Playwright StorageState Tutorial | Login Once & Reuse Session (No Re-Login in Tests!)
In this Playwright tutorial, we will focus on using *Playwright StorageState* to log in only once and reuse the session across all your tests. This avoids repeated logins, speeds up your E2E test run, and simplifies authentication handling.
We will:
✅ Create a setup test that performs login
✅ Save the authentication session as `user.json`
✅ Configure Playwright to reuse the stored StorageState
✅ Run tests without logging in again
This demo uses https://www.saucedemo.com/, but the same approach works for any real application.
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00:00 Intro & The Problem: Why repeated logins slow down tests
00:37 Setting up the Global Auth: Creating auth.setup.ts
02:15 Writing the Login Logic & Generating user.json
04:30 Configuring playwright.config.ts to use StorageState
06:32 Reuse Session Demo: Running tests with automatic login
08:45 Verifying Cookies and LocalStorage persistence
10:20 Troubleshooting: When to clear or regenerate sessions
12:15 Best Practices for CI/CD Pipelines
13:10 Summary & Next Steps in Playwright Mastery
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📌 What is Playwright StorageState?
StorageState allows Playwright to store cookies and localStorage from a logged-in browser session, making future test runs automatically authenticated.
https://playwright.dev/docs/auth
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🔗 Code Used in the Video:
• auth.setup.ts — Login & save StorageState
• playwright.config.ts — Use storageState in test configuration
https://github.com/qadevtips/QA-and-D...
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