Skip to main content
Version: 1.16

Test Generator

Playwright comes with the ability to generate tests out of the box.

Generate tests#

npx playwright codegen wikipedia.org

Run codegen and perform actions in the browser. Playwright will generate the code for the user interactions. codegen will attempt to generate resilient text-based selectors.

Preserve authenticated state#

Run codegen with --save-storage to save cookies and localStorage at the end of the session. This is useful to separately record authentication step and reuse it later in the tests.

npx playwright codegen --save-storage=auth.json# Perform authentication and exit.# auth.json will contain the storage state.

Run with --load-storage to consume previously loaded storage. This way, all cookies and localStorage will be restored, bringing most web apps to the authenticated state.

npx playwright open --load-storage=auth.json my.web.appnpx playwright codegen --load-storage=auth.json my.web.app# Perform actions in authenticated state.

Record using custom setup#

If you would like to use codegen in some non-standard setup (for example, use browserContext.route(url, handler[, options])), it is possible to call page.pause() that will open a separate window with codegen controls.

const { chromium } = require('playwright');
(async () => {  // Make sure to run headed.  const browser = await chromium.launch({ headless: false });
  // Setup context however you like.  const context = await browser.newContext({ /* pass any options */ });  await context.route('**/*', route => route.continue());
  // Pause the page, and start recording manually.  const page = await context.newPage();  await page.pause();})();

Emulate devices#

You can record scripts and tests while emulating a device.

# Emulate iPhone 11.npx playwright codegen --device="iPhone 11" wikipedia.org

Emulate color scheme and viewport size#

You can also record scripts and tests while emulating various browser properties.

# Emulate screen size and color scheme.npx playwright codegen --viewport-size=800,600 --color-scheme=dark twitter.com

Emulate geolocation, language and timezone#

# Emulate timezone, language & location# Once page opens, click the "my location" button to see geolocation in actionnpx playwright codegen --timezone="Europe/Rome" --geolocation="41.890221,12.492348" --lang="it-IT" maps.google.com