LayoutTempstoreRouteEnhancer example

$defaults = [
      'section_storage' => $section_storage->reveal(),
      RouteObjectInterface::ROUTE_OBJECT => $route,
    ];

    $expected = [
      'section_storage' => 'the_return_value',
      RouteObjectInterface::ROUTE_OBJECT => $route,
    ];

    $enhancer = new LayoutTempstoreRouteEnhancer($layout_tempstore_repository->reveal());
    $result = $enhancer->enhance($defaults, new Request());
    $this->assertEquals($expected, $result);
  }

}