[Edited] Refer to the latest acceptance criteria.

We want to ensure that if you have AMP installed as the sole plugin in a WordPress install that everything you can do in a vanilla WordPress site is compatible with AMP: every embed that a user can add to a post, every inserted media, every widget added to a sidebar, and even the various template parts that WordPress outputs (e.g. wp_nav_menu(), get_search_form(), and comments_template()). This can be paired with Theme Unit Test sample data and validation checklists.

If we do this right, we can then incorporate the test data into the build process to make sure that we don't break AMP compatibility with anything WordPress does.

This will also need to be done for Gutenberg blocks.