fix(cli): enable and fix types for MCP command tests (#11385)

packages/cli/src/commands/mcp.test.ts

@@ -17,15 +17,38 @@ describe('mcp command', () => {
     expect(typeof mcpCommand.handler).toBe('function');
   });
 
-  it('should have exactly one option (help flag)', () => {
-    // Test to ensure that the global 'gemini' flags are not added to the mcp command
+  it('should show help when no subcommand is provided', async () => {
     const yargsInstance = yargs();
-    const builtYargs = mcpCommand.builder(yargsInstance);
-    const options = builtYargs.getOptions();
+    (mcpCommand.builder as (y: Argv) => Argv)(yargsInstance);
 
-    // Should have exactly 1 option (help flag)
-    expect(Object.keys(options.key).length).toBe(1);
-    expect(options.key).toHaveProperty('help');
+    const parser = yargsInstance.command(mcpCommand).help();
+
+    // Mock console.log and console.error to catch help output
+    const consoleLogMock = vi
+      .spyOn(console, 'log')
+      .mockImplementation(() => {});
+    const consoleErrorMock = vi
+      .spyOn(console, 'error')
+      .mockImplementation(() => {});
+
+    try {
+      await parser.parse('mcp');
+    } catch (_error) {
+      // yargs might throw an error when demandCommand is not met
+    }
+
+    // Check if help output is shown
+    const helpOutput =
+      consoleLogMock.mock.calls.join('\n') +
+      consoleErrorMock.mock.calls.join('\n');
+    expect(helpOutput).toContain('Manage MCP servers');
+    expect(helpOutput).toContain('Commands:');
+    expect(helpOutput).toContain('add');
+    expect(helpOutput).toContain('remove');
+    expect(helpOutput).toContain('list');
+
+    consoleLogMock.mockRestore();
+    consoleErrorMock.mockRestore();
   });
 
   it('should register add, remove, and list subcommands', () => {
@@ -35,7 +58,7 @@ describe('mcp command', () => {
       version: vi.fn().mockReturnThis(),
     };
 
-    mcpCommand.builder(mockYargs as unknown as Argv);
+    (mcpCommand.builder as (y: Argv) => Argv)(mockYargs as unknown as Argv);
 
     expect(mockYargs.command).toHaveBeenCalledTimes(3);
 

packages/cli/src/commands/mcp/add.test.ts

@@ -4,7 +4,8 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import yargs from 'yargs';
+import { describe, it, expect, vi, type Mock } from 'vitest';
+import yargs, { type Argv } from 'yargs';
 import { addCommand } from './add.js';
 import { loadSettings, SettingScope } from '../../config/settings.js';
 
@@ -31,12 +32,12 @@ vi.mock('../../config/settings.js', async () => {
   };
 });
 
-const mockedLoadSettings = loadSettings as vi.Mock;
+const mockedLoadSettings = loadSettings as Mock;
 
 describe('mcp add command', () => {
-  let parser: yargs.Argv;
-  let mockSetValue: vi.Mock;
-  let mockConsoleError: vi.Mock;
+  let parser: Argv;
+  let mockSetValue: Mock;
+  let mockConsoleError: Mock;
 
   beforeEach(() => {
     vi.resetAllMocks();
@@ -207,7 +208,7 @@ describe('mcp add command', () => {
           .spyOn(process, 'exit')
           .mockImplementation((() => {
             throw new Error('process.exit called');
-          }) as (code?: number) => never);
+          }) as (code?: number | string | null) => never);
 
         await expect(
           parser.parseAsync(`add ${serverName} ${command}`),
@@ -225,7 +226,7 @@ describe('mcp add command', () => {
           .spyOn(process, 'exit')
           .mockImplementation((() => {
             throw new Error('process.exit called');
-          }) as (code?: number) => never);
+          }) as (code?: number | string | null) => never);
 
         await expect(
           parser.parseAsync(`add --scope project ${serverName} ${command}`),

packages/cli/src/commands/mcp/remove.test.ts

@@ -4,8 +4,16 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
-import yargs from 'yargs';
+import {
+  vi,
+  describe,
+  it,
+  expect,
+  beforeEach,
+  afterEach,
+  type Mock,
+} from 'vitest';
+import yargs, { type Argv } from 'yargs';
 import { SettingScope, type LoadedSettings } from '../../config/settings.js';
 import { removeCommand } from './remove.js';
 import * as fs from 'node:fs';
@@ -20,8 +28,8 @@ vi.mock('fs/promises', () => ({
 
 describe('mcp remove command', () => {
   describe('unit tests with mocks', () => {
-    let parser: yargs.Argv;
-    let mockSetValue: vi.Mock;
+    let parser: Argv;
+    let mockSetValue: Mock;
     let mockSettings: Record<string, unknown>;
 
     beforeEach(async () => {
@@ -42,7 +50,9 @@ describe('mcp remove command', () => {
       ).mockReturnValue({
         forScope: () => ({ settings: mockSettings }),
         setValue: mockSetValue,
-      } as Partial<LoadedSettings> as LoadedSettings);
+        workspace: { path: '/path/to/project' },
+        user: { path: '/home/user' },
+      } as unknown as LoadedSettings);
 
       const yargsInstance = yargs([]).command(removeCommand);
       parser = yargsInstance;
@@ -73,7 +83,7 @@ describe('mcp remove command', () => {
     let tempDir: string;
     let settingsDir: string;
     let settingsPath: string;
-    let parser: yargs.Argv;
+    let parser: Argv;
     let cwdSpy: ReturnType<typeof vi.spyOn>;
 
     beforeEach(() => {

packages/cli/tsconfig.json

@@ -17,10 +17,6 @@
     "node_modules",
     "dist",
     // TODO(5691): Fix type errors and remove excludes.
-    "src/commands/mcp.test.ts",
-    "src/commands/mcp/add.test.ts",
-    "src/commands/mcp/list.test.ts",
-    "src/commands/mcp/remove.test.ts",
     "src/config/config.integration.test.ts",
     "src/config/config.test.ts",
     "src/config/extension.test.ts",