proffesor-for-testing__agentic-qe/tests/mcp/handlers/test/TestTools.test.ts

/**
 * Comprehensive Tests for 5 Enhanced Test MCP Tools
 *
 * Tools tested:
 * 1. test_generate_enhanced - Enhanced test generation with AI
 * 2. test_execute_parallel - Parallel test execution orchestration
 * 3. test_optimize_sublinear - Sublinear test optimization
 * 4. test_report_comprehensive - Multi-format test reporting
 * 5. test_coverage_detailed - Detailed coverage analysis
 *
 * @version 1.0.0
 */

import { TestGenerateEnhancedHandler, TestGenerateEnhancedArgs } from '../../../../src/mcp/handlers/test/test-generate-enhanced';
import { TestExecuteParallelHandler, TestExecuteParallelArgs } from '../../../../src/mcp/handlers/test/test-execute-parallel';
import { TestOptimizeSublinearHandler, TestOptimizeSublinearArgs } from '../../../../src/mcp/handlers/test/test-optimize-sublinear';
import { TestReportComprehensiveHandler, TestReportComprehensiveArgs } from '../../../../src/mcp/handlers/test/test-report-comprehensive';
import { TestCoverageDetailedHandler, TestCoverageDetailedArgs } from '../../../../src/mcp/handlers/test/test-coverage-detailed';

describe('Enhanced Test MCP Tools - Complete Test Suite', () => {

  // ===== TEST 1: TestGenerateEnhancedHandler =====
  describe('TestGenerateEnhancedHandler - Enhanced AI Test Generation', () => {
    let handler: TestGenerateEnhancedHandler;

    beforeEach(() => {
      handler = new TestGenerateEnhancedHandler();
    });

    it('should initialize with AI models and pattern recognition', () => {
      expect(handler).toBeDefined();
      expect(handler['aiModels']).toBeDefined();
      expect(handler['patternRecognizer']).toBeDefined();
    });

    it('should generate tests with AI-powered code analysis', async () => {
      const args: TestGenerateEnhancedArgs = {
        sourceCode: 'function add(a, b) { return a + b; }',
        language: 'javascript',
        testType: 'unit',
        aiEnhancement: true,
        coverageGoal: 95
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.tests).toBeInstanceOf(Array);
      expect(result.data.tests.length).toBeGreaterThan(0);
      expect(result.data.aiInsights).toBeDefined();
      expect(result.data.coverage.predicted).toBeGreaterThanOrEqual(85);
    });

    it('should detect anti-patterns and suggest improvements', async () => {
      const args: TestGenerateEnhancedArgs = {
        sourceCode: 'function legacy() { var x = 1; eval("x + 1"); }',
        language: 'javascript',
        testType: 'unit',
        aiEnhancement: true,
        detectAntiPatterns: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.antiPatterns).toBeDefined();
      expect(result.data.antiPatterns.length).toBeGreaterThan(0);
      expect(result.data.suggestions).toBeInstanceOf(Array);
    });

    it('should generate property-based tests with AI', async () => {
      const args: TestGenerateEnhancedArgs = {
        sourceCode: 'function sort(arr) { return arr.sort(); }',
        language: 'javascript',
        testType: 'property-based',
        aiEnhancement: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.properties).toBeDefined();
      expect(result.data.tests.some(t => t.type === 'property')).toBe(true);
    });

    it('should support multiple programming languages', async () => {
      const languages = ['javascript', 'typescript', 'python', 'java', 'go'];

      for (const language of languages) {
        const args: TestGenerateEnhancedArgs = {
          sourceCode: 'function example() { return true; }',
          language,
          testType: 'unit',
          aiEnhancement: false
        };

        const result = await handler.handle(args);
        expect(result.success).toBe(true);
        expect(result.data.language).toBe(language);
      }
    });

    it('should handle complex nested functions', async () => {
      const args: TestGenerateEnhancedArgs = {
        sourceCode: `
          function outer(x) {
            return function inner(y) {
              return function innermost(z) {
                return x + y + z;
              };
            };
          }
        `,
        language: 'javascript',
        testType: 'unit',
        aiEnhancement: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.complexity).toBeDefined();
      expect(result.data.complexity.score).toBeGreaterThan(0);
    });
  });

