SSH MCP Server

/** * Story 01: Echo Regression Analysis Test Suite * * This test suite implements comprehensive analysis of the double echo regression * using enhanced Villenele testing infrastructure. It identifies the exact source * of command duplication and understands the interaction between echo handling * and Command State Synchronization functionality. * * CRITICAL: All tests are written TDD-style with failing tests first, then implementation * to make them pass. Uses real MCP server, SSH connections, and WebSocket communications. */ import { JestTestUtilities } from './jest-test-utilities'; import { CommandConfigurationJSON } from './flexible-command-configuration'; // Import the production EchoRegressionAnalyzer from src/ import { EchoRegressionAnalyzer } from '../../../src/echo-regression-analyzer'; describe('Echo Regression Analysis', () => { let testUtils: JestTestUtilities; let analyzer: EchoRegressionAnalyzer; beforeAll(() => { // Setup test environment synchronously before any tests run }); beforeEach(async () => { testUtils = new JestTestUtilities({ enableDetailedLogging: true, enableErrorDiagnostics: true, testTimeout: 30000 }); await testUtils.setupTest('echo-regression-analysis'); analyzer = new EchoRegressionAnalyzer(); // Production class doesn't take testUtils in constructor }); afterEach(async () => { if (testUtils) { await testUtils.cleanupTest(); } }); describe('AC 1.1: Baseline Echo Behavior Documentation', () => { it('should document pre-Command State Sync echo behavior showing single command display', async () => { // Use production class method const currentBehavior = await analyzer.analyzeCurrentEchoBehavior(); expect(currentBehavior.mcpCommandEcho.isDuplicated).toBe(false); expect(currentBehavior.mcpCommandEcho.webSocketMessages.length).toBeGreaterThan(0); }); }); describe('AC 1.2: Current Regression Behavior Characterization', () => { it('should capture exact duplication pattern in browser commands via WebSocket', async () => { const currentBehavior = await analyzer.analyzeCurrentEchoBehavior(); expect(currentBehavior.browserCommandEcho.isDuplicated).toBe(true); expect(currentBehavior.duplicationPattern.affectedCommands).toContain('browser-initiated'); }); }); describe('AC 1.3: Regression Scope and Impact Analysis', () => { it('should validate regression impact across different command types using enhanced Villenele', async () => { const scope = await analyzer.analyzeRegressionScope(); expect(scope.simpleCommands.length).toBeGreaterThan(0); expect(scope.complexCommands.length).toBeGreaterThan(0); expect(scope.analysisTimestamp).toBeGreaterThan(0); }); }); describe('AC 1.4-1.6: Source Code Analysis and Change Detection', () => { it('should identify Command State Sync implementation impact on echo handling', async () => { const impact = await analyzer.analyzeCodeChanges(); expect(impact.sshConnectionManagerChanges).toBeDefined(); expect(impact.webServerManagerChanges).toBeDefined(); expect(Array.isArray(impact.potentialEchoAffectingChanges)).toBe(true); }); }); describe('AC 1.7: Browser Command Echo Pattern Analysis using Villenele', () => { it('should capture exact WebSocket response pattern for browser commands', async () => { const config: CommandConfigurationJSON = { sessionName: 'echo-analysis-browser', workflowTimeout: 30000, preWebSocketCommands: [ 'ssh_connect {"name": "echo-analysis-browser", "host": "localhost", "username": "jsbattig", "keyFilePath": "/home/jsbattig/.ssh/id_ed25519"}' ], postWebSocketCommands: [ {initiator: 'browser', command: 'pwd'}, {initiator: 'browser', command: 'whoami'}, {initiator: 'browser', command: 'echo "test browser command"'} ] }; // Test will use actual WebSocket communication to analyze echo patterns await testUtils.runTerminalHistoryTest(config); const patterns = await analyzer.analyzeBrowserCommandEchoPatterns(); expect(patterns.pwdCommand).toBeDefined(); expect(patterns.whoamiCommand).toBeDefined(); expect(typeof patterns.duplicationTimingMs).toBe('number'); }); }); describe('AC 1.8: MCP Command Echo Pattern