https://github.com/wikimedia/restbase/pull/91 set up [test coverage tracking](https://coveralls.io/r
/wikimedia/restbase) for restbase. It would be great to do the same for restbase-cassandra.

Then, using the results, we can close coverage gaps that are important. I think this includes error handling paths especially in the most commonly used entry points. There will probably also be gaps in index reads and index rebuilds.