@BeforeEach
    public void setUp() {
        websocketData = new WebsocketData<>();
        websocketData.setEventType(DataEventTypeEnum.MYSELF.name());
        websocketData.setGroupType(ConfigGroupEnum.PLUGIN.name());
        List<PluginData> list = new ArrayList<>(1);
        PluginData pluginData = PluginData.builder().enabled(true).name("shenyu-plugin-grpc")
                .id("shenyu-plugin-grpc").role("admin").build();
        list.add(pluginData);
        websocketData.setData(list);
    }
add test case for {@link ShenyuWebsocketClient}.
shenyu-sync-data-center/shenyu-sync-data-websocket/src/test/java/org/apache/shenyu/plugin/sync/data/websocket/client/ShenyuWebsocketClientTest.java