# Phased Improvement Plan - Local Testing Agent MCP Server
**Last Updated**: 2025-12-12 (Session 5)
**Status**: Phase 1 Complete ✅ | Phase 2.1 Complete ✅ | 91% Test Coverage ✅ | Phase 2.2-2.4 & Phase 3-4 Pending
## Overview
This document outlines the phased improvement plan for the local testing agent MCP server to support comprehensive multi-language testing capabilities.
---
## Current State (Baseline)
### ✅ Implemented Features
- **Languages Supported**: Python, JavaScript/TypeScript
- **Test Detection**: Comprehensive patterns for Python and JS/TS test files
- **Test Execution**: pytest (Python), jest (JS/TS)
- **Reporting**: JSON reports, Markdown coverage maps, AI test plans
- **MCP Tools**: scan_repository, run_all_tests, full_phase2_pipeline
### ❌ Known Issues (FIXED)
- ✅ Syntax error in test_smoke.py - RESOLVED
- ✅ EXCLUDED_DIRS inconsistency between Phase 1 and Phase 2 - RESOLVED
---
## Phase 1: Enhanced Multi-Language Support (Priority: HIGH) ✅ COMPLETE
### Objective
Expand language detection and test execution to cover the most popular programming languages.
### 1.1 Add Go Language Support ✅
- **File Extensions**: `.go`
- **Test Pattern**: Files ending with `_test.go`
- **Test Framework**: `go test`
- **Test Command**: `go test ./... -v`
- **Status**: ✅ **IMPLEMENTED** (2025-12-10)
- **Location**: `testing_agent.py:142-148, 432-447`
### 1.2 Add Rust Language Support ✅
- **File Extensions**: `.rs`
- **Test Pattern**: Files ending with `_test.rs`, files in `tests/` or `test/` directories
- **Test Framework**: `cargo test`
- **Test Command**: `cargo test --verbose`
- **Status**: ✅ **IMPLEMENTED** (2025-12-10)
- **Location**: `testing_agent.py:150-161, 449-464`
### 1.3 Add Java Language Support ✅
- **File Extensions**: `.java`
- **Test Pattern**: Files ending with `Test.java` or `Tests.java`, files in `test/` or `tests/` directories
- **Test Framework**: JUnit (via Maven or Gradle)
- **Test Command**: `mvn test || gradle test`
- **Status**: ✅ **IMPLEMENTED** (2025-12-10)
- **Location**: `testing_agent.py:163-175, 466-482`
### 1.4 Add Ruby Language Support ✅
- **File Extensions**: `.rb`
- **Test Pattern**: Files ending with `_test.rb` or `_spec.rb`, files in `test/`, `tests/`, or `spec/` directories
- **Test Framework**: RSpec or Minitest
- **Test Command**: `rspec || rake test`
- **Status**: ✅ **IMPLEMENTED** (2025-12-10)
- **Location**: `testing_agent.py:177-190, 484-500`
### 1.5 Add PHP Language Support
- **File Extensions**: `.php`
- **Test Pattern**: Files ending with `Test.php`, files in `tests/` directory
- **Test Framework**: PHPUnit
- **Test Command**: `phpunit`
- **Status**: ⏳ **Deferred** (Not in current scope)
### 1.6 Add C# Language Support
- **File Extensions**: `.cs`
- **Test Pattern**: Files ending with `Tests.cs` or `Test.cs`, files in test projects
- **Test Framework**: xUnit, NUnit, MSTest
- **Test Command**: `dotnet test`
- **Status**: ⏳ **Deferred** (Not in current scope)
---
## Phase 2: Advanced Features (Priority: MEDIUM)
### 2.1 Parallel Test Execution ✅
- Execute tests for different languages in parallel
- Configurable concurrency limits
- **Status**: ✅ **COMPLETE** (2025-12-12)
- **Implementation**:
- Added `execute_planned_runs_parallel()` function with ThreadPoolExecutor
- Added `execute_single_test_run()` helper for parallel execution
- New MCP tool: `run_all_tests_parallel(max_workers=4)`
- Configurable max_workers parameter (default: 4)
- Comprehensive test coverage with 7 new unit tests
- **Location**: `testing_agent.py:680-801, 939-986`
### 2.2 Coverage Collection Integration
- Python: pytest-cov integration (add to requirements.txt)
- JavaScript: Istanbul/nyc integration
- Go: Built-in coverage support
- Rust: tarpaulin or llvm-cov
- **Status**: ⏳ Pending
### 2.3 Smart Test Detection
- Detect test frameworks automatically (e.g., Jest vs Mocha, RSpec vs Minitest)
- Use configuration files (package.json, pytest.ini, etc.) to determine commands
- **Status**: ⏳ Pending
### 2.4 Test Result Parsing
- Parse test output to extract individual test results
- Count actual test passes/failures/skips
- Generate detailed per-test reports
- **Status**: ⏳ Pending
---
## Phase 3: Quality & Reliability (Priority: MEDIUM)
### 3.1 Comprehensive Test Suite
- Write real unit tests for all modules (not just stubs)
- Integration tests for multi-language scenarios
- End-to-end tests for full pipeline
- **Status**: ⏳ Pending
### 3.2 Error Handling Improvements
- Better error messages for missing test frameworks
- Graceful degradation when tools not installed
- Validation of test commands before execution
