function let(CategoryManager $categoryManager, CategoryRepositoryInterface $categoryRepository)
 {
     $categoryRepository->findBy(['parent' => null])->willReturn(['this', 'is', 'a', 'category', 'tree']);
     $categoryManager->getEntityRepository()->willReturn($categoryRepository);
     $this->beConstructedWith($categoryManager, 'Pim\\Bundle\\CatalogBundle\\Entity\\Category', 'Pim\\Bundle\\EnrichBundle\\MassEditAction\\Operation\\Classify');
 }
 /**
  * {@inheritDoc}
  */
 public function buildView(FormView $view, FormInterface $form, array $options)
 {
     $view->vars['trees'] = $this->categoryRepository->findBy(['parent' => null]);
 }