We do deterministic simulation testing
https://s2.dev/blog/dst https://s2.dev/blog/linearizability
We have also adopted Antithesis for a more thorough DST environment, and plan to do more with it.
One day we will engage Kyle to Jepsen, too. I'm not sure when though.
NATS claims to use Antithesis as well, so that's nothing comparatively speaking
I guess that's better than nothing. But now I'm unsure what your original comment was about, if your project doesn't use Jepsen for testing to "prove" it works fine, how is your project relevant to bring up on a submission about a Jepsen test of some other software?
If everyone who was making a database/message queue/whatever distributed system shared their projects on every Jepsen submission, we'd never have any discussions about the actual software in question.