public function test_preview_deleted() {
    do_action( 'customize_register', $this->wp_customize );

    $menu_id                        = wp_update_nav_menu_object(
      0,
      wp_slash(
        array(
          'menu-name'   => 'Name 1 \\o/',
          'description' => 'Description 1 \\o/',
          'parent'      => 0,
        )
      )
    );
    $setting_id                     = "nav_menu[$menu_id]";
    $setting                        = new WP_Customize_Nav_Menu_Setting( $this->wp_customize, $setting_id );
    $nav_menu_options               = $this->get_nav_menu_items_option();
    $nav_menu_options['auto_add'][] = $menu_id;
    update_option( 'nav_menu_options', $nav_menu_options );

    $nav_menu_options = $this->get_nav_menu_items_option();
    $this->assertContains( $menu_id, $nav_menu_options['auto_add'] );

    $this->wp_customize->set_post_value( $setting_id, false );

    $this->assertIsArray( $setting->value() );
    $this->assertIsObject( wp_get_nav_menu_object( $menu_id ) );
    $setting->preview();
    $this->assertFalse( $setting->value() );
    $this->assertFalse( wp_get_nav_menu_object( $menu_id ) );

    $nav_menu_options = $this->get_nav_menu_items_option();
    $this->assertNotContains( $menu_id, $nav_menu_options['auto_add'] );
  }