Android UI Assist MCP Server

import { execSync } from 'child_process'; // Mock device list output export const mockDeviceListOutput = `List of devices attached emulator-5554 device product:sdk_gphone_x86 model:sdk_gphone_x86 transport_id:1 192.168.1.100:5555 device product:pixel model:pixel transport_id:2`; // Mock empty device list output export const mockEmptyDeviceListOutput = 'List of devices attached'; // Mock unauthorized device list output export const mockUnauthorizedDeviceListOutput = `List of devices attached 192.168.1.100:5555 unauthorized product:pixel model:pixel transport_id:2`; // Mock PNG screenshot data (minimal PNG with 100x200 dimensions) export const mockScreenshotData = Buffer.from([ 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, // PNG signature 0x00, 0x00, 0x00, 0x0D, // IHDR chunk size 0x49, 0x48, 0x44, 0x52, // IHDR chunk type 0x00, 0x00, 0x00, 0x64, // Width: 100 0x00, 0x00, 0x00, 0xC8, // Height: 200 0x08, 0x02, 0x00, 0x00, 0x00, // Bit depth, color type, compression, filter, interlace // Rest of PNG data (simplified for testing) ]); // Mock ADB version output export const mockADBVersionOutput = 'Android Debug Bridge version 1.0.41'; // Mock implementation of execSync export function mockExecSync(command: string, options?: any): Buffer { const cmd = command.replace('adb ', ''); if (cmd === 'version') { return Buffer.from(mockADBVersionOutput); } if (cmd === 'devices -l') { return Buffer.from(mockDeviceListOutput); } if (cmd.startsWith('-s ') && cmd.includes('exec-out screencap -p')) { return mockScreenshotData; } if (cmd === 'exec-out screencap -p') { return mockScreenshotData; } // Throw error for unknown commands const error = new Error(`Command not found: ${command}`) as any; error.status = 1; error.stdout = ''; throw error; } // Setup mock for execSync export function setupADBMock() { const originalExecSync = execSync; // Replace execSync with our mock (execSync as any) = jest.fn(mockExecSync); // Return a function to restore the original return () => { (execSync as any) = originalExecSync; }; } // Setup mock with custom responses export function setupADBMockWithResponses(responses: Record<string, Buffer | string>) { const originalExecSync = execSync; (execSync as any) = jest.fn((command: string, options?: any) => { const cmd = command.replace('adb ', ''); if (responses[cmd]) { const response = responses[cmd]; return typeof response === 'string' ? Buffer.from(response) : response; } // Default to empty buffer for unknown commands return Buffer.from(''); }); // Return a function to restore the original return () => { (execSync as any) = originalExecSync; }; }