CloudAppConfigurationService { public void remove(final String appName) { regCenter.remove(CloudAppConfigurationNode.getRootNodePath(appName)); }  void add(final CloudAppConfigurationPOJO appConfig); void update(final CloudAppConfigurationPOJO appConfig); Optional<CloudAppConfigurationPOJO> load(final String appName); Collection<CloudAppConfigurationPOJO> loadAll(); void remove(final String appName);  }
@Test public void assertRemove() { configService.remove("test_app"); verify(regCenter).remove("/config/app/test_app"); }