, integration, and E2E tests

04Comparative coverage metrics reporting (before vs. after)

05Automated coverage report analysis for npm and pnpm

06Validation of newly generated test suites to ensure they pass

Use Cases

01Ensuring full error handling coverage for critical API endpoints

02Generating edge-case tests for complex utility functions

03Boosting legacy project coverage to meet 80%+ thresholds

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add eotel/claude-marketplace test-coverage

For use in Claude.ai and ChatGPT

Download Skill