/**
* Asserts that a config entity can be imported without changing it.
*
* @param \Drupal\Core\Config\Entity\ConfigEntityInterface $entity
* The config entity to test importing.
*/
public function assertConfigEntityImport(ConfigEntityInterface $entity)
{
// Save original config information.
$entity_uuid = $entity->uuid();
$entity_type_id = $entity->getEntityTypeId();
$original_data = $entity->toArray();
// Copy everything to sync.
$this->copyConfig(\Drupal::service('config.storage'), \Drupal::service('config.storage.sync'));
// Delete the configuration from active. Don't worry about side effects of
// deleting config like fields cleaning up field storages. The coming import
// should recreate everything as necessary.
$entity->delete();
$this->configImporter()->reset()->import();
$imported_entity = \Drupal::entityManager()->loadEntityByUuid($entity_type_id, $entity_uuid);
$this->assertIdentical($original_data, $imported_entity->toArray());
}