class ViewsEntityTestHooks

class ViewsEntityTestHooks {
    
    /**
     * Implements hook_entity_base_field_info().
     */
    public function entityBaseFieldInfo(EntityTypeInterface $entity_type) {
        if ($entity_type->id() == 'entity_test') {
            $definitions['test_text_access'] = BaseFieldDefinition::create('string')->setLabel(t('Test access'))
                ->setTranslatable(FALSE)
                ->setSetting('max_length', 64)
                ->setDisplayOptions('form', [
                'type' => 'string_textfield',
                'weight' => 10,
            ]);
            return $definitions;
        }
    }
    
    /**
     * Implements hook_entity_field_access().
     *
     * @see \Drupal\system\Tests\Entity\FieldAccessTest::testFieldAccess()
     */
    public function entityFieldAccess($operation, FieldDefinitionInterface $field_definition, AccountInterface $account, ?FieldItemListInterface $items = NULL) {
        if ($field_definition->getName() == 'test_text_access') {
            if ($items) {
                if ($items->value == 'no access value') {
                    return AccessResult::forbidden()->addCacheableDependency($items->getEntity());
                }
            }
        }
        // No opinion.
        return AccessResult::neutral();
    }
    
    /**
     * Implements hook_entity_load().
     *
     * @see \Drupal\Tests\views\Kernel\Handler\FieldFieldTest::testSimpleExecute()
     */
    public function entityLoad(array $entities, $entity_type_id) {
        if ($entity_type_id === 'entity_test') {
            // Cast the value of an entity field to be something else than a string so
            // we can check that
            // \Drupal\views\Tests\ViewResultAssertionTrait::assertIdenticalResultsetHelper()
            // takes care of converting all field values to strings.
            foreach ($entities as $entity) {
                $entity->user_id->target_id = (int) $entity->user_id->target_id;
            }
        }
    }

}