  // ===== TEST 2: TestExecuteParallelHandler =====
  describe('TestExecuteParallelHandler - Parallel Test Execution', () => {
    let handler: TestExecuteParallelHandler;

    beforeEach(() => {
      handler = new TestExecuteParallelHandler();
    });

    it('should initialize with worker pool and queue', () => {
      expect(handler).toBeDefined();
      expect(handler['workerPool']).toBeDefined();
      expect(handler['executionQueue']).toBeDefined();
    });

    it('should execute tests in parallel', async () => {
      const args: TestExecuteParallelArgs = {
        testFiles: ['test1.test.js', 'test2.test.js', 'test3.test.js'],
        parallelism: 3,
        timeout: 5000,
        retryFailures: true,
        maxRetries: 3
      };

      const startTime = Date.now();
      const result = await handler.handle(args);
      const duration = Date.now() - startTime;

      expect(result.success).toBe(true);
      expect(result.data.results).toBeInstanceOf(Array);
      expect(result.data.results.length).toBe(3);
      expect(result.data.executionStrategy).toBe('parallel');
      expect(result.data.totalDuration).toBeLessThan(duration * 3); // Should be faster than sequential
    });

    it('should implement retry logic for flaky tests', async () => {
      const args: TestExecuteParallelArgs = {
        testFiles: ['flaky.test.js'],
        parallelism: 1,
        retryFailures: true,
        maxRetries: 3,
        retryDelay: 100
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.retries).toBeDefined();
      expect(result.data.retries.attempted).toBeGreaterThanOrEqual(0);
    });

    it('should handle test timeouts gracefully', async () => {
      const args: TestExecuteParallelArgs = {
        testFiles: ['slow.test.js'],
        parallelism: 1,
        timeout: 100, // Very short timeout
        continueOnFailure: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.timeouts).toBeDefined();
    });

    it('should distribute tests across workers efficiently', async () => {
      const args: TestExecuteParallelArgs = {
        testFiles: Array(20).fill(null).map((_, i) => `test${i}.test.js`),
        parallelism: 4,
        loadBalancing: 'round-robin'
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.workerStats).toBeDefined();
      expect(result.data.workerStats.totalWorkers).toBe(4);
    });

    it('should aggregate results from parallel execution', async () => {
      const args: TestExecuteParallelArgs = {
        testFiles: ['test1.test.js', 'test2.test.js'],
        parallelism: 2,
        collectCoverage: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.summary).toBeDefined();
      expect(result.data.summary.total).toBeGreaterThan(0);
      expect(result.data.summary.passed).toBeDefined();
      expect(result.data.summary.failed).toBeDefined();
    });
  });

  // ===== TEST 3: TestOptimizeSublinearHandler =====
  describe('TestOptimizeSublinearHandler - Sublinear Optimization', () => {
    let handler: TestOptimizeSublinearHandler;

    beforeEach(() => {
      handler = new TestOptimizeSublinearHandler();
    });

    it('should initialize with optimization algorithms', () => {
      expect(handler).toBeDefined();
      expect(handler['algorithms']).toBeDefined();
      expect(handler['jlTransform']).toBeDefined(); // Johnson-Lindenstrauss
    });

    it('should optimize test suite using sublinear algorithms', async () => {
      const args: TestOptimizeSublinearArgs = {
        testSuite: {
          tests: Array(1000).fill(null).map((_, i) => ({
            id: `test-${i}`,
            duration: Math.random() * 100,
            coverage: Math.random()
          }))
        },
        algorithm: 'johnson-lindenstrauss',
        targetReduction: 0.3, // Reduce to 30% of original
        maintainCoverage: 0.95
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.optimized.tests.length).toBeLessThan(args.testSuite.tests.length);
      expect(result.data.coverage.maintained).toBeGreaterThanOrEqual(0.90);
      expect(result.data.speedup).toBeGreaterThan(1);
    });

    it('should use temporal advantage prediction', async () => {
      const args: TestOptimizeSublinearArgs = {
        testSuite: {
          tests: Array(500).fill(null).map((_, i) => ({
            id: `test-${i}`,
            duration: Math.random() * 50
          }))
        },
        algorithm: 'temporal-advantage',
        predictFailures: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.predictions).toBeDefined();
      expect(result.data.temporalAdvantage).toBeGreaterThan(0);
    });

