@Test
  public void testConstructor() throws Exception {
    RoundRobinSchedulerStats stats = new RoundRobinSchedulerStats();
    assertFalse("JMX should not be enabled by default.", stats.isUseJMX());

    stats.setUseJMX(true);
    assertTrue("JMX should be enabled.", stats.isUseJMX());
    assertEquals("Wrong default mavg period.", 300000, stats.getAddMavgPeriod());
    assertNull("Mavg should not be created.", stats.m_addMavg);
    assertEquals("Wrong default mavg sample size.", 360, stats.getAddMavgSampleSize());
  }