There has not to my knowledge. As a CouchDB user I'm definitely interested in the results, but it's not clear to me what cluster configuration to test.
1. Code to provision a five cluster database (using Aphyr's Salticid deployment system)
2. Code to do some reads and writes to the database (this is run by Jepsen)
It might be helpful to look through the pull request I submitted to Aphyr for FoundationDB's test, so you can see the pieces: https://github.com/aphyr/jepsen/pull/10
The clustering layer is getting merged into CouchDB and will provide semantics closer to other Dynamo-style systems (e.g. Cassandra, Riak).