Validation using Villenele', () => { it('should validate that MCP commands display correctly without duplication', async () => { const config: CommandConfigurationJSON = { sessionName: 'echo-analysis-mcp', workflowTimeout: 30000, preWebSocketCommands: [ 'ssh_connect {"name": "echo-analysis-mcp", "host": "localhost", "username": "jsbattig", "keyFilePath": "/home/jsbattig/.ssh/id_ed25519"}' ], postWebSocketCommands: [ {initiator: 'mcp-client', command: 'pwd'}, {initiator: 'mcp-client', command: 'whoami'}, {initiator: 'mcp-client', command: 'echo "test mcp command"'} ] }; // Test will verify MCP commands show no duplication await testUtils.runTerminalHistoryTest(config); const validation = await analyzer.analyzeMCPCommandEchoPatterns(); expect(validation.pwdCommand.isDuplicated).toBe(false); expect(validation.whoamiCommand.isDuplicated).toBe(false); expect(validation.consistencyScore).toBe(1.0); }); }); describe('AC 1.9: Mixed Command Scenario Echo Analysis using Villenele', () => { it('should validate echo behavior consistency across command type switches', async () => { const config: CommandConfigurationJSON = { sessionName: 'echo-analysis-mixed', workflowTimeout: 30000, preWebSocketCommands: [ 'ssh_connect {"name": "echo-analysis-mixed", "host": "localhost", "username": "jsbattig", "keyFilePath": "/home/jsbattig/.ssh/id_ed25519"}' ], postWebSocketCommands: [ {initiator: 'browser', command: 'pwd'}, {initiator: 'mcp-client', command: 'whoami'}, {initiator: 'browser', command: 'echo "browser"'}, {initiator: 'mcp-client', command: 'echo "mcp"'} ] }; // Test will analyze mixed browser/MCP command scenarios await testUtils.runTerminalHistoryTest(config); const analysis = await analyzer.analyzeMixedCommandScenarios(); expect(analysis.echoConsistency).toBe(true); expect(Array.isArray(analysis.transitionEffects)).toBe(true); expect(Array.isArray(analysis.commandSequence)).toBe(true); }); }); describe('AC 1.10-1.12: Command State Synchronization Impact Assessment', () => { it('should validate that Command State Sync features do not affect echo behavior', async () => { const gatingAnalysis = await analyzer.analyzeCommandGatingEchoBehavior(); const cancellationAnalysis = await analyzer.analyzeCommandCancellationEchoBehavior(); const fallbackAnalysis = await analyzer.analyzeNuclearFallbackEchoBehavior(); expect(gatingAnalysis.browserCommandsInBuffer.isDuplicated).toBe(true); expect(gatingAnalysis.gatedMCPCommands.isDuplicated).toBe(false); expect(cancellationAnalysis.cancelledBrowserCommands.isDuplicated).toBe(true); expect(fallbackAnalysis.fallbackProcess.introducesEchoDuplication).toBe(false); }); }); describe('AC 1.13: Echo Duplication Mechanism Hypothesis Development', () => { it('should develop specific hypothesis about duplication mechanism with evidence', async () => { const hypothesis = await analyzer.developRootCauseHypothesis(); expect(hypothesis.duplicationMechanism.codePath.length).toBeGreaterThan(0); expect(hypothesis.browserVsMCPDifference).toBeTruthy(); expect(Array.isArray(hypothesis.supportingEvidence)).toBe(true); expect(hypothesis.supportingEvidence.length).toBeGreaterThan(0); }); }); describe('AC 1.14: Fix Complexity Assessment and Risk Analysis', () => { it('should evaluate fix implementation complexity and assess risks', async () => { const complexity = await analyzer.assessFixComplexityAndRisk(); expect(['minimal', 'moderate', 'major']).toContain(complexity.complexityLevel); expect(['low', 'medium', 'high']).toContain(complexity.riskLevel); expect(Array.isArray(complexity.testingRequirements)).toBe(true); }); }); describe('AC 1.15: Analysis Documentation and Validation', () => { it('should provide comprehensive analysis report for fix implementation', async () => { const documentation = await analyzer.generateComprehensiveAnalysisReport(); expect(documentation.beforeAfterBehavior).toBeDefined(); expect(documentation.rootCauseIdentification).toBeDefined(); expect(documentation.detailedHypothesis).toBeTruthy(); expect(documentation.fixApproachRecommendation).toBeDefined(); }); }); });