Just as a note: sadly, I still haven't made the videos covering the browser-based tests.  This is actually mirroring functionality within that framework.

I think this is doing something something different (calling APIs), and I think a third test type should use the AJAX-based API calls in our client-side templates / code to test these same API endpoints.  @aronaroman did an initial "save", but no updates.  We can look to add those in the near future!