Add comprehensive UI and unit test coverage to Optimax Prime Calendar

[Copilot]

Overview

This PR adds a complete testing infrastructure to the Optimax Prime Calendar application, including both unit tests and end-to-end (E2E) tests to ensure code quality and prevent regressions.

Changes Made

Testing Infrastructure

• Vitest: Added as the primary unit testing framework (Vite-native, fast execution)
• React Testing Library: For component testing with best practices
• Playwright: For end-to-end browser testing
• jsdom: For DOM simulation in unit tests

Unit Tests (8 tests - All Passing ✅)

Created comprehensive unit tests in src/App.test.tsx:

App Component Tests:

• ✓ Renders the application title "Optimax Prime Breakfast"
• ✓ Renders the online meeting link with correct href and target attributes
• ✓ Renders the Ant Design calendar component
• ✓ Renders the avatar image

cellRender Function Tests:

• ✓ Returns null for dates not in the schedule
• ✓ Renders "IT Evening" with online tag for scheduled dates
• ✓ Renders both online and offline tags when applicable
• ✓ Applies correct colors (green for online, gold for offline)

E2E Tests (8 scenarios)

Created comprehensive E2E tests in e2e/app.spec.ts that verify:

• Page title and branding display correctly
• Online meeting link functionality
• Calendar navigation and month switching
• Scheduled events appear on correct dates
• Overall page structure and layout

Configuration

• vitest.config.ts - Vitest configuration with jsdom environment
• playwright.config.ts - Playwright E2E test configuration with auto-build
• src/test/setup.ts - Test setup with jest-dom matchers
• Updated tsconfig.app.json with test-related TypeScript types

NPM Scripts

Added the following test commands to package.json:

npm test              # Run unit tests
npm run test:ui       # Run tests with interactive UI
npm run test:coverage # Run tests with coverage report
npm run test:e2e      # Run E2E tests
npm run test:e2e:ui   # Run E2E tests with interactive UI

Documentation

• TESTING.md: Comprehensive testing guide with examples and best practices
• README.md: Updated with testing section and available test commands

Code Changes

• Exported cellRender function from App.tsx for testing purposes (with appropriate ESLint comment)
• Updated .gitignore to exclude test artifacts (test-results, playwright-report, coverage)

Testing Results

✓ src/App.test.tsx (8 tests) 623ms
  ✓ App > renders the app title  303ms

Test Files  1 passed (1)
     Tests  8 passed (8)

All tests pass successfully, and the build completes without errors.

Benefits

• 🛡️ Code Quality: Ensures components render correctly and business logic works as expected
• 🔄 Regression Prevention: Catches breaking changes early
• 📚 Documentation: Tests serve as living documentation of expected behavior
• 🚀 Confidence: Enables safe refactoring and feature additions
• ✅ CI/CD Ready: Tests can be integrated into continuous integration pipelines

Future Enhancements

• Add test coverage reporting to CI/CD pipeline
• Expand E2E tests to cover more user interactions
• Add visual regression testing for UI changes

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Please cover this project with UI and unit tests

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