# MCP Tools Tests
## Overview
Comprehensive test suite for Jakarta Migration MCP tools, including unit tests, performance tests, bootstrap tests, and integration tests.
## Test Structure
```
src/test/java/
├── unit/jakartamigration/mcp/
│ ├── JakartaMigrationToolsTest.java # Unit tests
│ ├── JakartaMigrationToolsPerformanceTest.java # Performance tests
│ └── JakartaMigrationToolsBootstrapTest.java # Bootstrap tests
└── component/jakartamigration/mcp/
└── JakartaMigrationToolsIntegrationTest.java # Integration tests
```
---
## Unit Tests (`JakartaMigrationToolsTest`)
### Coverage
✅ **All 5 MCP Tools Tested**:
- `analyzeJakartaReadiness()` - 4 test cases
- `detectBlockers()` - 2 test cases
- `recommendVersions()` - 1 test case
- `createMigrationPlan()` - 1 test case
- `verifyRuntime()` - 3 test cases
✅ **Error Handling**:
- Non-existent paths
- DependencyGraphException handling
- Runtime exceptions
- JSON escaping
### Test Cases
1. **analyzeJakartaReadiness**:
- ✅ Should analyze Jakarta readiness successfully
- ✅ Should return error when project path does not exist
- ✅ Should handle DependencyGraphException gracefully
- ✅ Should escape JSON special characters correctly
2. **detectBlockers**:
- ✅ Should detect blockers successfully
- ✅ Should return empty blockers list when no blockers found
3. **recommendVersions**:
- ✅ Should recommend versions successfully
4. **createMigrationPlan**:
- ✅ Should create migration plan successfully
5. **verifyRuntime**:
- ✅ Should verify runtime successfully
- ✅ Should use default timeout when timeoutSeconds is null
- ✅ Should return error when JAR file does not exist
- ✅ Should handle runtime verification errors gracefully
**Total**: 12 unit test cases
---
## Performance Tests (`JakartaMigrationToolsPerformanceTest`)
### Performance Benchmarks
All performance tests ensure tools remain fast and responsive with large input data:
1. **Large Project Analysis** (1000+ dependencies):
- ✅ Should complete within **5 seconds**
- Tests: `analyzeJakartaReadiness` with 1000 dependencies, 100 blockers, 200 recommendations
2. **Large Blocker Detection** (500+ blockers):
- ✅ Should complete within **3 seconds**
- Tests: `detectBlockers` with 500 blockers in 1000-dependency graph
3. **Large Version Recommendations** (1000+ artifacts):
- ✅ Should complete within **4 seconds**
- Tests: `recommendVersions` with 1000 artifacts
4. **Large Migration Plan** (500+ files):
- ✅ Should complete within **3 seconds**
- Tests: `createMigrationPlan` with 500 files
5. **Large JSON Serialization** (1000+ items):
- ✅ Should serialize within **2 seconds**
- Tests: JSON serialization of 1000 blockers
6. **Concurrent Requests** (10 concurrent):
- ✅ All requests should complete within **5 seconds**
- Individual requests should complete within **2 seconds**
- Tests: 10 concurrent `analyzeJakartaReadiness` calls
### Performance Targets
| Operation | Input Size | Target Time | Test Status |
|-----------|-----------|-------------|-------------|
| Analyze Readiness | 1000 deps | < 5s | ✅ |
| Detect Blockers | 500 blockers | < 3s | ✅ |
| Recommend Versions | 1000 artifacts | < 4s | ✅ |
| Create Plan | 500 files | < 3s | ✅ |
| JSON Serialization | 1000 items | < 2s | ✅ |
| Concurrent (10x) | Standard | < 5s total | ✅ |
---
## Bootstrap Tests (`JakartaMigrationToolsBootstrapTest`)
### Bootstrap Performance
Tests ensure MCP tools can be initialized quickly:
1. **Single Bootstrap**:
- ✅ Should bootstrap within **1 second**
- Tests: Spring context creation and bean initialization
2. **All Dependencies Initialization**:
- ✅ Should initialize all beans within **1.5 seconds**
- Tests: All 7 beans (DependencyAnalysisModule, DependencyGraphBuilder, etc.)
