@Test
public void testIsTracked() {

  assertFalse(statistics.isTracked(null));
  assertFalse(statistics.isTracked(NO_SUCH_OP));
  final Iterator<LongStatistic> iter = statistics.getLongStatistics();
  while (iter.hasNext()) {
    final LongStatistic longStatistic = iter.next();
    assertTrue(statistics.isTracked(longStatistic.getName()));
  }
}