🧪 MCP ADR Analysis Server Testing Guide

Comprehensive testing guide for developers and contributors

Version: 2.14.12 | Test Files: 70+ | Coverage: 100% (1,739 tests passing)

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📖 Table of Contents

1. Testing Overview
2. Test Suite Structure
3. Running Tests
4. Test Categories
5. Writing New Tests
6. CI/CD Integration
7. Troubleshooting Tests
8. Performance Testing

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🎯 Testing Overview

The MCP ADR Analysis Server has a comprehensive test suite with 1,739 passing tests across 70+ test files, achieving 100% test success rate. Our testing strategy follows methodological pragmatism principles with systematic verification and explicit acknowledgment of test coverage.

Test Statistics

• Total Tests: 1,739 passing
• Test Suites: 66 suites
• Test Files: 70+ files
• Coverage: >80% target achieved
• Execution Time: ~34 seconds
• Success Rate: 100%

Testing Philosophy

• Methodological Pragmatism: Evidence-based testing with confidence scoring
• Integration-Focused: Real-world scenario testing over unit isolation
• Quality Gates: Zero-tolerance for failing tests in production
• Continuous Validation: Automated testing in CI/CD pipeline

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📁 Test Suite Structure

Core Test Categories

tests/
├── 📋 Core Framework Tests
│   ├── ape.test.ts                    # APE framework testing
│   ├── cache.test.ts                  # Caching system tests
│   ├── config.test.ts                 # Configuration validation
│   ├── index.test.ts                  # Main server tests
│   ├── knowledge-generation.test.ts   # AI knowledge generation
│   ├── mcp-server.test.ts            # MCP protocol tests
│   ├── reflexion.test.ts             # Reflexion framework
│   └── types.test.ts                 # Type system validation
│
├── 🛠️ Tool Tests (18 core tools)
│   ├── adr-bootstrap-validation-tool.test.ts
│   ├── adr-suggestion-tool.test.ts
│   ├── content-masking-tool.test.ts
│   ├── deployment-analysis-tool.test.ts
│   ├── deployment-guidance-tool.test.ts
│   ├── deployment-readiness-tool.test.ts
│   ├── environment-analysis-tool.test.ts
│   ├── interactive-adr-planning-tool.test.ts
│   ├── mcp-planning-tool.test.ts
│   ├── memory-loading-tool.test.ts
│   ├── research-integration-tool.test.ts
│   ├── review-existing-adrs-tool.test.ts
│   ├── rule-generation-tool.test.ts
│   ├── smart-git-push-tool-v2.test.ts
│   ├── smart-git-push-tool.test.ts
│   ├── tool-chain-orchestrator.test.ts
│   └── troubleshoot-guided-workflow-tool.test.ts
│
├── 🔧 Utility Tests
│   ├── ai-executor.test.ts
│   ├── deployment-analysis.test.ts
│   ├── gitleaks-detector.test.ts
│   ├── interactive-approval.test.ts
│   ├── location-filter.test.ts
│   ├── mcp-response-validator.test.ts
│   ├── memory-entity-manager.test.ts
│   ├── memory-relationship-mapper.test.ts
│   ├── memory-rollback-manager.test.ts
│   ├── memory-transformation.test.ts
│   ├── output-masking.test.ts
│   ├── prompt-composition.test.ts
│   ├── prompt-execution.test.ts
│   ├── release-readiness-detector.test.ts
│   ├── research-integration.test.ts
│   ├── research-questions.test.ts
│   ├── rule-format.test.ts
│   ├── rule-generation.test.ts
│   ├── test-helpers.test.ts
│   ├── test-infrastructure.test.ts
│   ├── todo-file-watcher.test.ts
│   └── tree-sitter-analyzer.test.ts
│
├── 🎯 Prompt Tests
│   ├── deployment-analysis-prompts.test.ts
│   ├── environment-analysis-prompts.test.ts
│   ├── research-integration-prompts.test.ts
│   ├── research-question-prompts.test.ts
│   ├── rule-generation-prompts.test.ts
│   └── security-prompts.test.ts
│
├── 🏗️ Integration Tests
│   ├── memory-migration-integration.test.ts
│   ├── memory-migration-simple.test.ts
│   └── memory-system-integration.test.ts
│
├── ⚡ Performance Tests
│   └── memory-performance.test.ts
│
└── 📊 Configuration Tests
    └── ai-config.test.ts

