class UuidResolverTest

class UuidResolverTest extends UnitTestCase {
  
  /**
   * The UuidResolver instance.
   *
   * @var \Drupal\serialization\EntityResolver\UuidResolver
   */
  protected $resolver;
  
  /**
   * The mock entity repository service.
   *
   * @var \Drupal\Core\Entity\EntityRepositoryInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $entityRepository;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->entityRepository = $this->createMock(EntityRepositoryInterface::class);
    $this->resolver = new UuidResolver($this->entityRepository);
  }
  
  /**
   * Tests resolve() with a class using the incorrect interface.
   */
  public function testResolveNotInInterface() : void {
    $this->entityRepository
      ->expects($this->never())
      ->method('loadEntityByUuid');
    $normalizer = $this->createMock('Symfony\\Component\\Serializer\\Normalizer\\NormalizerInterface');
    $this->assertNull($this->resolver
      ->resolve($normalizer, [], 'test_type'));
  }
  
  /**
   * Tests resolve() with a class using the correct interface but no UUID.
   */
  public function testResolveNoUuid() : void {
    $this->entityRepository
      ->expects($this->never())
      ->method('loadEntityByUuid');
    $normalizer = $this->createMock('Drupal\\serialization\\EntityResolver\\UuidReferenceInterface');
    $normalizer->expects($this->once())
      ->method('getUuid')
      ->with([])
      ->willReturn(NULL);
    $this->assertNull($this->resolver
      ->resolve($normalizer, [], 'test_type'));
  }
  
  /**
   * Tests resolve() with correct interface but no matching entity for the UUID.
   */
  public function testResolveNoEntity() : void {
    $uuid = '392eab92-35c2-4625-872d-a9dab4da008e';
    $this->entityRepository
      ->expects($this->once())
      ->method('loadEntityByUuid')
      ->with('test_type')
      ->willReturn(NULL);
    $normalizer = $this->createMock('Drupal\\serialization\\EntityResolver\\UuidReferenceInterface');
    $normalizer->expects($this->once())
      ->method('getUuid')
      ->with([])
      ->willReturn($uuid);
    $this->assertNull($this->resolver
      ->resolve($normalizer, [], 'test_type'));
  }
  
  /**
   * Tests resolve() when a UUID corresponds to an entity.
   */
  public function testResolveWithEntity() : void {
    $uuid = '392eab92-35c2-4625-872d-a9dab4da008e';
    $entity = $this->createMock('Drupal\\Core\\Entity\\EntityInterface');
    $entity->expects($this->once())
      ->method('id')
      ->willReturn(1);
    $this->entityRepository
      ->expects($this->once())
      ->method('loadEntityByUuid')
      ->with('test_type', $uuid)
      ->willReturn($entity);
    $normalizer = $this->createMock('Drupal\\serialization\\EntityResolver\\UuidReferenceInterface');
    $normalizer->expects($this->once())
      ->method('getUuid')
      ->with([])
      ->willReturn($uuid);
    $this->assertSame(1, $this->resolver
      ->resolve($normalizer, [], 'test_type'));
  }

}