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'));
    }

}