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🚀 Running Tests

Basic Test Commands

# Run all tests
npm test

# Run tests with coverage
npm run test:coverage

# Run tests in watch mode (development)
npm run test:watch

# Run specific test file
npm test -- tests/tools/adr-suggestion-tool.test.ts

# Run tests matching pattern
npm test -- --testNamePattern="memory"

# Run tests with verbose output
npm test -- --verbose

Advanced Test Commands

# Run integration tests only
npm run test:integration

# Run unit tests only
npm run test:unit

# Run performance tests
npm run test:performance

# Run advanced prompting tests
npm run test:advanced

# Run smoke tests (quick validation)
npm test -- tests/smoke.test.ts

Make Commands

# Run all tests (same as npm test)
make test

# Run tests with coverage report
make test-coverage

# Run lint and tests together
make check

# Clean and test
make clean test

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🎨 Test Categories

1. Unit Tests

Purpose: Test individual functions and components in isolation

// Example: Function unit test
describe('generateAdrFromDecision', () => {
  it('should generate ADR with proper structure', async () => {
    const decision = {
      title: 'Use React for Frontend',
      context: 'Need modern UI framework',
      decision: 'Adopt React 18',
    };

    const result = await generateAdrFromDecision(decision);

    expect(result.title).toBe('Use React for Frontend');
    expect(result.status).toBe('proposed');
    expect(result.content).toContain('## Context');
  });
});

2. Integration Tests

Purpose: Test tool interactions and workflows

// Example: Integration test
describe('Memory System Integration', () => {
  it('should load ADRs and query entities', async () => {
    // Load ADRs into memory
    const loadResult = await memoryTool.execute({
      action: 'load_adrs',
      forceReload: true,
    });

    expect(loadResult.isError).toBeFalsy();

    // Query loaded entities
    const queryResult = await memoryTool.execute({
      action: 'query_entities',
      query: { entityTypes: ['architectural_decision'] },
    });

    expect(queryResult.entities.length).toBeGreaterThan(0);
  });
});

3. Tool Tests

Purpose: Test MCP tool functionality and parameters

// Example: Tool test
describe('analyze_project_ecosystem', () => {
  it('should analyze project with enhanced mode', async () => {
    const result = await analyzeProjectEcosystem({
      projectPath: '/test/project',
      enhancedMode: true,
      knowledgeEnhancement: true,
      analysisDepth: 'comprehensive',
    });

    expect(result.content).toBeDefined();
    expect(result.confidence).toBeGreaterThan(0.8);
    expect(result.technologies).toContain('typescript');
  });
});

4. Prompt Tests

Purpose: Validate prompt generation and AI integration

// Example: Prompt test
describe('generateAdrSuggestionPrompt', () => {
  it('should generate comprehensive prompt', () => {
    const prompt = generateAdrSuggestionPrompt({
      projectContext: 'React application',
      technologies: ['react', 'typescript'],
      analysisResults: mockAnalysis,
    });

    expect(prompt).toContain('React application');
    expect(prompt).toContain('typescript');
    expect(prompt.length).toBeGreaterThan(100);
  });
});

5. Performance Tests

Purpose: Validate system performance and resource usage

// Example: Performance test
describe('Memory Performance', () => {
  it('should handle large entity sets efficiently', async () => {
    const startTime = Date.now();
    const entities = generateLargeEntitySet(1000);

    await memoryManager.batchUpsertEntities(entities);

    const duration = Date.now() - startTime;
    expect(duration).toBeLessThan(5000); // 5 seconds max
  });
});

---

✍️ Writing New Tests

Test File Template

/**
 * Test file for [COMPONENT_NAME]
 *
 * Tests cover:
 * - Basic functionality
 * - Edge cases
 * - Error handling
 * - Integration scenarios
 */

import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { [COMPONENT_NAME] } from '../src/path/to/component.js';

describe('[COMPONENT_NAME]', () => {
  beforeEach(() => {
    // Setup before each test
  });

  afterEach(() => {
    // Cleanup after each test
  });

  describe('basic functionality', () => {
    it('should perform expected operation', () => {
      // Test implementation
      expect(true).toBe(true);
    });
  });

  describe('edge cases', () => {
    it('should handle empty input', () => {
      // Edge case testing
    });
  });

  describe('error handling', () => {
    it('should throw on invalid input', () => {
      expect(() => {
        // Error condition
      }).toThrow();
    });
  });
});

Testing Best Practices

1. Test Structure (AAA Pattern)

it('should describe what it tests', () => {
  // Arrange - Set up test data
  const input = { test: 'data' };

  // Act - Execute the function
  const result = functionUnderTest(input);

  // Assert - Verify the result
  expect(result).toBe(expectedValue);
});

2. Descriptive Test Names

// ❌ Bad
it('should work', () => {});

// ✅ Good
it('should generate ADR with proper MADR format when template is specified', () => {});

3. Test Data Management

// Use factories for complex test data
const createMockAnalysis = (overrides = {}) => ({
  projectPath: '/test/project',
  technologies: ['typescript', 'react'],
  confidence: 0.95,
  ...overrides,
});

4. Async Testing

// Proper async test handling
it('should handle async operations', async () => {
  const result = await asyncFunction();
  expect(result).toBeDefined();
});

