Web Testing

Web Testing Skill

Comprehensive web testing: unit, integration, E2E, load, security, visual regression, accessibility.

Quick Start

npx vitest run                    # Unit tests
npx playwright test               # E2E tests
npx playwright test --ui          # E2E with UI
k6 run load-test.js               # Load tests
npx @axe-core/cli https://example.com  # Accessibility
npx lighthouse https://example.com     # Performance

Testing Pyramid (70-20-10)

| Layer | Ratio | Framework | Speed |

|-------|-------|-----------|-------|

| Unit | 70% | Vitest/Jest | <50ms |

| Integration | 20% | Vitest + fixtures | 100-500ms |

| E2E | 10% | Playwright | 5-30s |

When to Use

• Unit: Functions, utilities, state logic
• Integration: API endpoints, database ops, modules
• E2E: Critical flows (login, checkout, payment)
• Load: Pre-release performance validation
• Security: Pre-deploy vulnerability scanning
• Visual: UI regression detection

Reference Documentation

Core Testing

• ./references/unit-integration-testing.md - Unit/integration patterns
• ./references/e2e-testing-playwright.md - Playwright E2E workflows
• ./references/component-testing.md - React/Vue/Angular component testing
• ./references/testing-pyramid-strategy.md - Test ratios, priority matrix

Cross-Browser & Mobile

• ./references/cross-browser-checklist.md - Browser/device matrix
• ./references/mobile-gesture-testing.md - Touch, swipe, orientation
• ./references/shadow-dom-testing.md - Web components testing

Interactive & Forms

• ./references/interactive-testing-patterns.md - Forms, keyboard, drag-drop
• ./references/functional-testing-checklist.md - Feature testing

Performance & Quality

• ./references/performance-core-web-vitals.md - LCP/CLS/INP, Lighthouse CI
• ./references/visual-regression.md - Screenshot comparison
• ./references/test-flakiness-mitigation.md - Stability strategies

Accessibility

• ./references/accessibility-testing.md - WCAG checklist, axe-core

Security

• ./references/security-testing-overview.md - OWASP Top 10, tools
• ./references/security-checklists.md - Auth, API, headers
• ./references/vulnerability-payloads.md - SQL/XSS/CSRF payloads

API & Load

• ./references/api-testing.md - API test patterns
• ./references/load-testing-k6.md - k6 load test patterns

Checklists

• ./references/pre-release-checklist.md - Complete release checklist

CI/CD Integration

jobs:
  test:
    steps:
      - run: npm run test:unit      # Gate 1: Fast fail
      - run: npm run test:e2e       # Gate 2: After unit pass
      - run: npm run test:a11y      # Accessibility
      - run: npx lhci autorun       # Performance