import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
import { ListToolsRequestSchema, type Tool } from '@modelcontextprotocol/sdk/types.js';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { createSlackMcpServer } from '../index.js';
const mockSearchMessages = vi.fn();
const mockSearchInChannel = vi.fn();
vi.mock('../services/slack-client.js', () => ({
SlackClient: class {
searchMessages = mockSearchMessages;
searchInChannel = mockSearchInChannel;
},
}));
describe('createSlackMcpServer', () => {
const MOCK_TOKEN = 'xoxb-test-token';
let server: McpServer;
beforeEach(() => {
vi.clearAllMocks();
server = createSlackMcpServer(MOCK_TOKEN);
});
it('should create MCP server instance with correct name and version', () => {
expect(server).toBeDefined();
expect(server).toBeInstanceOf(Object);
expect(server.server).toBeDefined();
});
it('should register tools and make them discoverable via tools/list', async () => {
// Get the request handler for tools/list
const requestHandler = server.server['_requestHandlers']?.get('tools/list');
expect(requestHandler).toBeDefined();
// Call the handler to get the list of tools
const request = ListToolsRequestSchema.parse({
method: 'tools/list',
params: {},
});
const result = await requestHandler?.(request, {} as never);
expect(result).toBeDefined();
expect(result?.tools).toHaveLength(2);
// Verify search_messages tool
const searchMessagesTool = result?.tools.find((t: Tool) => t.name === 'search_messages');
expect(searchMessagesTool).toBeDefined();
expect(searchMessagesTool?.description).toContain('Search across all Slack messages');
expect(searchMessagesTool?.inputSchema).toBeDefined();
expect(searchMessagesTool?.inputSchema.type).toBe('object');
expect(searchMessagesTool?.inputSchema.properties).toHaveProperty('query');
expect(searchMessagesTool?.inputSchema.required).toContain('query');
// Verify search_in_channel tool
const searchInChannelTool = result?.tools.find((t: Tool) => t.name === 'search_in_channel');
expect(searchInChannelTool).toBeDefined();
expect(searchInChannelTool?.description).toContain('Search within a specific Slack channel');
expect(searchInChannelTool?.inputSchema).toBeDefined();
expect(searchInChannelTool?.inputSchema.type).toBe('object');
expect(searchInChannelTool?.inputSchema.properties).toHaveProperty('query');
expect(searchInChannelTool?.inputSchema.properties).toHaveProperty('channel_id');
expect(searchInChannelTool?.inputSchema.required).toContain('query');
expect(searchInChannelTool?.inputSchema.required).toContain('channel_id');
});
it('should have tools/call request handler registered', () => {
const requestHandler = server.server['_requestHandlers']?.get('tools/call');
expect(requestHandler).toBeDefined();
});
it('should initialize SlackClient with provided token', () => {
// Verify the server was created which means SlackClient was instantiated
expect(server).toBeDefined();
expect(server.server).toBeDefined();
});
});
