browser-extension-tests

Per the [Playwright Chrome extensions docs]: load extensions via launchPersistentContext with --disable-extensions-except + --load-extension args. "Google Chrome and Microsoft Edge removed the command-line flags needed to side-load extensions" - use the bundled Chromium browser, not Chrome channel.

When to use

• Testing a browser extension popup page interaction.
• Validating content-script injection on matching URLs.
• Exercising background service worker (alarms, listeners, message routing).
• Verifying chrome.storage reads/writes survive reload.

How to use