Frontend Testing

This gets you set up with Jest, Vitest, React Testing Library, and Cypress for comprehensive frontend testing. It covers unit tests for components, integration tests for user flows, and E2E tests for critical paths. The reference guides include specific patterns for both React and Vue ecosystems, plus coverage configuration so you can track what's actually tested. Honestly, the best part is having all the boilerplate and best practices in one place instead of piecing together testing setups from five different blog posts. If you're building any serious frontend work or doing TDD, this saves you the usual setup headache and gets you writing actual tests faster.

skills.sh installs: 514
GitHub stars: 379
last updated: Aug 21, 2026

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Install

$ npx -y skills add aj-geddes/useful-ai-prompts --skill frontend-testing --agent claude-code

Installs into .claude/skills of the current project.

Files

Overview

Build comprehensive test suites for frontend applications including unit tests, integration tests, and end-to-end tests with proper coverage and assertions.

When to Use

Component testing
Integration testing
End-to-end testing
Regression prevention
Quality assurance
Test-driven development

Quick Start

Minimal working example:

// Button.test.tsx
import { render, screen, fireEvent } from '@testing-library/react';
import '@testing-library/jest-dom';
import { Button } from './Button';

describe('Button Component', () => {
  it('renders button with text', () => {
    render(<Button>Click me</Button>);
    expect(screen.getByRole('button')).toHaveTextContent('Click me');
  });

  it('calls onClick handler when clicked', () => {
    const handleClick = jest.fn();
    render(<Button onClick={handleClick}>Click</Button>);

    fireEvent.click(screen.getByRole('button'));
    expect(handleClick).toHaveBeenCalledTimes(1);
  });

SKILL.md on GitHub