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Testing Strategy - Coditect v5

Overview​

This document outlines the comprehensive testing strategy for Coditect v5, a multi-llm browser-based IDE built on Eclipse theia.

Testing Pyramid​

1. Unit Tests (70% of tests)​

Purpose: Test individual functions, components, and modules in isolation.

Frontend (Vitest + React Testing Library):

  • React component testing
  • Store (Zustand) testing
  • Service function testing
  • Hook testing
  • Utility function testing

Backend (Rust + cargo test):

  • Handler function testing
  • Database model testing
  • Authentication logic testing
  • Business logic testing
  • Utility function testing

Coverage Target: 80%+

2. Integration Tests (20% of tests)​

Purpose: Test how different parts of the system work together.

API Integration:

  • Backend API endpoint testing
  • Database interaction testing
  • Authentication flow testing
  • Session management testing

Frontend Integration:

  • Component interaction testing
  • Store integration testing
  • API client testing
  • Route testing

Coverage Target: 70%+

3. End-to-End Tests (10% of tests)​

Purpose: Test complete user workflows and system behavior.

User Workflows:

  • User registration and login
  • Session creation and management
  • AI conversation flows
  • File management operations
  • Multi-llm interactions

Tools: Playwright (planned for Sprint 4) Coverage Target: Key user journeys

Test Types by Component​

Authentication System​

  • ✅ Unit tests for auth handlers (Rust)
  • ✅ Unit tests for auth store (Frontend)
  • ✅ JWT token creation/validation
  • ✅ Password hashing verification
  • 🔄 API integration tests
  • 🔄 E2E login/logout flows

Session Management​

  • ✅ Unit tests for session service
  • ✅ Session CRUD operations
  • 🔄 Multi-session isolation testing
  • 🔄 Session persistence testing

llm Integration​

  • 🔄 llm service unit tests
  • 🔄 Model selector component tests
  • 🔄 Multi-llm switching tests
  • 🔄 LM Studio integration tests

File System Operations​

  • 🔄 File service unit tests
  • 🔄 OPFS caching tests
  • 🔄 FoundationDB persistence tests
  • 🔄 File upload/download tests

theia Integration​

  • 🔄 theia extension tests
  • 🔄 Monaco editor integration
  • 🔄 terminal widget tests
  • 🔄 File explorer tests

Testing Infrastructure​

CI/CD Pipeline (GitHub Actions)​

on: [push, pull_request]
jobs:
  - backend-tests
  - frontend-tests
  - security-scan
  - test-coverage
  - deployment-validation

Test Scripts​

  • npm test - Run frontend unit tests
  • npm run test:watch - Watch mode for development
  • npm run test:coverage - Generate coverage reports
  • ./scripts/test-runner.sh - Comprehensive test suite
  • backend/tests/api/test-api.sh - API integration tests

Test Configuration​

  • Vitest: Frontend test runner with JSX/TSX support
  • React Testing Library: Component testing utilities
  • cargo test: Rust unit and integration tests
  • GitHub Actions: Automated CI/CD testing

Test Data Management​

Mock Data​

  • User fixtures in src/test/utils.tsx
  • Session mock data factories
  • Conversation and message mocks
  • API response mocks

Test Databases​

  • In-memory database for unit tests
  • Docker containers for integration tests
  • Isolated test tenants for FDB tests

External Service Mocking​

  • LM Studio API mocking
  • FoundationDB test clusters
  • File system operation mocks

Performance Testing​

Load Testing (Planned Sprint 3)​

  • API endpoint performance
  • Database query optimization
  • Concurrent user sessions
  • Memory usage profiling

Tools​

  • k6 for API load testing
  • Browser performance monitoring
  • Rust profiling tools

Security Testing​

Static Analysis​

  • ✅ Rust Clippy for code quality
  • ✅ ESLint for JavaScript/TypeScript
  • ✅ cargo audit for dependency vulnerabilities
  • ✅ npm audit for Node.js vulnerabilities

Runtime Security (Planned Sprint 2)​

  • Input validation testing
  • SQL injection prevention
  • XSS protection testing
  • Authentication bypass attempts
  • CSRF protection verification

Accessibility Testing​

Automated Testing​

  • axe-core integration with testing-library
  • ARIA attribute validation
  • Keyboard navigation testing
  • Screen reader compatibility

Manual Testing​

  • Tab order verification
  • High contrast mode testing
  • Voice control compatibility

Browser Compatibility​

Target Browsers​

  • Chrome 90+ (Primary)
  • Firefox 88+
  • Safari 14+
  • Edge 90+

Testing Strategy​

  • Automated cross-browser testing
  • WebAssembly compatibility testing
  • IndexedDB/OPFS support verification

Test Environment Management​

Local Development​

# Start all services
npm run dev

# Run tests in watch mode
npm run test:watch

# Run full test suite
./scripts/test-runner.sh

CI Environment​

  • Automated dependency installation
  • FoundationDB Docker containers
  • Test result aggregation
  • Coverage reporting

Staging Environment​

  • Production-like configuration
  • Full integration testing
  • Performance benchmarking
  • User acceptance testing

Coverage Requirements​

Minimum Coverage Thresholds​

  • Statements: 70%
  • Branches: 70%
  • Functions: 70%
  • Lines: 70%

Critical Path Coverage​

  • Authentication: 90%+
  • Session management: 85%+
  • Data persistence: 85%+
  • Security functions: 95%+

Test Maintenance​

Regular Tasks​

  • Update test fixtures monthly
  • Review and update mock data
  • Validate external service mocks
  • Clean up obsolete tests

Performance Monitoring​

  • Track test execution times
  • Identify slow/flaky tests
  • Optimize test suite performance
  • Monitor coverage trends

Testing Best Practices​

Writing Tests​

  1. Arrange-Act-Assert pattern
  2. Descriptive test names that explain the scenario
  3. Independent tests that don't rely on test order
  4. Proper cleanup after each test
  5. Mock external dependencies appropriately

Test Organization​

  1. Co-locate tests with source code
  2. Group related tests in describe blocks
  3. Use consistent naming conventions
  4. Separate unit/integration/e2e tests clearly

Debugging Tests​

  1. Use proper error messages in assertions
  2. Log relevant data when tests fail
  3. Use test.only for debugging specific tests
  4. Debug mode for step-by-step execution

Metrics and Reporting​

Test Metrics​

  • Test execution time
  • Test pass/fail rates
  • Coverage percentages
  • Flaky test identification

Reporting​

  • GitHub Actions test results
  • Coverage reports (HTML)
  • Performance benchmarks
  • Security scan results

Future Enhancements​

Sprint 2 (Security Focus)​

  • OWASP ZAP integration
  • Penetration testing automation
  • Vulnerability scanning
  • Security compliance testing

Sprint 3 (Performance Focus)​

  • Load testing with k6
  • Memory leak detection
  • Performance regression testing
  • Database optimization testing

Sprint 4 (E2E Focus)​

  • Playwright test suite
  • Visual regression testing
  • User journey automation
  • Cross-browser E2E testing

Sprint 5 (Advanced Testing)​

  • Chaos engineering tests
  • Agent behavior testing
  • Multi-llm workflow testing
  • Production monitoring integration

Resources​

Documentation​

Tools​

Last Updated: $(date) Next Review: Monthly Owner: Development Team