feat: add test case

Author: wardseptember

trpc-registry/trpc-registry-api/src/main/java/com/tencent/trpc/registry/center/AbstractRegistryCenter.java

@@ -111,6 +111,7 @@ public void setPluginConfig(PluginConfig pluginConfig) throws TRpcExtensionExcep
     public void register(RegisterInfo registerInfo) {
         Objects.requireNonNull(registerInfo, "registerInfo can not be null");
         logger.debug("[register] registerInfo: {}", registerInfo);
+
         registeredRegisterInfos.add(registerInfo);
     }
 

trpc-registry/trpc-registry-zookeeper/src/main/java/com/tencent/trpc/registry/transporter/curator/CuratorZookeeperClient.java

@@ -410,6 +410,7 @@ public void unwatch() {
         @Override
         public void process(WatchedEvent event) throws Exception {
             logger.debug("curator watcher process. event: {}", event);
+
             if (childListener == null) {
                 return;
             }