Recommended Testing Frameworks for Extension Rendering

[Jacob Lynch]

Hi, 

I'm creating an extension that modifies the DOM of some pages to add information to a shopping experience. I want to automate tests to see if the button loads on different pages. Are there frameworks to do this? One option I thought about is saving the HTML of a page I'm looking to test and writing tests to render the content on these pages. Any help would be greatly appreciated!

Thanks!

[mur...@influesolutions.com]

This is interesting. I would like to know too.

[Ardy Naghshineh]

I would write some Jest tests and use Puppeteer to spin up a Chromium with my extension setup on it. Then you can navigate to different pages on the target site and check if the extension is working as intended.

You can use jest-image-snapshots too to do some visual testing.

[Simeon Vincent]

One notable drawback of Puppeteer is that you can't script Chrome UI, so you won't be able to test interactions with your extension's browser action. If you're okay with that limitation, then Ardy's advice sounds good to me.

Cheers,

Simeon - @dotproto

Developer Advocate for Chrome Extensions

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[Anurima Sharma]

Could one of you explain how you have been able to load chrome extensions with Puppeteer, as I have not had any success? I have tried launching Puppeteer with:

"--disable-extensions-except=/build",

"--load-extension=/build",

but no luck. Any other suggestions?