class EntityResolverTest

class EntityResolverTest extends NormalizerTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'hal',
    'rest',
  ];
  
  /**
   * The format being tested.
   *
   * @var string
   */
  protected $format = 'hal_json';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Create the test field storage.
    FieldStorageConfig::create([
      'entity_type' => 'entity_test_mulrev',
      'field_name' => 'field_test_entity_reference',
      'type' => 'entity_reference',
      'settings' => [
        'target_type' => 'entity_test_mulrev',
      ],
    ])->save();
    // Create the test field.
    FieldConfig::create([
      'entity_type' => 'entity_test_mulrev',
      'field_name' => 'field_test_entity_reference',
      'bundle' => 'entity_test_mulrev',
    ])->save();
  }
  
  /**
   * Tests that fields referencing UUIDs can be denormalized.
   */
  public function testUuidEntityResolver() {
    // Create an entity to get the UUID from.
    $entity = EntityTestMulRev::create([
      'type' => 'entity_test_mulrev',
    ]);
    $entity->set('name', 'foobar');
    $entity->set('field_test_entity_reference', [
      [
        'target_id' => 1,
      ],
    ]);
    $entity->save();
    $field_uri = Url::fromUri('base:rest/relation/entity_test_mulrev/entity_test_mulrev/field_test_entity_reference', [
      'absolute' => TRUE,
    ])->toString();
    $data = [
      '_links' => [
        'type' => [
          'href' => Url::fromUri('base:rest/type/entity_test_mulrev/entity_test_mulrev', [
            'absolute' => TRUE,
          ])->toString(),
        ],
        $field_uri => [
          [
            'href' => $entity->toUrl()
              ->toString(),
          ],
        ],
      ],
      '_embedded' => [
        $field_uri => [
          [
            '_links' => [
              'self' => $entity->toUrl()
                ->toString(),
            ],
            'uuid' => [
              [
                'value' => $entity->uuid(),
              ],
            ],
          ],
        ],
      ],
    ];
    $denormalized = $this->container
      ->get('serializer')
      ->denormalize($data, 'Drupal\\entity_test\\Entity\\EntityTestMulRev', $this->format);
    $field_value = $denormalized->get('field_test_entity_reference')
      ->getValue();
    $this->assertEquals(1, $field_value[0]['target_id'], 'Entity reference resolved using UUID.');
  }

}