Can it help me reach 100% code coverage?

Yes, it analyzes line, branch, and function coverage to identify untested paths and writes targeted tests to fill those gaps.

Which testing frameworks does Component Tester support?

It is optimized for Vitest and React Testing Library, utilizing modern tools like user-event for interactions and MSW for API mocking.

How does it handle complex component interactions?

It uses the Arrange-Act-Assert pattern and realistic user event simulations to test clicks, typing, and focus transitions just as a user would.

Does this skill support accessibility testing?

Absolutely. It integrates axe-core for automated a11y checks and specifically tests for keyboard navigation and ARIA compliance.

Component Tester

Name: Component Tester
Author: deve1993

bydeve1993

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Security & Testing

Writes, executes, and analyzes robust UI component tests using Vitest and React Testing Library with a focus on accessibility and coverage.

About

The Component Tester skill transforms Claude into an expert quality assurance engineer for modern frontend development. It specializes in creating comprehensive test suites for React components, utilizing Vitest for speed and React Testing Library for user-centric validation. Beyond basic rendering, the skill handles complex scenarios like async data fetching with MSW, realistic user interactions, and deep accessibility audits via axe-core. It is particularly useful for developers looking to maintain high-quality component libraries, ensure WCAG compliance, and achieve rigorous code coverage targets through automated analysis.

Key Features

1 GitHub stars
Comprehensive coverage analysis for lines, branches, and functions
Expert-level Vitest and React Testing Library integration
Simulated user interactions including keyboard and focus management
Automated accessibility (a11y) validation and ARIA auditing
API mocking and async state management using MSW

Use Cases

Generating detailed coverage reports to identify untested code paths
Identifying and fixing edge cases in complex, stateful React components
Building and maintaining a resilient, accessible UI component library

About

Key Features

1 GitHub stars
Comprehensive coverage analysis for lines, branches, and functions
Expert-level Vitest and React Testing Library integration
Simulated user interactions including keyboard and focus management
Automated accessibility (a11y) validation and ARIA auditing
API mocking and async state management using MSW

Use Cases

Generating detailed coverage reports to identify untested code paths
Identifying and fixing edge cases in complex, stateful React components
Building and maintaining a resilient, accessible UI component library