ActivityPub Test Suite?

The ActivityPub spec says there is supposed to be a test suite at:
https://test.activitypub.rocks/ However, that is no longer the case.

   - Does the test suite still exist? If so, where is it?
   - Is/Was the test suite's coverage, effectiveness, operation, etc.
   satisfactory? If not, why not?
   - Would it be useful to either improve or replace the old test suite? If
   so, in what ways?
   - Implementation reports, based on the old test suite are provided at:
   https://activitypub.rocks/implementation-report/ . Should this list, or
   a copy, be maintained within the SWICG GitHub repository? If not, why not?
   - Was there ever a test suite for ActivityStreams?
   - Is anyone willing to work on developing a new/improved AP test suite?
   - If a new or improved test suite were to be developed, what non-obvious
   requirements should it satisfy?

bob wyman