anchor.diff:  %% ===================================================================
   
   
  +% -define(TEST, 1).
   -ifdef(TEST).
   -compile({no_auto_import, [put/2]}).
   -include_lib("eunit/include/eunit.hrl").
  
positive.code:         [] ->
              register(Name, val, Value, Pid),
              {reply, true, State};
          [{_, Pid}|_] -> 
              {reply, {false, Pid}, State}
      end;
  
  handle_call({wait_reg, Name, Value, Pid}, {FromPid, FromRef}, State) ->
  
negative.code: %% -------------------------------------------------------------------
  %%
  %% Copyright (c) 2014 Carlos Gonzalez Florido.  All Rights Reserved.
  %%
  