anchor.diff:                                 test_quadruple_join
                                  ]},
        {join_and_leave_tests, [sequence], [
  -                                         test_quadruple_join_single_leave
  +                                         test_quadruple_join_single_leave,
  +                                         test_quadruple_join_double_leave,
  +                                         test_quadruple_join_triple_leave,
  +                                         test_quadruple_join_quadruple_leave
                                            ]}
       ].
   
   all() ->
       [
  -     {group, tester_tests},
  -     {group, join_tests},
  -     {group, join_and_leave_tests}
  +%     {group, tester_tests},
  +%     {group, join_tests},
  +%     {group, join_and_leave_tests}
        ].
   
   suite() -> [ {timetrap, {seconds, 120}} ].
  
positive.code: % leave helper
  %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  leave_until(TargetSize, TargetSize) ->
      ok;
  
negative.code:             unittest_helper:stop_ring(),
              {priv_dir, PrivDir} = lists:keyfind(priv_dir, 1, Config),
              unittest_helper:make_ring(1, [{config, [{log_path, PrivDir},
                                                      {leases, true},
                                                      {leases_gc, false}]}]),
              Config
      end.
  
  