/**
   * JUnit.
   *
   * @throws Exception If failed.
   */
  public void testPutGetUnbounded() throws Exception {
    // Random queue name.
    String queueName = UUID.randomUUID().toString();

    IgniteQueue<String> queue = grid(0).queue(queueName, QUEUE_CAPACITY, config(false));

    String thName = Thread.currentThread().getName();

    for (int i = 0; i < 5; i++) {
      queue.put(thName);
      queue.peek();
      queue.take();
    }

    assert queue.isEmpty() : queue.size();
  }
  /**
   * JUnit.
   *
   * @throws Exception If failed.
   */
  public void testPutRemoveUnbounded() throws Exception {
    // Random queue name.
    String queueName = UUID.randomUUID().toString();

    IgniteQueue<String> queue = grid(0).queue(queueName, 0, config(false));

    String thread = Thread.currentThread().getName();

    for (int i = 0; i < QUEUE_CAPACITY; i++) queue.put(thread);

    info("Finished loop 1: " + thread);

    queue.clear();

    info("Cleared queue 1: " + thread);

    assert queue.isEmpty() : "Queue must be empty. " + queue.size();
  }