anchor.diff:  always_successful_iterative_find_peers(_, Key) ->
       [?FAKE_PEER(Key)].
   
  -put_contacts(KbucketPid, []) ->
  +put_contacts(_KbucketPid, []) ->
       ok;
   put_contacts(KbucketPid, [Contact | Contacts]) ->
       ok = kbucket:put(KbucketPid, Contact),
  
positive.code: -include_lib("eunit/include/eunit.hrl").
  -include_lib("test_macro.hrl").
  
  -define(PEER_ID, 13).
  -define(ID_LENGTH, 4).
  -define(ALPHA, 3).
  
  % build a fake peer with the specified ID and fixed (dummy) PID
  -define(FAKE_PEER(ID), {list_to_pid("<0.255.255>"), ID}).
  
negative.code: 
      [?_assertEqual([?TWO_PEER_2, ?TWO_PEER_1, ?ONE_PEER_1], ClosestContacts)].
  
  should_search_a_key_within_each_bucket_and_refresh_its_content({KbucketPid, _}) ->
      meck:expect(peer, iterative_find_peers, fun always_successful_iterative_find_peers/2),
  
      kbucket:refresh(KbucketPid),
  