@Test
  public void testMiniZooKeeperWithOneServer() throws Exception {
    HBaseTestingUtil hbt = new HBaseTestingUtil();
    MiniZooKeeperCluster cluster1 = hbt.startMiniZKCluster();
    try {
      assertEquals(0, cluster1.getBackupZooKeeperServerNum());
      assertTrue((cluster1.killCurrentActiveZooKeeperServer() == -1));
    } finally {
      hbt.shutdownMiniZKCluster();
    }
  }
Test that we can start and stop multiple time a cluster with the same HBaseTestingUtility.
hbase-server/src/test/java/org/apache/hadoop/hbase/TestHBaseTestingUtil.java