public function test_prepare_item() {
    $registry = new WP_Block_Type_Registry;
    $settings = array(
      'icon'            => 'text',
      'render_callback' => '__return_null',
    );
    $registry->register( 'fake/line', $settings );
    $block_type = $registry->get_registered( 'fake/line' );
    $endpoint   = new WP_REST_Block_Types_Controller;
    $request    = new WP_REST_Request;
    $request->set_param( 'context', 'edit' );
    $response = $endpoint->prepare_item_for_response( $block_type, $request );
    $this->check_block_type_object( $block_type, $response->get_data(), $response->get_links() );
  }