Auth Storage State

Save a logged-in browser state so later tests can skip login.

Playwright Automation Module 4 Lesson 3
10 min read

What you'll learn

  • Reuse a saved login state.
  • Avoid signing in before every test.
  • Keep auth setup in one place.

Auth Storage State

Save a logged-in browser state so later tests can skip login.

Big Picture

One small picture can make this idea easier to hold.

Fresh login every time

  • Slower runs.
  • More login steps.
  • More chances to fail.
  • Good for login tests.

Saved storage state

  • Faster runs.
  • Less setup.
  • Stable repeat access.
  • Good for signed-in flows.

VerdictUse saved state for most signed-in tests.

How It Moves

Short steps make the flow easier to see.

1

Log in once

Open the app and sign in in a setup test.

2

Save the state

Write cookies and storage to a file.

Reuse it later

Load the file before each test that needs auth.

4

Skip the form

Start the test already signed in.

Step By Step

This is the same idea, stretched across time.

  1. 1

    Create one login step

    Sign in in a setup test.

  2. 2

    Save the session

    Store cookies and storage to a file.

  3. 3

    Load it in tests

    Start each signed-in test with that file.

  4. 4

    Update when expired

    Make a new saved state if login changes.

One Small Model

Think of this like a tiny card you can keep in your pocket.

StorageState

5 fields
cookies:"session cookie"
localStorage:"auth token"
file:"auth.json"
scope:"one browser context"
use:"start logged in"
This file is the saved keycard for the test suite.

Quick Check

Question 1 of 10 correct

What is storage state used for?

Map It

One more picture helps you see where this lesson matters most.

Auth setup choices

Run time
High speed

Manual login

Slow but clear

Best choice

Save once, reuse often

One-off setup

Good for a single auth test

Fastest runs

Many signed-in tests

Low speed
Very isolatedShared session
State reuse
Saved state helps most when many tests need the same login.

Final Quiz

Question 1 of 30 correct

What does storage state save?