class LinkItemSerializationTest

class LinkItemSerializationTest extends FieldKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'link',
        'serialization',
    ];
    
    /**
     * The serializer service.
     *
     * @var \Symfony\Component\Serializer\SerializerInterface
     */
    protected $serializer;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('user');
        $this->serializer = \Drupal::service('serializer');
        // Create a generic, external, and internal link fields for validation.
        FieldStorageConfig::create([
            'entity_type' => 'entity_test',
            'field_name' => 'field_test',
            'type' => 'link',
        ])->save();
        FieldConfig::create([
            'entity_type' => 'entity_test',
            'field_name' => 'field_test',
            'bundle' => 'entity_test',
            'settings' => [
                'link_type' => LinkItemInterface::LINK_GENERIC,
            ],
        ])->save();
    }
    
    /**
     * Tests the serialization.
     */
    public function testLinkSerialization() {
        // Create entity.
        $entity = EntityTest::create();
        $url = 'https://www.drupal.org?test_param=test_value';
        $parsed_url = UrlHelper::parse($url);
        $title = $this->randomMachineName();
        $class = $this->randomMachineName();
        $entity->field_test->uri = $parsed_url['path'];
        $entity->field_test->title = $title;
        $entity->field_test
            ->first()
            ->get('options')
            ->set('query', $parsed_url['query']);
        $entity->field_test
            ->first()
            ->get('options')
            ->set('attributes', [
            'class' => $class,
        ]);
        $entity->save();
        $serialized = $this->serializer
            ->serialize($entity, 'json');
        $deserialized = $this->serializer
            ->deserialize($serialized, EntityTest::class, 'json');
        $options_expected = [
            'query' => $parsed_url['query'],
            'attributes' => [
                'class' => $class,
            ],
        ];
        $this->assertSame($options_expected, $deserialized->field_test->options);
    }
    
    /**
     * Tests the deserialization.
     */
    public function testLinkDeserialization() {
        // Create entity.
        $entity = EntityTest::create();
        $url = 'https://www.drupal.org?test_param=test_value';
        $parsed_url = UrlHelper::parse($url);
        $title = $this->randomMachineName();
        $entity->field_test->uri = $parsed_url['path'];
        $entity->field_test->title = $title;
        $entity->field_test
            ->first()
            ->get('options')
            ->set('query', $parsed_url['query']);
        $json = json_decode($this->serializer
            ->serialize($entity, 'json'), TRUE);
        $json['field_test'][0]['options'] = 'string data';
        $serialized = json_encode($json, TRUE);
        $this->expectException(\LogicException::class);
        $this->expectExceptionMessage('The generic FieldItemNormalizer cannot denormalize string values for "options" properties of the "field_test" field (field item class: Drupal\\link\\Plugin\\Field\\FieldType\\LinkItem).');
        $this->serializer
            ->deserialize($serialized, EntityTest::class, 'json');
    }

}