* Test add multiple nodes
*/
changeMap.clear();
changeMap.put("127.0.0.1", brkNode.toString().getBytes());
changeMap.put("127.0.0.1/loading", loadingNode.toString().getBytes());
brokerFarm.onDataChanged("/broker", changeMap);
assertEquals(brkNode, brokerFarm.getBrokerByHost("127.0.0.1"));
assertEquals(loadingNode, brokerFarm.getAllLoading().get("127.0.0.1"));
assertEquals(1, brokerFarm.getBrokerCount());
/**