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

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

    assert queue.add("1");

    assert queue.add("2");

    assert queue.add("3");

    assertEquals("1", queue.poll());
    assertEquals("2", queue.poll());
    assertEquals("3", queue.poll());
  }
  /**
   * JUnit.
   *
   * @throws Exception If failed.
   */
  public void testAddUnbounded() throws Exception {
    // Random queue name.
    String queueName = UUID.randomUUID().toString();

    String val = UUID.randomUUID().toString();

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

    assert queue.add(val);

    assert val.equals(queue.poll());
  }