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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { getOauthClient, getCachedGoogleAccountId } from './oauth2.js';
import { OAuth2Client } from 'google-auth-library';
import * as fs from 'fs';
import * as path from 'path';
import http from 'http';
import open from 'open';
import crypto from 'crypto';
import * as os from 'os';
vi.mock('os', async (importOriginal) => {
const os = await importOriginal<typeof import('os')>();
return {
...os,
homedir: vi.fn(),
};
});
vi.mock('google-auth-library');
vi.mock('http');
vi.mock('open');
vi.mock('crypto');
// Mock fetch globally
global.fetch = vi.fn();
describe('oauth2', () => {
let tempHomeDir: string;
beforeEach(() => {
tempHomeDir = fs.mkdtempSync(
path.join(os.tmpdir(), 'gemini-cli-test-home-'),
);
vi.mocked(os.homedir).mockReturnValue(tempHomeDir);
});
afterEach(() => {
fs.rmSync(tempHomeDir, { recursive: true, force: true });
});
it('should perform a web login', async () => {
const mockAuthUrl = 'https://example.com/auth';
const mockCode = 'test-code';
const mockState = 'test-state';
const mockTokens = {
access_token: 'test-access-token',
refresh_token: 'test-refresh-token',
};
const mockGenerateAuthUrl = vi.fn().mockReturnValue(mockAuthUrl);
const mockGetToken = vi.fn().mockResolvedValue({ tokens: mockTokens });
const mockSetCredentials = vi.fn();
const mockGetAccessToken = vi
.fn()
.mockResolvedValue({ token: 'mock-access-token' });
const mockRefreshAccessToken = vi.fn().mockImplementation((callback) => {
// Mock the callback-style refreshAccessToken method
const mockTokensWithIdToken = {
access_token: 'test-access-token',
refresh_token: 'test-refresh-token',
id_token:
'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ0ZXN0LWdvb2dsZS1hY2NvdW50LWlkLTEyMyJ9.signature', // Mock JWT with sub: test-google-account-id-123
};
callback(null, mockTokensWithIdToken);
});
const mockVerifyIdToken = vi.fn().mockResolvedValue({
getPayload: () => ({
sub: 'test-google-account-id-123',
aud: 'test-audience',
iss: 'https://accounts.google.com',
}),
});
const mockOAuth2Client = {
generateAuthUrl: mockGenerateAuthUrl,
getToken: mockGetToken,
setCredentials: mockSetCredentials,
getAccessToken: mockGetAccessToken,
refreshAccessToken: mockRefreshAccessToken,
verifyIdToken: mockVerifyIdToken,
credentials: mockTokens,
on: vi.fn(),
} as unknown as OAuth2Client;
vi.mocked(OAuth2Client).mockImplementation(() => mockOAuth2Client);
vi.spyOn(crypto, 'randomBytes').mockReturnValue(mockState as never);
vi.mocked(open).mockImplementation(async () => ({}) as never);
// Mock the UserInfo API response
vi.mocked(global.fetch).mockResolvedValue({
ok: true,
json: vi.fn().mockResolvedValue({ id: 'test-google-account-id-123' }),
} as unknown as Response);
let requestCallback!: http.RequestListener<
typeof http.IncomingMessage,
typeof http.ServerResponse
>;
let serverListeningCallback: (value: unknown) => void;
const serverListeningPromise = new Promise(
(resolve) => (serverListeningCallback = resolve),
);
let capturedPort = 0;
const mockHttpServer = {
listen: vi.fn((port: number, callback?: () => void) => {
capturedPort = port;
if (callback) {
callback();
}
serverListeningCallback(undefined);
}),
close: vi.fn((callback?: () => void) => {
if (callback) {
callback();
}
}),
on: vi.fn(),
address: () => ({ port: capturedPort }),
};
vi.mocked(http.createServer).mockImplementation((cb) => {
requestCallback = cb as http.RequestListener<
typeof http.IncomingMessage,
typeof http.ServerResponse
>;
return mockHttpServer as unknown as http.Server;
});
const clientPromise = getOauthClient();
// wait for server to start listening.
await serverListeningPromise;
const mockReq = {
url: `/oauth2callback?code=${mockCode}&state=${mockState}`,
} as http.IncomingMessage;
const mockRes = {
writeHead: vi.fn(),
end: vi.fn(),
} as unknown as http.ServerResponse;
await requestCallback(mockReq, mockRes);
const client = await clientPromise;
expect(client).toBe(mockOAuth2Client);
expect(open).toHaveBeenCalledWith(mockAuthUrl);
expect(mockGetToken).toHaveBeenCalledWith({
code: mockCode,
redirect_uri: `http://localhost:${capturedPort}/oauth2callback`,
});
expect(mockSetCredentials).toHaveBeenCalledWith(mockTokens);
// Verify Google Account ID was cached
const googleAccountIdPath = path.join(
tempHomeDir,
'.gemini',
'google_account_id',
);
expect(fs.existsSync(googleAccountIdPath)).toBe(true);
const cachedGoogleAccountId = fs.readFileSync(googleAccountIdPath, 'utf-8');
expect(cachedGoogleAccountId).toBe('test-google-account-id-123');
// Verify the getCachedGoogleAccountId function works
expect(getCachedGoogleAccountId()).toBe('test-google-account-id-123');
});
});
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