    it('should identify redundant tests', async () => {
      const args: TestOptimizeSublinearArgs = {
        testSuite: {
          tests: [
            { id: 'test-1', coverage: ['line-1', 'line-2'] },
            { id: 'test-2', coverage: ['line-1', 'line-2'] }, // Duplicate
            { id: 'test-3', coverage: ['line-3'] }
          ]
        },
        algorithm: 'redundancy-detection'
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.redundant).toBeDefined();
      expect(result.data.redundant.length).toBeGreaterThan(0);
    });

    it('should calculate complexity reduction metrics', async () => {
      const args: TestOptimizeSublinearArgs = {
        testSuite: {
          tests: Array(100).fill(null).map((_, i) => ({ id: `test-${i}` }))
        },
        algorithm: 'sublinear',
        metrics: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.metrics).toBeDefined();
      expect(result.data.metrics.timeComplexity).toBeDefined();
      expect(result.data.metrics.spaceComplexity).toBeDefined();
    });

    it('should maintain critical tests during optimization', async () => {
      const args: TestOptimizeSublinearArgs = {
        testSuite: {
          tests: [
            { id: 'critical-1', priority: 'critical' },
            { id: 'normal-1', priority: 'normal' },
            { id: 'low-1', priority: 'low' }
          ]
        },
        algorithm: 'sublinear',
        preserveCritical: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      const criticalTest = result.data.optimized.tests.find((t: any) => t.id === 'critical-1');
      expect(criticalTest).toBeDefined();
    });
  });

  // ===== TEST 4: TestReportComprehensiveHandler =====
  describe('TestReportComprehensiveHandler - Multi-Format Reporting', () => {
    let handler: TestReportComprehensiveHandler;

    beforeEach(() => {
      handler = new TestReportComprehensiveHandler();
    });

    it('should initialize with format generators', () => {
      expect(handler).toBeDefined();
      expect(handler['formatters']).toBeDefined();
      expect(handler['templateEngine']).toBeDefined();
    });

    it('should generate HTML report', async () => {
      const args: TestReportComprehensiveArgs = {
        results: {
          total: 100,
          passed: 85,
          failed: 10,
          skipped: 5,
          duration: 12345
        },
        format: 'html',
        includeCharts: true,
        includeTrends: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.format).toBe('html');
      expect(result.data.content).toContain('<html>');
      expect(result.data.content).toContain('passed');
      expect(result.data.charts).toBeDefined();
    });

    it('should generate JSON report', async () => {
      const args: TestReportComprehensiveArgs = {
        results: {
          total: 50,
          passed: 45,
          failed: 5
        },
        format: 'json',
        structured: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.format).toBe('json');
      const parsed = JSON.parse(result.data.content);
      expect(parsed.total).toBe(50);
      expect(parsed.passed).toBe(45);
    });

    it('should generate JUnit XML report', async () => {
      const args: TestReportComprehensiveArgs = {
        results: {
          total: 25,
          passed: 20,
          failed: 5,
          suites: [
            { name: 'Suite1', tests: 15, failures: 2 },
            { name: 'Suite2', tests: 10, failures: 3 }
          ]
        },
        format: 'junit'
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.format).toBe('junit');
      expect(result.data.content).toContain('<?xml');
      expect(result.data.content).toContain('<testsuite');
    });

    it('should generate markdown report', async () => {
      const args: TestReportComprehensiveArgs = {
        results: {
          total: 100,
          passed: 90,
          failed: 10
        },
        format: 'markdown',
        includeSummary: true,
        includeDetails: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.format).toBe('markdown');
      expect(result.data.content).toContain('#');
      expect(result.data.content).toContain('|'); // Table format
    });

    it('should include trend analysis in reports', async () => {
      const args: TestReportComprehensiveArgs = {
        results: {
          total: 100,
          passed: 85,
          failed: 15
        },
        format: 'html',
        includeTrends: true,
        historicalData: [
          { date: '2024-01-01', passed: 80, failed: 20 },
          { date: '2024-01-02', passed: 82, failed: 18 },
          { date: '2024-01-03', passed: 85, failed: 15 }
        ]
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.trends).toBeDefined();
      expect(result.data.trends.direction).toBeDefined(); // 'improving', 'declining', 'stable'
    });
  });

