MCP Testing Skill

Modern testing strategies for Model Context Protocol (MCP) servers developed in VS Code using TypeScript, Bun, and Vitest.

Unit Testing with Vitest & In-Memory Transport

Setup Minimal Test Environment

import { describe, it, expect, beforeEach } from "vitest";
import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { InMemoryTransport } from "@modelcontextprotocol/sdk/testing/inMemoryTransport.js";
import { RaindropMCPService } from "../src/services/raindropmcp.service.js";

describe("RaindropMCPService Tools", () => {
  let service: RaindropMCPService;
  let transport: InMemoryTransport;
  let client: Client;