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Achieve 100% test coverage with comprehensive unit tests (#26)
* Initial plan * Initial analysis and test planning Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> * Add comprehensive tests for utils.js and locale.js - achieve 100% coverage Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> * Add comprehensive tests for easy-i18n.js and CLI - achieve 100% code coverage Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> * Add test documentation, coverage scripts, and update README Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> * Add comprehensive coverage summary documentation Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> * Delete package-lock.json --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: xudafeng <1011681+xudafeng@users.noreply.github.com> Co-authored-by: 达峰的夏天 <xudafeng@126.com>
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‎.gitignore‎

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node_modules
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.nyc_output
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coverage
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test/fixtures/output
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*.sw*
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*.un~

‎COVERAGE_SUMMARY.md‎

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# Test Coverage Summary
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## Overview
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This document provides a summary of the comprehensive test coverage achieved for the easy-i18n-cli project.
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## Coverage Metrics
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All source files have achieved **100% code coverage** across all metrics:
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### Overall Coverage
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- **Statements**: 100%
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- **Branches**: 100%
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- **Functions**: 100%
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- **Lines**: 100%
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### File-by-File Breakdown
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#### bin/easy-i18n-cli.js
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| Metric | Coverage |
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|--------|----------|
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| Statements | 100% |
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| Branches | 100% |
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| Functions | 100% |
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| Lines | 100% |
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**Coverage includes:**
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- Version flag handling (`-v`, `--version`)
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- Config file loading (`-c`, `--config`)
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- Check mode execution (`--check`)
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- Default behavior (extraction mode)
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- Error handling
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#### src/easy-i18n.js
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| Metric | Coverage |
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|--------|----------|
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| Statements | 100% |
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| Branches | 100% |
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| Functions | 100% |
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| Lines | 100% |
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**Coverage includes:**
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- Constructor and initialization
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- TypeScript file support
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- Debug and info logging
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- Token extraction with various quote types
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- Custom token names and regex patterns
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- Ignore keys functionality
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- File and directory resolution
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- Key sorting and Chinese character detection
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- Data merging (append mode and non-append mode)
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- Translation filter execution
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- Output file generation
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- Translation validation (check mode)
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- Line offset calculation
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- Complete workflow execution
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#### src/locale.js
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| Metric | Coverage |
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|--------|----------|
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| Statements | 100% |
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| Branches | 100% |
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| Functions | 100% |
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| Lines | 100% |
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**Coverage includes:**
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- Default options handling
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- Chinese/English text switching
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- String interpolation with various key types
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- Multi-scene text handling (e.g., `text#sceneA`)
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- Empty and numeric key handling
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- Undefined value handling
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- Custom output filters
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- Custom transfer filters
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- Translation fallback
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#### src/utils.js
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| Metric | Coverage |
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|--------|----------|
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| Statements | 100% |
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| Branches | 100% |
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| Functions | 100% |
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| Lines | 100% |
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**Coverage includes:**
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- Module loading without cache (`noCacheRequire`)
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- Locale extraction from direct exports
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- Locale extraction from default exports
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- Locale extraction from nested structures
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## Test Statistics
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- **Total Test Suites**: 4
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- **Total Tests**: 61
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- **All Tests Passing**: ✅
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### Test Suite Breakdown
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1. **test/utils.test.js**: 7 tests
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2. **test/locale.test.js**: 14 tests
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3. **test/easy-i18n-cli.test.js**: 34 tests
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4. **test/bin.test.js**: 6 tests
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## Validation
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Coverage is validated through:
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1. Automated test suite (61 passing tests)
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2. nyc coverage reporting
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3. Coverage threshold enforcement (100% required)
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### Running Coverage Validation
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```bash
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# Run tests with coverage
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npm test
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# Generate HTML coverage report
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npm run test:coverage
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# Validate coverage thresholds
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npm run test:check-coverage
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```
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## Continuous Integration
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The test suite is designed for CI/CD integration:
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```yaml
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# Example CI step
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- name: Test and Validate Coverage
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run: |
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npm test
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npm run test:check-coverage
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```
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## Coverage Enforcement
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Coverage thresholds are enforced via nyc configuration in `package.json`:
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```json
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{
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"nyc": {
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"check-coverage": true,
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"lines": 100,
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"statements": 100,
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"functions": 100,
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"branches": 100
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}
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}
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```
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## Maintenance
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To maintain 100% coverage:
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1. Write tests for all new features before implementation (TDD)
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2. Run `npm test` frequently during development
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3. Check coverage reports for any gaps
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4. Ensure all edge cases are tested
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5. Run `npm run test:check-coverage` before committing
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## Documentation
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For detailed testing information, see:
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- [TEST_DOCUMENTATION.md](./TEST_DOCUMENTATION.md) - Complete testing guide
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- [README.md](./README.md) - Quick start and overview
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---
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**Coverage Report Generated**: 2024
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**Tool Version**: nyc (Istanbul)
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**Test Framework**: Mocha

‎README.md‎

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$ ./bin/easy-i18n-cli.js -c ./google-translate.config.js
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```
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## Testing
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This project has comprehensive test coverage with **100% code coverage** across all metrics.
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### Run tests
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```bash
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npm test
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```
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### Run tests with HTML coverage report
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```bash
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npm run test:coverage
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```
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### Check coverage thresholds
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```bash
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npm run test:check-coverage
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```
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For detailed testing documentation, see [TEST_DOCUMENTATION.md](./TEST_DOCUMENTATION.md).
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