Powertools MCP Search Server

import { Client } from '@modelcontextprotocol/sdk/client/index.js'; import { InMemoryTransport } from '@modelcontextprotocol/sdk/inMemory.js'; import { CallToolResultSchema, ListToolsResultSchema, } from '@modelcontextprotocol/sdk/types.js'; import { beforeEach, describe, expect, it } from 'vitest'; import { POWERTOOLS_BASE_URL } from '../../src/constants.ts'; import { createServer } from '../../src/server.ts'; describe('MCP Server e2e (sdk)', () => { let server: ReturnType<typeof createServer>; let client: Client; let clientTransport: ReturnType<typeof InMemoryTransport.createLinkedPair>[0]; let serverTransport: ReturnType<typeof InMemoryTransport.createLinkedPair>[1]; beforeEach(async () => { server = createServer(); client = new Client({ name: 'test client', version: '1.0' }); [clientTransport, serverTransport] = InMemoryTransport.createLinkedPair(); await Promise.all([ server.connect(serverTransport), client.connect(clientTransport), ]); }); it('returns the list of tools available', async () => { // Act const response = await client.request( { method: 'tools/list', params: {} }, ListToolsResultSchema ); // Assess expect(Array.isArray(response.tools)).toBe(true); expect(response.tools[0].name).toBe('search_docs'); expect(response.tools[1].name).toBe('fetch_doc_page'); }); it('uses the search tool', async () => { // Act const response = await client.request( { method: 'tools/call', params: { name: 'search_docs', arguments: { search: 'metrics', runtime: 'typescript', version: 'latest', }, }, }, CallToolResultSchema ); // Assess expect(response.content[0].type).toBe('text'); expect(response.content[0].text).toBeDefined(); expect(response.content).toHaveNthResultWith(1, { title: 'features/metrics/', score: expect.any(Number), url: expect.stringContaining( `${POWERTOOLS_BASE_URL}/typescript/latest/features/metrics/` ), }); }); it('uses the fetch_doc_page tool', async () => { // Act const response = await client.request( { method: 'tools/call', params: { name: 'fetch_doc_page', arguments: { url: `${POWERTOOLS_BASE_URL}/typescript/latest/features/metrics/`, }, }, }, CallToolResultSchema ); // Assess expect(response.content[0].type).toBe('text'); expect(response.content[0].text).toContain('Metrics'); }); });