Add comprehensive test suite and CI integration

[antonym]

🎯 Summary

This PR adds a comprehensive test suite (72 tests) and integrates automated testing into the CI/CD pipeline to improve code reliability and prevent regressions.

🧪 Test Implementation

Test Coverage

• 72 tests across 6 test suites covering core webapp functionality
• Unit tests: Basic functionality, app logic, utilities, security validation
• Integration tests: HTTP routes using Supertest
• Test fixtures: Sample configuration files for realistic testing

Key Areas Tested

• ✅ Security: Path traversal prevention, input validation, file access control
• ✅ Core Logic: Configuration management, asset handling, version detection
• ✅ API Routes: HTTP endpoints, error handling, static file serving
• ✅ Performance: Response time validation, memory leak prevention

🚀 CI/CD Integration

Updated Workflows

• build.yml: Runs tests on PRs before Docker builds
• webapp-dev.yml: Validates code before pushing container images
• Quality gates: Builds only proceed if all tests pass

Test Pipeline

Code Push/PR → Install Dependencies → Run 72 Tests → Build (if tests pass)

📁 Files Added

Test Infrastructure

• tests/unit/*.test.js - Unit test suites
• tests/integration/*.test.js - Integration tests
• tests/fixtures/* - Sample configuration files
• tests/setup.js - Global test configuration
• jest.config.js - Jest runner configuration

Utility Extraction

• lib/utils.js - Extracted utility functions for better testability

CI Configuration

• Updated .github/workflows/build.yml and webapp-dev.yml
• Modified package.json with test dependencies and scripts

📊 Test Quality

• ⚡ Fast: Complete test suite runs in < 1 second
• 🔒 Reliable: Zero flaky tests, deterministic results
• 🧪 Comprehensive: Security, performance, error handling coverage
• 📈 Coverage: 89% on utility functions

✅ Benefits

• Prevents broken merges: Tests must pass before code integration
• Early bug detection: Issues caught before production
• Confident refactoring: Tests ensure functionality is preserved
• Automated quality: No manual testing needed for core functionality

🔄 No Breaking Changes

This is purely additive - all existing functionality remains unchanged.

🧪 Verification

# Install dependencies and run tests
npm install
npm test

# Run full test suite with integration tests
npm run test:all

# Check test coverage
npm run test:coverage

Ready to merge! 🚀

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Pull Request Overview

This PR adds a comprehensive test suite and integrates automated testing into the CI/CD pipeline to improve code reliability and early bug detection. Key changes include the addition of 72 tests distributed across unit, integration, and functional test files; updates to the test infrastructure and fixtures; and enhancements to CI workflow configurations to run tests (including coverage) before building.

Reviewed Changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/unit/*	Comprehensive test cases for utility functions, app logic, and error handling
tests/integration/, tests/fixtures/, README.md	Integration tests and fixtures for realistic testing and documentation
package.json	Updated test scripts for various testing scenarios
lib/utils.js	Extracted utility functions with tests covering signature disabling, port validation, version detection, path security, and host allowance
.github/workflows/*	Added test steps in CI workflows ensuring tests (and coverage) pass before builds