I'd like to try this out and have been reading the code but wonder if there are a few bits missing.
First is test_server.hrl line 3 in test/locker_SUITE.erl.
Also the slave module - see below:
4> locker_SUITE:quorum([]).
** exception exit: not_alive
in function slave:start/5 (slave.erl, line 197)
in call from locker_SUITE:setup/1 (locker_SUITE.erl, line 363)
in call from lists:map/2 (lists.erl, line 1224)
in call from locker_SUITE:quorum/1 (locker_SUITE.erl, line 50)