Working with Chrome Extensions

Playwright can be used for testing Chrome Extensions.

NOTE Extensions in Chrome / Chromium currently only work in non-headless mode.

The following is code for getting a handle to the background page of an extension whose source is located in ./my-extension:

const { chromium } = require('playwright');

(async () => {

const pathToExtension = require('path').join(__dirname, 'my-extension');

const userDataDir = '/tmp/test-user-data-dir';

const browserContext = await chromium.launchPersistentContext(userDataDir,{

headless: false,

args: [

`--disable-extensions-except=${pathToExtension}`,

`--load-extension=${pathToExtension}`

]

});

const backgroundPage = browserContext.backgroundPages()[0];

// Test the background page as you would any other page.

await browserContext.close();

})();

NOTE It is not yet possible to test extension popups or content scripts.