### Question:
UpdateHandler extends BaseHandler<CallbackContext> { @Override public ProgressEvent<ResourceModel, CallbackContext> handleRequest( final AmazonWebServicesClientProxy proxy, final ResourceHandlerRequest<ResourceModel> request, final CallbackContext callbackContext, final Logger logger) { return ProgressEvent.<ResourceModel, CallbackContext>builder() .errorCode(HandlerErrorCode.NotUpdatable) .status(OperationStatus.FAILED) .build(); }  @Override ProgressEvent<ResourceModel, CallbackContext> handleRequest(
        final AmazonWebServicesClientProxy proxy,
        final ResourceHandlerRequest<ResourceModel> request,
        final CallbackContext callbackContext,
        final Logger logger);  }### Answer:
@Test public void handleRequest_NotUpdatable() { final UpdateHandler handler = new UpdateHandler(); final ResourceModel model = ResourceModel.builder().build(); final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder() .desiredResourceState(model) .build(); final ProgressEvent<ResourceModel, CallbackContext> response = handler.handleRequest(proxy, request, null, logger); assertThat(response).isNotNull(); assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED); assertThat(response.getCallbackContext()).isNull(); assertThat(response.getCallbackDelaySeconds()).isEqualTo(0); assertThat(response.getResourceModel()).isNull(); assertThat(response.getResourceModels()).isNull(); assertThat(response.getMessage()).isNull(); assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.NotUpdatable); }