inabox lite (#22867) project is going to introduce different implementations of various services for inabox runtime. It will be very different from regular AMP runtime. We will need specific test coverage for various extensions to make sure they continuously working for inabox.

Ideally, we should have one e2e test for every ad listed in this example page:
https://github.com/ampproject/amphtml/blob/master/examples/amphtml-ads/many-ads.host.html

• introduce AMPHTML ads specific test environments in e2e
• amp-lightbox
• scrollbound animation
• amp-ad-exit
• amp-bind
• amp-video
• amp-fit-text
• Ad choices
• amp-animation