3. **Multiple Initializations**:
- ✅ Average initialization should be under **2 seconds**
- Tests: 5 context creation/destruction cycles
4. **Immediate Readiness**:
- ✅ Should be ready in **< 10 milliseconds** after bootstrap
- Tests: Tool readiness check immediately after initialization
5. **Memory Leak Check**:
- ✅ Should not leak memory during repeated initialization
- Tests: 10 initialization cycles, memory increase < 50MB
### Bootstrap Targets
| Metric | Target | Test Status |
|--------|--------|-------------|
| Single Bootstrap | < 1s | ✅ |
| All Beans Init | < 1.5s | ✅ |
| Average Init (5x) | < 2s | ✅ |
| Ready Time | < 10ms | ✅ |
| Memory Leak | < 50MB | ✅ |
---
## Integration Tests (`JakartaMigrationToolsIntegrationTest`)
### Integration Coverage
Tests tools with real Spring context:
1. **Spring Context Integration**:
- ✅ Should be autowired and ready to use
- Tests: `@Autowired` injection works
2. **File System Integration**:
- ✅ Should handle non-existent project path gracefully
- ✅ Should handle empty directory
- ✅ Should handle file path instead of directory
- ✅ Should handle JAR file verification with non-existent file
- ✅ Should handle directory path for JAR verification
**Total**: 6 integration test cases
---
## Running the Tests
### Run All MCP Tool Tests
```bash
# Using Gradle
./gradlew test --tests "*JakartaMigrationTools*"
# Using Mise
mise run test --tests "*JakartaMigrationTools*"
```
### Run by Category
```bash
# Unit tests only
./gradlew test --tests "unit.jakartamigration.mcp.*"
# Performance tests only
./gradlew test --tests "*PerformanceTest"
# Bootstrap tests only
./gradlew test --tests "*BootstrapTest"
# Integration tests only
./gradlew test --tests "component.jakartamigration.mcp.*"
```
### Run Individual Test Classes
```bash
# Unit tests
./gradlew test --tests "unit.jakartamigration.mcp.JakartaMigrationToolsTest"
# Performance tests
./gradlew test --tests "unit.jakartamigration.mcp.JakartaMigrationToolsPerformanceTest"
# Bootstrap tests
./gradlew test --tests "unit.jakartamigration.mcp.JakartaMigrationToolsBootstrapTest"
# Integration tests
./gradlew test --tests "component.jakartamigration.mcp.JakartaMigrationToolsIntegrationTest"
```
---
## Test Quality Metrics
### Coverage
- **Unit Tests**: 12 test cases covering all tools and error scenarios
- **Performance Tests**: 6 test cases with large input data
- **Bootstrap Tests**: 5 test cases for initialization performance
- **Integration Tests**: 6 test cases with real Spring context
**Total**: 29 test cases
### Test Quality
✅ **All tests follow project standards**:
- Given-When-Then pattern
- Descriptive `@DisplayName` annotations
- Proper mocking with Mockito
- AssertJ for fluent assertions
- Clear test names (`should*`)
---
## Performance Benchmarks Summary
### Large Input Handling
All tools are tested with:
- **1000+ dependencies** in dependency graphs
- **500+ blockers** in blocker detection
- **1000+ version recommendations**
- **500+ files** in migration plans
- **1000+ items** in JSON responses
### Response Time Targets
| Tool | Small Input | Large Input (1000+) |
|------|-------------|---------------------|
| analyzeJakartaReadiness | < 500ms | < 5s |
| detectBlockers | < 300ms | < 3s |
| recommendVersions | < 400ms | < 4s |
| createMigrationPlan | < 300ms | < 3s |
| verifyRuntime | < 1s | N/A (single JAR) |
### Bootstrap Performance
- **Initial Load**: < 1 second
- **All Beans Ready**: < 1.5 seconds
- **Memory Footprint**: < 50MB increase after 10 cycles
---
## Continuous Integration
These tests should be run in CI/CD pipelines to ensure:
- ✅ All tools work correctly
- ✅ Performance remains acceptable with large inputs
- ✅ Bootstrap time stays fast
- ✅ No memory leaks during repeated initialization
### CI Recommendations
1. **Unit Tests**: Run on every commit
2. **Performance Tests**: Run on PRs and nightly builds
3. **Bootstrap Tests**: Run on PRs to catch initialization regressions
4. **Integration Tests**: Run on PRs with Docker/TestContainers
---
## Future Enhancements
1. **Load Testing**: Test with even larger inputs (10,000+ dependencies)
2. **Stress Testing**: Test with malformed input data
3. **End-to-End Performance**: Test complete migration workflow performance
4. **Memory Profiling**: Detailed memory usage analysis
5. **Concurrent Load**: Test with 100+ concurrent requests
---
*Last Updated: 2026-01-27*
