displayMethodTests example

$this->controller = $this->container->get('entity_type.manager')->getStorage('view');

    // Confirm that an info array has been returned.     $this->assertInstanceOf(EntityTypeInterface::class, $this->entityType);

    // CRUD tests.     $this->loadTests();
    $this->createTests();
    $this->displayTests();

    // Helper method tests     $this->displayMethodTests();
  }

  /** * Tests loading configuration entities. */
  protected function loadTests() {
    $view = View::load('test_view_storage');
    $data = $this->config('views.view.test_view_storage')->get();

    // Confirm that an actual view object is loaded and that it returns all of     // expected properties.