SSH MCP Server

/** * Double Echo Critical Fix Validation Test * * This test validates the critical fix for browser double echo issues. * Tests that characters typed in browser terminal appear exactly ONCE, * with SSH handling ALL terminal display operations. * * ZERO MOCKING - Uses real MCP server, SSH connections, WebSocket communications */ import { JestTestUtilities } from './integration/terminal-history-framework/jest-test-utilities'; import { CommandConfigurationJSON } from './integration/terminal-history-framework/flexible-command-configuration'; describe('Double Echo Critical Fix Validation', () => { let testUtils: JestTestUtilities; const testTimeoutMs = 45000; // Extended timeout for comprehensive testing beforeAll(async () => { testUtils = new JestTestUtilities({ enableDetailedLogging: true, testTimeout: testTimeoutMs }); }, testTimeoutMs); beforeEach(async () => { if (testUtils) { await testUtils.setupTest('double-echo-test'); } }, 15000); afterEach(async () => { if (testUtils) { await testUtils.cleanupTest(); } }, 15000); /** * CRITICAL TEST: Validate no double echo during character typing * This test ensures the browser sends input to SSH without local echo, * and SSH handles ALL terminal display operations. */ test('should not produce double echo when typing commands', async () => { const config: CommandConfigurationJSON = { preWebSocketCommands: [ 'ssh_connect {"name": "double-echo-test", "host": "localhost", "username": "jsbattig", "keyFilePath": "~/.ssh/id_ed25519"}', ], postWebSocketCommands: [ // Test simple commands to verify no double echo in terminal display 'ssh_exec {"sessionName": "double-echo-test", "command": "echo hello"}', 'ssh_exec {"sessionName": "double-echo-test", "command": "pwd"}', 'ssh_exec {"sessionName": "double-echo-test", "command": "whoami"}', ], workflowTimeout: testTimeoutMs, sessionName: 'double-echo-test' }; const result = await testUtils.runTerminalHistoryTest(config); // Validate basic test success expect(result.success).toBe(true); expect(result.concatenatedResponses).toBeDefined(); expect(result.concatenatedResponses.length).toBeGreaterThan(10); const responses = result.concatenatedResponses; // Validate proper CRLF line endings for xterm.js compatibility expect(responses).toMatch(/\r\n/); // Validate that commands appear in terminal history with expected results expect(responses).toContain('hello'); // Echo output expect(responses).toContain('jsbattig'); // Whoami output expect(responses).toMatch(/\/home\/jsbattig/); // Home directory in pwd output // Critical validation: Commands should not be doubled in the output // Count command occurrences - they should appear reasonably (command + result, but not excessively) const echoCount = (responses.match(/echo hello/g) || []).length; const pwdCount = (responses.match(/pwd/g) || []).length; const whoamiCount = (responses.match(/whoami/g) || []).length; // Commands should appear but not be excessively duplicated expect(echoCount).toBeGreaterThan(0); // Should appear at least once expect(echoCount).toBeLessThan(4); // Should not be excessively duplicated expect(pwdCount).toBeGreaterThan(0); // Should appear at least once expect(pwdCount).toBeLessThan(4); // Should not be excessively duplicated expect(whoamiCount).toBeGreaterThan(0); // Should appear at least once expect(whoamiCount).toBeLessThan(4); // Should not be excessively duplicated console.log('✅ Double echo validation passed - commands appear appropriately'); console.log(`Command counts: echo=${echoCount}, pwd=${pwdCount}, whoami=${whoamiCount}`); console.log(`Response length: ${responses.length} characters`); }, testTimeoutMs); /** * COMPREHENSIVE TEST: End-to-end terminal interaction without double echo * Tests complete typing session with mixed character types and operations. */ test('should handle comprehensive terminal interaction without double echo', async () => { const config: CommandConfigurationJSON = { preWebSocketCommands: [ 'ssh_connect {"name": "comprehensive-test", "host": "localhost", "username": "jsbattig", "keyFilePath": "~/.ssh/id_ed25519"}', ], postWebSocketCommands: [ // Comprehensive interaction test 'ssh_exec {"sessionName": "comprehensive-test", "command": "echo \\"Terminal test\\""}', // Quote handling 'ssh_exec {"sessionName": "comprehensive-test", "command": "ls -la | head -3"}', // Pipe command 'ssh_exec {"sessionName": "comprehensive-test", "command": "whoami"}', // Simple command ], workflowTimeout: testTimeoutMs, sessionName: 'comprehensive-test' }; const result = await testUtils.runTerminalHistoryTest(config); // Validate test framework success expect(result.success).toBe(true); expect(result.concatenatedResponses).toBeDefined(); expect(result.concatenatedResponses.length).toBeGreaterThan(20); // Use Terminal History Framework's advanced matchers const responseValidator = testUtils.expectWebSocketMessages(result.concatenatedResponses); responseValidator .toContainCRLF() // CRLF compatibility .toHavePrompts() // Proper prompt handling .toMatchCommandSequence(['echo', 'ls', 'whoami']) // Command sequence validation .toHaveMinimumLength(20) // Adequate response length .validate(); // Additional double echo prevention validation const responses = result.concatenatedResponses; // Count prompt appearances - should not be excessively duplicated const promptMatches = responses.match(/\[.*@.*\s.*\]\$/g) || []; expect(promptMatches.length).toBeGreaterThan(0); // Should have prompts expect(promptMatches.length).toBeLessThan(15); // Should not be excessively duplicated // Validate command execution results expect(responses).toContain('Terminal test'); // Echo output expect(responses).toContain('jsbattig'); // Whoami output expect(responses).toMatch(/total\s+\d+/); // ls -la output pattern console.log('✅ Comprehensive interaction validation passed'); console.log(`Total prompts found: ${promptMatches.length}`); console.log(`Response length: ${responses.length} characters`); }, testTimeoutMs); });