anchor.diff:          edis_db:process(0),
           #edis_command{cmd = <<"DEL">>, args = [?KEY | Keys], group = keys, result_type = number}),
     ok;
  -init_per_round(lindex, Keys) ->
  +init_per_round(Fun, Keys) when Fun =:= lindex;
  +                               Fun =:= lrange_s;
  +                               Fun =:= lrange_n ->
     _ =
       edis_db:run(
         edis_db:process(0),
  
positive.code:   edis_db:run(
      edis_db:process(0),
      #edis_command{cmd = <<"LPOP">>, args = [?KEY],
                    timeout = 1000, expire = edis_util:now() + 1,
                    group = lists, result_type = multi_bulk}, 1000).
  
  -spec lpush([binary()]) -> undefined.
  lpush(_Keys) ->
    edis_db:run(
      edis_db:process(0),
      #edis_command{cmd = <<"LPUSH">>, args = [?KEY, ?KEY],
                    timeout = 1000, expire = edis_util:now() + 1,
                    group = lists, result_type = multi_bulk}, 1000).
  
  -spec lpushx([binary()]) -> undefined.
  lpushx(_Keys) ->
    edis_db:run(
      edis_db:process(0),
      #edis_command{cmd = <<"LPUSHX">>, args = [?KEY, ?KEY],
                    timeout = 1000, expire = edis_util:now() + 1,
                    group = lists, result_type = multi_bulk}, 1000).
  
negative.code:          init/0, init_per_testcase/1, init_per_round/2,
           quit/0, quit_per_testcase/1, quit_per_round/2]).
  -export([blpop/1, blpop_nothing/1, brpop/1, brpop_nothing/1, brpoplpush/1, lindex/1, linsert/1,
           llen/1, lpop/1, lpush/1, lpushx/1, lrange_s/1, lrange_n/1]).
  
  %% ====================================================================
  %% External functions
  