  // ===== TEST 5: TestCoverageDetailedHandler =====
  describe('TestCoverageDetailedHandler - Detailed Coverage Analysis', () => {
    let handler: TestCoverageDetailedHandler;

    beforeEach(() => {
      handler = new TestCoverageDetailedHandler();
    });

    it('should initialize with coverage analyzers', () => {
      expect(handler).toBeDefined();
      expect(handler['analyzers']).toBeDefined();
      expect(handler['gapDetector']).toBeDefined();
    });

    it('should analyze line coverage in detail', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            {
              path: 'src/module.js',
              lines: { total: 100, covered: 85, uncovered: 15 }
            }
          ]
        },
        analysisType: 'line',
        detailLevel: 'comprehensive'
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.lineCoverage).toBeDefined();
      expect(result.data.lineCoverage.percentage).toBe(85);
      expect(result.data.uncoveredLines).toBeInstanceOf(Array);
    });

    it('should analyze branch coverage', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            {
              path: 'src/logic.js',
              branches: { total: 50, covered: 40, uncovered: 10 }
            }
          ]
        },
        analysisType: 'branch',
        identifyGaps: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.branchCoverage).toBeDefined();
      expect(result.data.branchCoverage.percentage).toBe(80);
      expect(result.data.gaps).toBeDefined();
    });

    it('should analyze function coverage', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            {
              path: 'src/utils.js',
              functions: { total: 20, covered: 18, uncovered: 2 }
            }
          ]
        },
        analysisType: 'function'
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.functionCoverage).toBeDefined();
      expect(result.data.functionCoverage.percentage).toBe(90);
    });

    it('should detect coverage gaps with priorities', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            {
              path: 'src/critical.js',
              lines: { total: 100, covered: 60 },
              importance: 'high'
            }
          ]
        },
        analysisType: 'comprehensive',
        identifyGaps: true,
        prioritizeGaps: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.gaps).toBeDefined();
      expect(result.data.gaps.length).toBeGreaterThan(0);
      expect(result.data.gaps[0].priority).toBeDefined();
    });

    it('should generate coverage improvement suggestions', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            {
              path: 'src/feature.js',
              lines: { total: 200, covered: 120 }
            }
          ]
        },
        analysisType: 'comprehensive',
        generateSuggestions: true
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.suggestions).toBeDefined();
      expect(result.data.suggestions).toBeInstanceOf(Array);
      expect(result.data.suggestions.length).toBeGreaterThan(0);
    });

    it('should calculate coverage trends over time', async () => {
      const args: TestCoverageDetailedArgs = {
        coverageData: {
          files: [
            { path: 'src/app.js', lines: { covered: 85, total: 100 } }
          ]
        },
        analysisType: 'comprehensive',
        comparePrevious: true,
        historicalData: [
          { date: '2024-01-01', coverage: 75 },
          { date: '2024-01-02', coverage: 80 },
          { date: '2024-01-03', coverage: 85 }
        ]
      };

      const result = await handler.handle(args);

      expect(result.success).toBe(true);
      expect(result.data.trend).toBeDefined();
      expect(result.data.trend.direction).toBe('improving');
      expect(result.data.trend.changePercentage).toBeGreaterThan(0);
    });
  });

  // ===== INTEGRATION TESTS =====
  describe('Integration Tests - Tools Working Together', () => {
    it('should generate, execute, optimize, and report', async () => {
      const generateHandler = new TestGenerateEnhancedHandler();
      const executeHandler = new TestExecuteParallelHandler();
      const optimizeHandler = new TestOptimizeSublinearHandler();
      const reportHandler = new TestReportComprehensiveHandler();

      // 1. Generate tests
      const generateResult = await generateHandler.handle({
        sourceCode: 'function add(a, b) { return a + b; }',
        language: 'javascript',
        testType: 'unit',
        aiEnhancement: true
      });

      expect(generateResult.success).toBe(true);

      // 2. Execute tests
      const executeResult = await executeHandler.handle({
        testFiles: generateResult.data.tests.map((t: any) => t.id),
        parallelism: 2
      });

      expect(executeResult.success).toBe(true);

      // 3. Optimize test suite
      const optimizeResult = await optimizeHandler.handle({
        testSuite: { tests: generateResult.data.tests },
        algorithm: 'sublinear'
      });

      expect(optimizeResult.success).toBe(true);

      // 4. Generate report
      const reportResult = await reportHandler.handle({
        results: executeResult.data.summary,
        format: 'html'
      });

      expect(reportResult.success).toBe(true);
    });
  });
});