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Add test coverage infrastructure with logger tests and comprehensive documentation (#23)
* refactor: extract CLI workflow into cli-workflow.ts and add unit tests Signed-off-by: Jiaxiao (mossaka) Zhou <duibao55328@gmail.com> * Initial plan * Add comprehensive logger tests and coverage infrastructure Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com> * Add comprehensive testing documentation and update README Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com> * Add detailed coverage summary document Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com> * Fix test count inconsistencies in coverage summary Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com> --------- Signed-off-by: Jiaxiao (mossaka) Zhou <duibao55328@gmail.com> Co-authored-by: Jiaxiao (mossaka) Zhou <duibao55328@gmail.com> Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: Mossaka <5447827+Mossaka@users.noreply.github.com>
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‎COVERAGE_SUMMARY.md‎

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# Test Coverage Summary
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## Overall Coverage Statistics
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| Metric | Coverage | Status |
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|------------|----------|--------|
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| Statements | 38.39% | ✅ Pass (threshold: 38%) |
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| Branches | 31.78% | ✅ Pass (threshold: 30%) |
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| Functions | 37.03% | ✅ Pass (threshold: 35%) |
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| Lines | 38.31% | ✅ Pass (threshold: 38%) |
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**Total:** 182 of 474 statements covered
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## File-by-File Coverage
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### ✅ Fully Covered (100%)
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| File | Statements | Branches | Functions | Lines | Tests |
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|------|------------|----------|-----------|-------|-------|
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| `logger.ts` | 100% (16/16) | 100% (6/6) | 100% (8/8) | 100% (16/16) | 33 |
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| `squid-config.ts` | 100% (13/13) | 100% (5/5) | 100% (5/5) | 100% (12/12) | 41 |
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| `cli-workflow.ts` | 100% (16/16) | 100% (2/2) | 100% (1/1) | 100% (16/16) | 2 |
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### ⚠️ Good Coverage (50-80%)
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| File | Statements | Branches | Functions | Lines | Status |
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|------|------------|----------|-----------|-------|--------|
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| `host-iptables.ts` | 83.63% (92/110) | 55.55% (10/18) | 100% (5/5) | 83.63% (92/110) | Good |
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### ❌ Needs Improvement (<50%)
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| File | Statements | Branches | Functions | Lines | Priority |
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|------|------------|----------|-----------|-------|----------|
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| `docker-manager.ts` | 18% (45/250) | 22.22% (18/81) | 4% (1/25) | 17.15% (41/239) | High |
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| `cli.ts` | 0% (0/69) | 0% (0/17) | 0% (0/10) | 0% (0/69) | High |
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## Coverage Improvements in This PR
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### Before
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- Overall statement coverage: **35.86%**
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- Logger coverage: **25%**
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- No coverage infrastructure
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- No coverage thresholds
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- No HTML reports
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### After
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- Overall statement coverage: **38.39%** (↑ 2.53%)
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- Logger coverage: **100%** (↑ 75%)
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- Coverage thresholds enforced
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- Multiple report formats (HTML, LCOV, JSON)
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- Comprehensive testing documentation
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## Test Suite Statistics
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- **Total Test Suites:** 6 passed
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- **Total Tests:** 135 passed
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- **Test Execution Time:** ~4.4 seconds
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### Test Files
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1. `logger.test.ts` - 33 tests (NEW)
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2. `squid-config.test.ts` - 41 tests
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3. `cli-workflow.test.ts` - 2 tests (100% coverage)
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4. `host-iptables.test.ts` - 12 tests
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5. `docker-manager.test.ts` - 23 tests
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6. `cli.test.ts` - 24 tests
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## Coverage Reports
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After running `npm run test:coverage`, reports are available in multiple formats:
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- **HTML Report:** `coverage/index.html` (open in browser)
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- **LCOV Report:** `coverage/lcov.info` (CI/CD integration)
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- **JSON Summary:** `coverage/coverage-summary.json` (programmatic access)
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- **Terminal Output:** Displayed after test run
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## Areas for Future Improvement
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### High Priority
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1. **`cli.ts`** (0% coverage)
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- Entry point testing
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- CLI argument parsing
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- Signal handling
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- Error cases
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2. **`docker-manager.ts`** (18% coverage)
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- Container lifecycle functions
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- Error handling paths
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- Log parsing logic
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- Cleanup operations
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### Medium Priority
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3. **`host-iptables.ts`** (83.63% coverage)
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- Edge cases in remaining 16.37%
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- Error conditions
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- Cleanup scenarios
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## How to View Coverage
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### Terminal
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```bash
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npm run test:coverage
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```
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### HTML Report
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```bash
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npm run test:coverage
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open coverage/index.html # macOS
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xdg-open coverage/index.html # Linux
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```
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### Watch Mode
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```bash
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npm run test:watch
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```
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## Coverage Thresholds
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Configured in `jest.config.js`:
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```javascript
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coverageThreshold: {
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global: {
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branches: 30,
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functions: 35,
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lines: 38,
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statements: 38,
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},
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}
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```
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Tests will **fail** if coverage drops below these thresholds.
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## Integration with CI/CD
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The coverage reports (especially LCOV format) can be integrated with:
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- GitHub Actions (via coverage badges)
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- Codecov
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- Coveralls
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- SonarQube
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- Other CI/CD tools
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Example GitHub Actions workflow:
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```yaml
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- name: Run tests with coverage
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run: npm run test:coverage
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- name: Upload coverage to Codecov
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uses: codecov/codecov-action@v3
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with:
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files: ./coverage/lcov.info
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```
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## Summary
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This PR establishes a solid testing infrastructure for the project with:
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✅ **100% coverage** for 3 core modules (logger, squid-config, cli-workflow)
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✅ **Coverage thresholds** to prevent regression
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✅ **Multiple report formats** for different use cases
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✅ **Comprehensive documentation** (TESTING.md)
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✅ **All tests passing** (135/135)
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The foundation is now in place for continuous improvement of test coverage across the remaining modules.

‎README.md‎

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- Data exfiltration via HTTP/HTTPS
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- MCP servers accessing unexpected endpoints
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## Development & Testing
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### Running Tests
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```bash
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# Install dependencies
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npm install
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# Run all tests
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npm test
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# Run tests with coverage report
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npm run test:coverage
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# Run tests in watch mode
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npm run test:watch
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```
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### Test Coverage
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The project maintains comprehensive test coverage. Current coverage status:
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- **Logger**: 100% coverage
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- **Squid Config**: 100% coverage
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- **CLI Workflow**: 100% coverage
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- **Overall**: 38%+ statement coverage with established thresholds
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For detailed testing information, see [TESTING.md](TESTING.md).
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### Building
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```bash
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# Build TypeScript
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npm run build
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# Run linter
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npm run lint
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# Clean build artifacts
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npm run clean
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```
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## Contributing
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Contributions welcome! Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.

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