@Test
public void testShutdown() throws SchedulerException {

	_clusterSchedulerEngine.start();
	Assert.assertNotNull(
		_mockClusterMasterExecutor.
			getClusterMasterTokenTransitionListener());
	_clusterSchedulerEngine.shutdown();
	Assert.assertNull(
		_mockClusterMasterExecutor.
			getClusterMasterTokenTransitionListener());
}