How does it help identify missing tests?

It includes a dedicated coverage analysis workflow that parses LCOV or JSON reports to identify specific uncovered lines and files with critical coverage gaps.

What is the default coverage threshold enforced by this skill?

The skill enforces a minimum coverage threshold of 80% across branches, functions, lines, and statements to ensure code reliability.

Can this skill help with testing web components?

Yes, it includes specific patterns and mocking strategies for Lit components and DOM-based testing using the jsdom environment.

Does it support external framework mocking?

Yes, it provides standard configurations for mocking external dependencies such as DevUI, Lit, and other ES-module-based frameworks.

What is the primary testing pattern recommended?

The skill promotes the AAA (Arrange-Act-Assert) pattern to ensure tests are isolated, readable, and focused on single responsibilities.

CUI JavaScript Unit Testing

Name: CUI JavaScript Unit Testing
Author: cuioss

bycuioss

0•

Security & Testing

Enforces standardized Jest unit testing patterns and coverage requirements for reliable JavaScript development.

This skill provides a comprehensive framework for Jest unit testing within the CUI ecosystem, ensuring consistent test organization, robust mocking strategies, and strict adherence to coverage thresholds. It guides developers through complex testing scenarios—such as mocking Lit components and managing DOM environments—while offering automated workflows to analyze coverage reports and identify critical testing gaps. By implementing the AAA (Arrange-Act-Assert) pattern and standardized file structures, it ensures that your test suite remains maintainable, predictable, and high-quality.

Key Features

01Automated coverage analysis with 80% threshold enforcement

02Standardized test file organization and naming conventions

03Enforcement of AAA (Arrange-Act-Assert) testing patterns

040 GitHub stars

05Automated Jest configuration and module mapping for ES modules

06Comprehensive mocking strategies for Lit and DevUI frameworks

Use Cases

01Identifying and remediating low-coverage areas in existing codebases

02Configuring a new JavaScript project with production-ready Jest settings

03Implementing complex mocks for web components and external dependencies

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add cuioss/plan-marshall cui-javascript-unit-testing

For use in Claude.ai and ChatGPT

Download Skill