ContentEntityCloneTest.php in Drupal 8

Namespace

Drupal\KernelTests\Core\Entity

File

core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php

<?php

namespace Drupal\KernelTests\Core\Entity;

use Drupal\Component\Render\FormattableMarkup;
use Drupal\entity_test\Entity\EntityTestMul;
use Drupal\entity_test\Entity\EntityTestMulRev;
use Drupal\language\Entity\ConfigurableLanguage;

/**
 * Tests proper cloning of content entities.
 *
 * @group Entity
 */
class ContentEntityCloneTest extends EntityKernelTestBase {

  /**
   * {@inheritdoc}
   */
  public static $modules = [
    'language',
    'entity_test',
  ];

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();

    // Enable an additional language.
    ConfigurableLanguage::createFromLangcode('de')
      ->save();
    $this
      ->installEntitySchema('entity_test_mul');
    $this
      ->installEntitySchema('entity_test_mulrev');
  }

  /**
   * Tests if entity references on fields are still correct after cloning.
   */
  public function testFieldEntityReferenceAfterClone() {
    $user = $this
      ->createUser();

    // Create a test entity.
    $entity = EntityTestMul::create([
      'name' => $this
        ->randomString(),
      'user_id' => $user
        ->id(),
      'language' => 'en',
    ]);
    $translation = $entity
      ->addTranslation('de');

    // Initialize the fields on the translation objects in order to check that
    // they are properly cloned and have a reference to the cloned entity
    // object and not to the original one.
    $entity
      ->getFields();
    $translation
      ->getFields();
    $clone = clone $translation;
    $this
      ->assertEqual($entity
      ->getTranslationLanguages(), $clone
      ->getTranslationLanguages(), 'The entity and its clone have the same translation languages.');
    $default_langcode = $entity
      ->getUntranslated()
      ->language()
      ->getId();
    foreach (array_keys($clone
      ->getTranslationLanguages()) as $langcode) {
      $translation = $clone
        ->getTranslation($langcode);
      foreach ($translation
        ->getFields() as $field_name => $field) {
        if ($field
          ->getFieldDefinition()
          ->isTranslatable()) {
          $args = [
            '%field_name' => $field_name,
            '%langcode' => $langcode,
          ];
          $this
            ->assertEqual($langcode, $field
            ->getEntity()
            ->language()
            ->getId(), new FormattableMarkup('Translatable field %field_name on translation %langcode has correct entity reference in translation %langcode after cloning.', $args));
          $this
            ->assertSame($translation, $field
            ->getEntity(), new FormattableMarkup('Translatable field %field_name on translation %langcode has correct reference to the cloned entity object.', $args));
        }
        else {
          $args = [
            '%field_name' => $field_name,
            '%langcode' => $langcode,
            '%default_langcode' => $default_langcode,
          ];
          $this
            ->assertEqual($default_langcode, $field
            ->getEntity()
            ->language()
            ->getId(), new FormattableMarkup('Non translatable field %field_name on translation %langcode has correct entity reference in the default translation %default_langcode after cloning.', $args));
          $this
            ->assertSame($translation
            ->getUntranslated(), $field
            ->getEntity(), new FormattableMarkup('Non translatable field %field_name on translation %langcode has correct reference to the cloned entity object in the default translation %default_langcode.', $args));
        }
      }
    }
  }

  /**
   * Tests that the flag for enforcing a new entity is not shared.
   */
  public function testEnforceIsNewOnClonedEntityTranslation() {

    // Create a test entity.
    $entity = EntityTestMul::create([
      'name' => $this
        ->randomString(),
      'language' => 'en',
    ]);
    $entity
      ->save();
    $entity_translation = $entity
      ->addTranslation('de');
    $entity
      ->save();

    // The entity is not new anymore.
    $this
      ->assertFalse($entity_translation
      ->isNew());

    // The clone should not be new either.
    $clone = clone $entity_translation;
    $this
      ->assertFalse($clone
      ->isNew());

    // After forcing the clone to be new only it should be flagged as new, but
    // the original entity should not.
    $clone
      ->enforceIsNew();
    $this
      ->assertTrue($clone
      ->isNew());
    $this
      ->assertFalse($entity_translation
      ->isNew());
  }

  /**
   * Tests if the entity fields are properly cloned.
   */
  public function testClonedEntityFields() {
    $user = $this
      ->createUser();

    // Create a test entity.
    $entity = EntityTestMul::create([
      'name' => $this
        ->randomString(),
      'user_id' => $user
        ->id(),
      'language' => 'en',
    ]);
    $entity
      ->addTranslation('de');
    $entity
      ->save();
    $fields = array_keys($entity
      ->getFieldDefinitions());

