Lokalise MCP Server

# Test Coverage Roadmap ## Executive Summary This roadmap outlines the strategy to increase test coverage for the lokalise-mcp project from the current **17.93%** to **90%+** through systematic implementation of comprehensive test suites across all domains and layers. ## Current State Analysis ### Coverage Metrics (As of 2025-08-24) - **Overall Coverage**: 17.93% - **Statements**: 17.93% - **Branches**: 18.7% - **Functions**: 16.26% - **Lines**: 17.83% ### Domain Coverage Status | Domain | Current Coverage | Test Files | Priority | |--------|-----------------|------------|----------| | Projects | 0% | 0 | HIGH | | Languages | 0% | 0 | HIGH | | Keys | 41.43% | 1 (formatter only) | HIGH | | Tasks | 0% | 0 | MEDIUM | | Comments | 0% | 0 | MEDIUM | | Translations | 0% | 0 | HIGH | | Contributors | 0% | 0 | MEDIUM | | Glossary | 0% | 0 | LOW | ### Existing Test Infrastructure - **Framework**: Vitest with TypeScript support - **Test Files**: 6 total (3 formatters, 3 utils) - **Configuration**: Basic Vitest setup with coverage reporting - **Patterns**: Formatter tests established, fixture patterns in place ## Target State ### Coverage Goals - **Overall Target**: 90%+ - **Service Layer**: 95% (critical API interactions) - **Controller Layer**: 90% (business logic) - **Tool Layer**: 85% (MCP integration) - **Resource Layer**: 85% (MCP resources) - **CLI Layer**: 80% (command interfaces) ### Quality Metrics - All critical paths tested - 100% error scenario coverage - Performance benchmarks established - CI/CD pipeline < 15 minutes - Zero flaky tests ## Implementation Phases ### Phase 1: Foundation (Week 1) **Objective**: Establish testing infrastructure and patterns #### Tasks: 1. **Enhanced Vitest Configuration** - Enable parallel execution with workers - Configure coverage thresholds - Set up test sharding for CI/CD - Implement test caching 2. **Mock System Architecture** - Create Lokalise API mock factory - Implement domain-specific mock builders - Set up fixture management system - Create error simulation utilities 3. **Test Scaffolding Tool** - Build `npm run scaffold:tests` command - Create test generation templates - Implement domain test generators - Set up fixture generators **Deliverables**: - vitest.config.enhanced.ts - src/test-utils/mock-factory.ts - src/test-utils/fixtures/ - scripts/scaffold-tests.ts ### Phase 2: Service Layer Testing (Week 2) **Objective**: Complete service layer test coverage (95% target) #### Priority Domains: 1. **Projects Service** (6 operations) - List, Get, Create, Update, Delete, Empty - Pagination and filtering tests - Error handling scenarios 2. **Keys Service** (7 operations) - CRUD operations with translations - Bulk operations testing - Cursor pagination 3. **Languages Service** (6 operations) - System and project languages - Language management operations **Test Pattern**: ```typescript describe('ProjectsService', () => { let service: ProjectsService; let mockApi: vi.Mocked<LokaliseApi>; beforeEach(() => { mockApi = createMockLokaliseApi(); service = new ProjectsService(mockApi); }); describe('listProjects', () => { it('should fetch projects with pagination'); it('should handle API errors'); it('should validate parameters'); }); }); ``` ### Phase 3: Controller Testing (Week 3) **Objective**: Implement controller layer tests (90% target) #### Focus Areas: - Input validation with Zod schemas - Business logic orchestration - Error transformation and handling - Response formatting integration - Logging context validation **Test Structure**: - Mock service dependencies - Test error mapping - Validate response formatting - Test business rules ### Phase 4: MCP Integration Testing (Week 4) **Objective**: Complete tool and resource testing (85% target) #### Components: 1. **MCP Tools** (39 total) - Tool registration testing - Schema validation - Error propagation - Response formatting 2. **MCP Resources** (16 total) - Resource URI parsing - Query parameter handling - Response generation 3. **CLI Commands** - Command registration - Argument parsing - Output formatting ### Phase 5: Advanced Testing (Week 5) **Objective**: Performance and integration testing #### Test Types: 1. **Performance Tests** - Bulk operations (1000+ items) - Pagination performance - Memory usage validation - Concurrent request handling 2. **Integration Tests** - End-to-end workflows - Cross-domain operations - Rate limiting compliance - Error recovery 3. **Chaos Testing** - Network failure simulation - API timeout handling - Partial failure scenarios ### Phase 6: Optimization & Documentation (Week 6) **Objective**: Finalize and optimize test suite #### Activities: 1. **Test Suite Optimization** - Parallel execution tuning - Test performance improvements - Flaky test elimination - Coverage gap analysis 2. **CI/CD Integration** - Pipeline optimization - Test result reporting - Coverage tracking - Performance monitoring 3. **Documentation** - Test strategy documentation - Maintenance guidelines - Troubleshooting guide - Best practices ## Success Metrics ### Coverage Targets by Week | Week | Overall Coverage | New Test Files | Tests Written | |------|-----------------|----------------|---------------| | 1 | 20% | 5 | 50 | | 2 | 40% | 24 | 240 | | 3 | 60% | 24 | 240 | | 4 | 75% | 39 | 390 | | 5 | 85% | 20 | 200 | | 6 | 90%+ | 8 | 80 | ### Key Performance Indicators - **Test Execution Time**: < 5 minutes local, < 15 minutes CI/CD - **Test Reliability**: 0% flaky tests - **Coverage Growth**: +12% per week average - **Code Quality**: All tests follow established patterns - **Documentation**: 100% of patterns documented ## Risk Mitigation ### Identified Risks 1. **Complexity of Mocking Lokalise API** - Mitigation: Use SDK test patterns as reference - Create comprehensive mock factories 2. **Test Execution Time** - Mitigation: Implement parallel execution - Use test sharding in CI/CD 3. **Maintaining Test Quality** - Mitigation: Enforce test standards - Regular test review process 4. **Coverage Gaps** - Mitigation: Continuous monitoring - Weekly coverage reviews ## Agent Coordination ### Task Distribution - **api-tester**: API endpoint validation and contract testing - **test-writer-fixer**: Test implementation and fixing - **workflow-optimizer**: CI/CD and performance optimization - **documentation-specialist**: Test documentation maintenance ### Communication Protocol 1. Daily progress updates in AGENT_TASK_ASSIGNMENTS.md 2. Blocker escalation via TODO system 3. Weekly coverage reports 4. Continuous integration feedback ## Verification Checklist ### Weekly Checkpoints - [ ] Coverage targets met - [ ] All tests passing - [ ] No regression in existing tests - [ ] Documentation updated - [ ] CI/CD pipeline green ### Final Validation - [ ] 90%+ overall coverage achieved - [ ] All domains have >85% coverage - [ ] Performance benchmarks met - [ ] Zero flaky tests - [ ] Complete documentation ## Next Steps 1. Review and approve this roadmap 2. Begin Phase 1 implementation 3. Set up weekly progress reviews 4. Establish success metrics tracking 5. Initiate test scaffolding development --- **Document Version**: 1.0.0 **Last Updated**: 2025-08-24 **Status**: Ready for Implementation **Owner**: Development Team **Review Cycle**: Weekly