import { spawn } from 'child_process';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';
const __dirname = dirname(fileURLToPath(import.meta.url));
async function testMCPServer() {
console.log('Testing Gemini Google Web Search MCP Server...\n');
const serverPath = join(__dirname, '..', 'dist', 'index.js');
const mcp = spawn('node', [serverPath], {
env: {
...process.env,
GOOGLE_API_KEY: process.env.GOOGLE_API_KEY,
},
stdio: ['pipe', 'pipe', 'pipe'],
});
let responseData = '';
mcp.stdout.on('data', (data) => {
responseData += data.toString();
const lines = responseData.split('\n');
for (let i = 0; i < lines.length - 1; i++) {
const line = lines[i].trim();
if (line) {
try {
const response = JSON.parse(line);
console.log('Response:', JSON.stringify(response, null, 2));
} catch (e) {
// Not JSON, might be server messages
}
}
}
responseData = lines[lines.length - 1];
});
mcp.stderr.on('data', (data) => {
console.error('Server message:', data.toString());
});
mcp.on('error', (error) => {
console.error('Failed to start server:', error);
process.exit(1);
});
// Test 1: List tools
console.log('Test 1: Listing available tools...');
const listToolsRequest = {
jsonrpc: '2.0',
id: 1,
method: 'tools/list',
};
mcp.stdin.write(JSON.stringify(listToolsRequest) + '\n');
// Wait a bit for the response
await new Promise(resolve => setTimeout(resolve, 1000));
// Test 2: Call web search tool
console.log('\nTest 2: Performing web search...');
const searchRequest = {
jsonrpc: '2.0',
id: 2,
method: 'tools/call',
params: {
name: 'google_web_search',
arguments: {
query: 'MCP Model Context Protocol latest news',
},
},
};
mcp.stdin.write(JSON.stringify(searchRequest) + '\n');
// Wait for responses
await new Promise(resolve => setTimeout(resolve, 5000));
// Clean up
mcp.kill();
console.log('\nTest completed.');
}
// Check for API key
if (!process.env.GOOGLE_API_KEY && !process.env.GEMINI_API_KEY) {
console.error('Error: GOOGLE_API_KEY or GEMINI_API_KEY environment variable is required.');
console.error('Get your API key from https://makersuite.google.com/app/apikey');
process.exit(1);
}
testMCPServer().catch(console.error);