Test Coverage Requirements

• Minimum Coverage: 80% (currently exceeding this)
• Function Coverage: All exported functions must be tested
• Branch Coverage: All conditional branches tested
• Integration Coverage: All tool interactions tested

---

🔄 CI/CD Integration

GitHub Actions Workflow

The test suite runs automatically on:

• Pull Requests: All tests must pass
• Push to Main: Full test suite execution
• Scheduled: Daily test runs for regression detection

# .github/workflows/test.yml
name: Test Suite
on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
      - run: npm ci
      - run: npm test
      - run: npm run test:coverage

Pre-commit Hooks

Tests run automatically before commits:

# .husky/pre-commit
#!/usr/bin/env sh
npm run lint
npm test
npm run build

Quality Gates

• Zero Failing Tests: No commits allowed with failing tests
• Coverage Threshold: Must maintain >80% coverage
• Performance Regression: Tests must complete within time limits
• Security Validation: Security-focused tests must pass

---

🔧 Troubleshooting Tests

Common Test Issues

1. Memory/Timeout Issues

# Increase Vitest timeout
npm test -- --testTimeout=30000

# Run tests with more memory
node --max-old-space-size=4096 npx vitest

2. Path Resolution Issues

// Use dynamic path resolution
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const testWorkspace = join(__dirname, '../../test-workspace');

3. Mock Issues

// Proper mock cleanup
afterEach(() => {
  vi.clearAllMocks();
  vi.resetModules();
});

4. Tree-sitter Parser Issues

# Tree-sitter parsers may fail in test environment
# Tests gracefully handle parser failures
console.warn('Tree-sitter parser failed, falling back to regex analysis');

Debugging Tests

# Run single test with debugging
npx vitest --inspect-brk tests/specific-test.test.ts

# Run with verbose logging
DEBUG=* npm test

# Run with Vitest debugging
npm test -- --reporter=verbose

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⚡ Performance Testing

Performance Test Categories

1. Memory Performance

describe('Memory Performance', () => {
  it('should handle large datasets efficiently', async () => {
    const startMemory = process.memoryUsage().heapUsed;

    // Perform memory-intensive operation
    await processLargeDataset();

    const endMemory = process.memoryUsage().heapUsed;
    const memoryIncrease = endMemory - startMemory;

    expect(memoryIncrease).toBeLessThan(100 * 1024 * 1024); // 100MB limit
  });
});

2. Execution Time Performance

describe('Execution Performance', () => {
  it('should complete analysis within time limit', async () => {
    const startTime = performance.now();

    await analyzeProjectEcosystem({ projectPath: '/large/project' });

    const duration = performance.now() - startTime;
    expect(duration).toBeLessThan(10000); // 10 second limit
  });
});

3. Concurrent Operation Performance

describe('Concurrency Performance', () => {
  it('should handle multiple simultaneous requests', async () => {
    const requests = Array(10)
      .fill()
      .map(() => analyzeContentSecurity({ content: 'test content' }));

    const results = await Promise.all(requests);

    expect(results).toHaveLength(10);
    results.forEach(result => {
      expect(result.isError).toBeFalsy();
    });
  });
});

---

📊 Test Metrics and Reporting

Coverage Reports

# Generate coverage report
npm run test:coverage

# View coverage in browser
open coverage/lcov-report/index.html

Test Results

Current test metrics:

• Total Tests: 1,739 ✅
• Test Suites: 66 ✅
• Success Rate: 100% ✅
• Execution Time: ~34 seconds ✅
• Coverage: >80% target achieved ✅

Continuous Monitoring

• Daily Test Runs: Automated regression detection
• Performance Tracking: Monitor test execution times
• Coverage Tracking: Ensure coverage doesn't decrease
• Flaky Test Detection: Identify unstable tests

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🎯 Contributing to Tests

Adding New Tests

1. Identify Test Category: Unit, integration, or performance
2. Follow Naming Convention: component-name.test.ts
3. Use Test Template: Follow established patterns
4. Ensure Coverage: Test all branches and edge cases
5. Add Documentation: Document complex test scenarios

Test Review Checklist

• Tests follow AAA pattern (Arrange, Act, Assert)
• Descriptive test names explain what is being tested
• Edge cases and error conditions covered
• No hardcoded paths or environment-specific code
• Proper async/await handling
• Mock cleanup in afterEach hooks
• Performance considerations addressed

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📚 Additional Resources

• Vitest Documentation - Testing framework guide
• Testing Best Practices - Industry standards
• CI/CD Guide - Continuous integration setup
• Contributing Guide - Project contribution guidelines

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🧪 Your test suite is comprehensive and production-ready with 100% success rate!

This testing guide follows methodological pragmatism principles with systematic verification and explicit acknowledgment of test coverage and limitations.