    // Reload the entity, clone it and check that both entity objects reference
    // different field instances.
    $entity = $this
      ->reloadEntity($entity);
    $clone = clone $entity;
    $different_references = TRUE;
    foreach ($fields as $field_name) {
      if ($entity
        ->get($field_name) === $clone
        ->get($field_name)) {
        $different_references = FALSE;
      }
    }
    $this
      ->assertTrue($different_references, 'The entity object and the cloned entity object reference different field item list objects.');

    // Reload the entity, initialize one translation, clone it and check that
    // both entity objects reference different field instances.
    $entity = $this
      ->reloadEntity($entity);
    $entity
      ->getTranslation('de');
    $clone = clone $entity;
    $different_references = TRUE;
    foreach ($fields as $field_name) {
      if ($entity
        ->get($field_name) === $clone
        ->get($field_name)) {
        $different_references = FALSE;
      }
    }
    $this
      ->assertTrue($different_references, 'The entity object and the cloned entity object reference different field item list objects if the entity is cloned after an entity translation has been initialized.');
  }

  /**
   * Tests that the flag for enforcing a new revision is not shared.
   */
  public function testNewRevisionOnCloneEntityTranslation() {

    // Create a test entity.
    $entity = EntityTestMulRev::create([
      'name' => $this
        ->randomString(),
      'language' => 'en',
    ]);
    $entity
      ->save();
    $entity
      ->addTranslation('de');
    $entity
      ->save();

    // Reload the entity as ContentEntityBase::postCreate() forces the entity to
    // be a new revision.
    $entity = EntityTestMulRev::load($entity
      ->id());
    $entity_translation = $entity
      ->getTranslation('de');

    // The entity is not set to be a new revision.
    $this
      ->assertFalse($entity_translation
      ->isNewRevision());

    // The clone should not be set to be a new revision either.
    $clone = clone $entity_translation;
    $this
      ->assertFalse($clone
      ->isNewRevision());

    // After forcing the clone to be a new revision only it should be flagged
    // as a new revision, but the original entity should not.
    $clone
      ->setNewRevision();
    $this
      ->assertTrue($clone
      ->isNewRevision());
    $this
      ->assertFalse($entity_translation
      ->isNewRevision());
  }

  /**
   * Tests modifications on entity keys of a cloned entity object.
   */
  public function testEntityKeysModifications() {

    // Create a test entity with a translation, which will internally trigger
    // entity cloning for the new translation and create references for some of
    // the entity properties.
    $entity = EntityTestMulRev::create([
      'name' => 'original-name',
      'uuid' => 'original-uuid',
      'language' => 'en',
    ]);
    $entity
      ->addTranslation('de');
    $entity
      ->save();

    // Clone the entity.
    $clone = clone $entity;

    // Alter a non-translatable and a translatable entity key fields of the
    // cloned entity and assert that retrieving the value through the entity
    // keys local cache will be different for the cloned and the original
    // entity.
    // We first have to call the ::uuid() and ::label() method on the original
    // entity as it is going to cache the field values into the $entityKeys and
    // $translatableEntityKeys properties of the entity object and we want to
    // check that the cloned and the original entity aren't sharing the same
    // reference to those local cache properties.
    $uuid_field_name = $entity
      ->getEntityType()
      ->getKey('uuid');
    $this
      ->assertFalse($entity
      ->getFieldDefinition($uuid_field_name)
      ->isTranslatable());
    $clone->{$uuid_field_name}->value = 'clone-uuid';
    $this
      ->assertEquals('original-uuid', $entity
      ->uuid());
    $this
      ->assertEquals('clone-uuid', $clone
      ->uuid());
    $label_field_name = $entity
      ->getEntityType()
      ->getKey('label');
    $this
      ->assertTrue($entity
      ->getFieldDefinition($label_field_name)
      ->isTranslatable());
    $clone->{$label_field_name}->value = 'clone-name';
    $this
      ->assertEquals('original-name', $entity
      ->label());
    $this
      ->assertEquals('clone-name', $clone
      ->label());
  }

  /**
   * Tests the field values after serializing an entity and its clone.
   */
  public function testFieldValuesAfterSerialize() {

    // Create a test entity with a translation, which will internally trigger
    // entity cloning for the new translation and create references for some of
    // the entity properties.
    $entity = EntityTestMulRev::create([
      'name' => 'original',
      'language' => 'en',
    ]);
    $entity
      ->addTranslation('de');
    $entity
      ->save();

