You will need a Riak cluster running on 127.0.0.1:10017 (or configure your clusters's endpoint on the src/test_lib.erl module).
The configured nodes backend is leveldb (to enable 2i).
This project is a simplification of another one in which some Riak MapReduce operations are performed on a cluster, but for soe reason they fail.
One of that operation's implementation , that will serve as example, is coded under src/test_lib.erl. That code has been copied to and successfully tested using an erlang script. But when run as part of a rebar3 lib project like this one it fails.
The script loads some required libraries, all included by riak-erlang-client using code:add_path (loading those libraries from a local copy of riak-erlang-client) and the rebar3 library just sets riak-erlang-client as a rebar dependency.
Run the MapReduce operation:
$ make test
With verbose
$ make vtest