  @Test
  public void addNode_bucketFullTest() throws Exception {

    for (int i = 0; i < KademliaOptions.BUCKET_SIZE; i++) {
      TimeUnit.MILLISECONDS.sleep(10);
      addNode(new Node(ids.get(i), ips[i], 18888, 18888));
    }
    Node lastSeen = nodeTable.addNode(new Node(ids.get(16), ips[16], 18888, 18888));
    Assert.assertTrue(null != lastSeen);
    Assert.assertEquals(ips[15], lastSeen.getHost());
  }