    // Clone the entity.
    $clone = clone $entity;

    // Alter the name field value of the cloned entity object.
    $clone
      ->setName('clone');

    // Serialize the entity and the cloned object in order to destroy the field
    // objects and put the field values into the entity property $values, so
    // that on accessing a field again it will be newly created with the value
    // from the $values property.
    serialize($entity);
    serialize($clone);

    // Assert that the original and the cloned entity both have different names.
    $this
      ->assertEquals('original', $entity
      ->getName());
    $this
      ->assertEquals('clone', $clone
      ->getName());
  }

  /**
   * Tests changing the default revision flag.
   */
  public function testDefaultRevision() {

    // Create a test entity with a translation, which will internally trigger
    // entity cloning for the new translation and create references for some of
    // the entity properties.
    $entity = EntityTestMulRev::create([
      'name' => 'original',
      'language' => 'en',
    ]);
    $entity
      ->addTranslation('de');
    $entity
      ->save();

    // Assert that the entity is in the default revision.
    $this
      ->assertTrue($entity
      ->isDefaultRevision());

    // Clone the entity and modify its default revision flag.
    $clone = clone $entity;
    $clone
      ->isDefaultRevision(FALSE);

    // Assert that the clone is not in default revision, but the original entity
    // is still in the default revision.
    $this
      ->assertFalse($clone
      ->isDefaultRevision());
    $this
      ->assertTrue($entity
      ->isDefaultRevision());
  }

  /**
   * Tests references of entity properties after entity cloning.
   */
  public function testEntityPropertiesModifications() {

    // Create a test entity with a translation, which will internally trigger
    // entity cloning for the new translation and create references for some of
    // the entity properties.
    $entity = EntityTestMulRev::create([
      'name' => 'original',
      'language' => 'en',
    ]);
    $translation = $entity
      ->addTranslation('de');
    $entity
      ->save();

    // Clone the entity.
    $clone = clone $entity;

    // Retrieve the entity properties.
    $reflection = new \ReflectionClass($entity);
    $properties = $reflection
      ->getProperties(~\ReflectionProperty::IS_STATIC);
    $translation_unique_properties = [
      'activeLangcode',
      'translationInitialize',
      'fieldDefinitions',
      'languages',
      'langcodeKey',
      'defaultLangcode',
      'defaultLangcodeKey',
      'revisionTranslationAffectedKey',
      'validated',
      'validationRequired',
      'entityTypeId',
      'typedData',
      'cacheContexts',
      'cacheTags',
      'cacheMaxAge',
      '_serviceIds',
      '_entityStorages',
    ];
    foreach ($properties as $property) {

      // Modify each entity property on the clone and assert that the change is
      // not propagated to the original entity.
      $property
        ->setAccessible(TRUE);
      $property
        ->setValue($entity, 'default-value');
      $property
        ->setValue($translation, 'default-value');
      $property
        ->setValue($clone, 'test-entity-cloning');

      // Static properties remain the same across all instances of the class.
      if ($property
        ->isStatic()) {
        $this
          ->assertEquals('test-entity-cloning', $property
          ->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('test-entity-cloning', $property
          ->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('test-entity-cloning', $property
          ->getValue($clone), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
      }
      else {
        $this
          ->assertEquals('default-value', $property
          ->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('default-value', $property
          ->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('test-entity-cloning', $property
          ->getValue($clone), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
      }

      // Modify each entity property on the translation entity object and assert
      // that the change is propagated to the default translation entity object
      // except for the properties that are unique for each entity translation
      // object.
      $property
        ->setValue($translation, 'test-translation-cloning');

      // Using assertEquals or assertNotEquals here is dangerous as if the
      // assertion fails and the property for some reasons contains the entity
      // object e.g. the "typedData" property then the property will be
      // serialized, but this will cause exceptions because the entity is
      // modified in a non-consistent way and ContentEntityBase::__sleep() will
      // not be able to properly access all properties and this will cause
      // exceptions without a proper backtrace.
      if (in_array($property
        ->getName(), $translation_unique_properties)) {
        $this
          ->assertEquals('default-value', $property
          ->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('test-translation-cloning', $property
          ->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
      }
      else {
        $this
          ->assertEquals('test-translation-cloning', $property
          ->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
        $this
          ->assertEquals('test-translation-cloning', $property
          ->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', [
          '%property_name' => $property
            ->getName(),
        ]));
      }
    }
  }

}

Classes

Name	Description
ContentEntityCloneTest	Tests proper cloning of content entities.