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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
import { listMcpServers } from './list.js';
import { loadSettings } from '../../config/settings.js';
import { loadExtensions } from '../../config/extension.js';
import { createTransport } from '@google/gemini-cli-core';
import { Client } from '@modelcontextprotocol/sdk/client/index.js';
vi.mock('../../config/settings.js', () => ({
loadSettings: vi.fn(),
}));
vi.mock('../../config/extension.js', () => ({
loadExtensions: vi.fn(),
}));
vi.mock('@google/gemini-cli-core', () => ({
createTransport: vi.fn(),
MCPServerStatus: {
CONNECTED: 'CONNECTED',
CONNECTING: 'CONNECTING',
DISCONNECTED: 'DISCONNECTED',
},
Storage: vi.fn().mockImplementation((_cwd: string) => ({
getGlobalSettingsPath: () => '/tmp/gemini/settings.json',
getWorkspaceSettingsPath: () => '/tmp/gemini/workspace-settings.json',
getProjectTempDir: () => '/test/home/.gemini/tmp/mocked_hash',
})),
GEMINI_CONFIG_DIR: '.gemini',
getErrorMessage: (e: unknown) => (e instanceof Error ? e.message : String(e)),
}));
vi.mock('@modelcontextprotocol/sdk/client/index.js');
const mockedLoadSettings = loadSettings as vi.Mock;
const mockedLoadExtensions = loadExtensions as vi.Mock;
const mockedCreateTransport = createTransport as vi.Mock;
const MockedClient = Client as vi.Mock;
interface MockClient {
connect: vi.Mock;
ping: vi.Mock;
close: vi.Mock;
}
interface MockTransport {
close: vi.Mock;
}
describe('mcp list command', () => {
let consoleSpy: vi.SpyInstance;
let mockClient: MockClient;
let mockTransport: MockTransport;
beforeEach(() => {
vi.resetAllMocks();
consoleSpy = vi.spyOn(console, 'log').mockImplementation(() => {});
mockTransport = { close: vi.fn() };
mockClient = {
connect: vi.fn(),
ping: vi.fn(),
close: vi.fn(),
};
MockedClient.mockImplementation(() => mockClient);
mockedCreateTransport.mockResolvedValue(mockTransport);
mockedLoadExtensions.mockReturnValue([]);
});
afterEach(() => {
consoleSpy.mockRestore();
});
it('should display message when no servers configured', async () => {
mockedLoadSettings.mockReturnValue({ merged: { mcpServers: {} } });
await listMcpServers();
expect(consoleSpy).toHaveBeenCalledWith('No MCP servers configured.');
});
it('should display different server types with connected status', async () => {
mockedLoadSettings.mockReturnValue({
merged: {
mcpServers: {
'stdio-server': { command: '/path/to/server', args: ['arg1'] },
'sse-server': { url: 'https://example.com/sse' },
'http-server': { httpUrl: 'https://example.com/http' },
},
},
});
mockClient.connect.mockResolvedValue(undefined);
mockClient.ping.mockResolvedValue(undefined);
await listMcpServers();
expect(consoleSpy).toHaveBeenCalledWith('Configured MCP servers:\n');
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'stdio-server: /path/to/server arg1 (stdio) - Connected',
),
);
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'sse-server: https://example.com/sse (sse) - Connected',
),
);
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'http-server: https://example.com/http (http) - Connected',
),
);
});
it('should display disconnected status when connection fails', async () => {
mockedLoadSettings.mockReturnValue({
merged: {
mcpServers: {
'test-server': { command: '/test/server' },
},
},
});
mockClient.connect.mockRejectedValue(new Error('Connection failed'));
await listMcpServers();
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'test-server: /test/server (stdio) - Disconnected',
),
);
});
it('should merge extension servers with config servers', async () => {
mockedLoadSettings.mockReturnValue({
merged: {
mcpServers: { 'config-server': { command: '/config/server' } },
},
});
mockedLoadExtensions.mockReturnValue([
{
config: {
name: 'test-extension',
mcpServers: { 'extension-server': { command: '/ext/server' } },
},
},
]);
mockClient.connect.mockResolvedValue(undefined);
mockClient.ping.mockResolvedValue(undefined);
await listMcpServers();
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'config-server: /config/server (stdio) - Connected',
),
);
expect(consoleSpy).toHaveBeenCalledWith(
expect.stringContaining(
'extension-server: /ext/server (stdio) - Connected',
),
);
});
});
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