TestThreadRankLister lister = new TestThreadRankLister(mBeanServerRegistry).feed(1, "Thread-1", 1000, 500);
lister.runCycle(1000);
lister.clear().feed(1, "Thread-1", 2000, 1500);
lister.runCycle(2000);
ThreadRankItem item = lister.list().get(0);
assertEquals(5.0, item.getAverage(0L, 0, 0), 0.001);
}