@BeforeEach
    public void setup() {
        ConfigService configService = new NacosMockConfigService();
        ShenyuConfig shenyuConfig = new ShenyuConfig();
        nacosSyncDataService = new NacosSyncDataService(configService, null,
                Collections.emptyList(), Collections.emptyList(), Collections.emptyList(), Collections.emptyList(), shenyuConfig);
    }
add test case for {@link NacosSyncDataService}.
shenyu-sync-data-center/shenyu-sync-data-nacos/src/test/java/org/apache/shenyu/sync/data/nacos/NacosSyncDataServiceTest.java