How do I implement a shared login session across multiple tests in @playwright/test?


Sure, let's get you set up with a shared login session for your @playwright/test tests.

First, you'll need to create an auth.setup.ts file. This file will handle the authentication and save the state for all your tests.

Here's a basic example of what that might look like:

import { test, expect } from '@playwright/test';

test('login', async ({ page }) => {
  await page.goto('https://ray.run/login');
  await page.fill('input[name="username"]', 'your-username');
  await page.fill('input[name="password"]', 'your-password');
  await page.click('button[type="submit"]');
  const storage = await context.storageState();
  fs.writeFileSync('playwright/.auth/state.json', JSON.stringify(storage));

In this code, we're using Playwright's page object model to fill in the login form and click the submit button. We then save the authentication state to a JSON file.

Next, in each test file or group where you want to use this shared account, set the storageState property with the path to the JSON file.

import { test, expect } from '@playwright/test';
import * as fs from 'fs';

  storageState: JSON.parse(fs.readFileSync('playwright/.auth/state.json', 'utf8')),

test('authenticated test', async ({ page }) => {
  // your test code here

This way, each test starts with an authenticated session, saving you the time of logging in for each test.

Remember, if your tests modify server-side state or if your authentication is browser-specific, using shared accounts may not be appropriate. In such cases, use multiple BrowserContexts and Pages with different storage states in the same test.


Thank you!
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Rayrun is a community for QA engineers. I am constantly looking for new ways to add value to people learning Playwright and other browser automation frameworks. If you have feedback, email luc@ray.run.