- **Status**: ⏳ Pending
### 3.3 Configuration System
- Support for .mcp-config.json or similar
- Per-language test command customization
- Exclude patterns customization
- **Status**: ⏳ Pending
---
## Phase 4: Developer Experience (Priority: LOW)
### 4.1 Watch Mode
- File watcher to auto-run tests on changes
- Incremental test execution
- **Status**: ⏳ Future
### 4.2 Interactive Mode
- CLI interface for selecting which languages to test
- Filter by test file patterns
- **Status**: ⏳ Future
### 4.3 CI/CD Integration Helpers
- Generate GitHub Actions workflows
- Generate GitLab CI configurations
- **Status**: ⏳ Future
---
## Implementation Order
### Session 1 (Completed ✅)
1. ✅ Fix syntax error in test_smoke.py - COMPLETED
2. ✅ Fix EXCLUDED_DIRS inconsistency - COMPLETED
### Session 2 (Completed ✅)
1. ✅ Created comprehensive phased improvement plan (IMPROVEMENT_PLAN.md)
2. ✅ Add Go language support - COMPLETED
3. ✅ Add Rust language support - COMPLETED
4. ✅ Add Java language support - COMPLETED
5. ✅ Add Ruby language support - COMPLETED
6. ✅ Update plan_test_runs for all new languages - COMPLETED
7. ✅ Fix write_all_skipped_report for all languages - COMPLETED
8. ✅ Test multi-language detection (direct Python testing) - COMPLETED
9. ✅ Update CLAUDE.md documentation - COMPLETED
10. ✅ Published to GitHub (https://github.com/marcelkurvers/local-testing-agent)
### Session 3 (Completed ✅)
1. ✅ Add pytest-cov to requirements.txt - COMPLETED
2. ✅ Write comprehensive unit tests (17 real tests, 67% coverage) - COMPLETED
3. ✅ Implement smart framework detection (detect_test_frameworks) - COMPLETED
4. ✅ Smart detection for package.json, Cargo.toml, pom.xml, Gemfile - COMPLETED
5. ✅ All tests passing (18 passed, 4 skipped) - COMPLETED
### Session 4 (Completed ✅)
1. ✅ Used MCP server to test itself (dogfooding) - COMPLETED
2. ✅ Verified all 6 languages detected correctly - COMPLETED
3. ✅ Analyzed test coverage gaps (67% baseline) - COMPLETED
4. ✅ Implemented Phase 2.1 (Parallel test execution) - COMPLETED
5. ✅ Added execute_planned_runs_parallel() function - COMPLETED
6. ✅ Added run_all_tests_parallel MCP tool - COMPLETED
7. ✅ Wrote 16 new unit tests (7 for parallel execution, 9 for framework detection) - COMPLETED
8. ✅ Increased test coverage from 67% to 76% - COMPLETED
9. ✅ Total tests now: 34 passing (up from 17) - COMPLETED
### Session 5 (Completed ✅)
1. ✅ Analyzed coverage gaps (identified 89 missing lines at 76%) - COMPLETED
2. ✅ Added 17 new unit tests for uncovered code paths - COMPLETED
3. ✅ Tests for sequential execute_planned_runs function (4 tests) - COMPLETED
4. ✅ Tests for plan_test_runs edge cases (4 tests for Go, Rust, Java, Ruby) - COMPLETED
5. ✅ Tests for framework detection edge cases (4 tests for mocha, vitest, go, minitest) - COMPLETED
6. ✅ Tests for MCP tool functions (4 tests) - COMPLETED
7. ✅ Test for build_test_plan edge case (1 test) - COMPLETED
8. ✅ Increased test coverage from 76% to 91% - COMPLETED
9. ✅ Total tests now: 120 passing (up from 103) - COMPLETED
10. ✅ Reduced missing lines from 89 to 34 (62% reduction) - COMPLETED
### Next Session
1. ✅ Test coverage now at 91% (exceeded 90% goal!)
2. Test parallel execution with real multi-language projects
3. Implement Phase 2.2 (Coverage collection integration)
4. Add more integration tests for full pipeline scenarios
5. Consider Phase 1.5-1.6 (Add PHP and C# support)
### Future Sessions
1. Add PHP and C# support (Phase 1.5-1.6)
2. Coverage collection (Phase 2.2)
3. Smart detection (Phase 2.3)
4. Configuration system (Phase 3.3)
---
## Success Metrics
- [x] **Support for 6 programming languages** (Python, JS/TS, Go, Rust, Java, Ruby) ✅
- [ ] Support for 8+ programming languages (add PHP, C#)
- [x] **91% test coverage on testing_agent.py** (51 unit tests for testing_agent.py alone!) ✅
- [x] **90%+ test coverage target achieved!** (went from 67% → 76% → 91%) ✅
- [x] **Documentation updated with all supported languages** (CLAUDE.md) ✅
- [x] **Smart framework detection implemented** (package.json, Cargo.toml, pom.xml, Gemfile) ✅
- [x] **Parallel test execution implemented** (Phase 2.1 complete) ✅
- [x] **All language detections verified with dogfooding** (MCP server tested itself) ✅
- [x] **Zero failing tests in current test suite** (120 passed total) ✅
- [ ] Zero failing tests with comprehensive CI/CD pipeline
---
## Notes
- Each language addition should be tested with a real project before marking complete
- Maintain backward compatibility with existing Python/JS projects
- Keep the API simple - no breaking changes to MCP tool signatures
