class EntitySerializationTest

class EntitySerializationTest extends NormalizerTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'entity_test',
  ];
  
  /**
   * The test values.
   *
   * @var array
   */
  protected $values;
  
  /**
   * The test entity.
   *
   * @var \Drupal\Core\Entity\ContentEntityInterface
   */
  protected $entity;
  
  /**
   * The test user.
   *
   * @var \Drupal\user\Entity\User
   */
  protected $user;
  
  /**
   * The serializer service.
   *
   * @var \Symfony\Component\Serializer\Serializer
   */
  protected $serializer;
  
  /**
   * The class name of the test class.
   *
   * @var string
   */
  protected $entityClass = 'Drupal\\entity_test\\Entity\\EntityTest';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    FilterFormat::create([
      'format' => 'my_text_format',
      'name' => 'My Text Format',
      'filters' => [
        'filter_html' => [
          'module' => 'filter',
          'status' => TRUE,
          'weight' => 10,
          'settings' => [
            'allowed_html' => '<p>',
          ],
        ],
        'filter_autop' => [
          'module' => 'filter',
          'status' => TRUE,
          'weight' => 10,
          'settings' => [],
        ],
      ],
    ])->save();
    // Create a test user to use as the entity owner.
    $this->user = \Drupal::entityTypeManager()->getStorage('user')
      ->create([
      'name' => 'serialization_test_user',
      'mail' => 'foo@example.com',
      'pass' => '123456',
    ]);
    $this->user
      ->save();
    // Create a test entity to serialize.
    $test_text_value = $this->randomMachineName();
    $this->values = [
      'name' => $this->randomMachineName(),
      'user_id' => $this->user
        ->id(),
      'field_test_text' => [
        'value' => $test_text_value,
        'format' => 'my_text_format',
      ],
    ];
    $this->entity = EntityTestMulRev::create($this->values);
    $this->entity
      ->save();
    $this->serializer = $this->container
      ->get('serializer');
    $this->installConfig([
      'field',
    ]);
  }
  
  /**
   * Tests the normalize function.
   */
  public function testNormalize() : void {
    $expected = [
      'id' => [
        [
          'value' => 1,
        ],
      ],
      'uuid' => [
        [
          'value' => $this->entity
            ->uuid(),
        ],
      ],
      'langcode' => [
        [
          'value' => 'en',
        ],
      ],
      'name' => [
        [
          'value' => $this->values['name'],
        ],
      ],
      'type' => [
        [
          'value' => 'entity_test_mulrev',
        ],
      ],
      'created' => [
        [
          'value' => (new \DateTime())->setTimestamp((int) $this->entity
            ->get('created')->value)
            ->setTimezone(new \DateTimeZone('UTC'))
            ->format(\DateTime::RFC3339),
          'format' => \DateTime::RFC3339,
        ],
      ],
      'user_id' => [
        [
          // id() will return the string value as it comes from the database.
'target_id' => (int) $this->user
            ->id(),
          'target_type' => $this->user
            ->getEntityTypeId(),
          'target_uuid' => $this->user
            ->uuid(),
          'url' => $this->user
            ->toUrl()
            ->toString(),
        ],
      ],
      'revision_id' => [
        [
          'value' => 1,
        ],
      ],
      'default_langcode' => [
        [
          'value' => TRUE,
        ],
      ],
      'revision_translation_affected' => [
        [
          'value' => TRUE,
        ],
      ],
      'non_rev_field' => [],
      'non_mul_field' => [],
      'field_test_text' => [
        [
          'value' => $this->values['field_test_text']['value'],
          'format' => $this->values['field_test_text']['format'],
          'processed' => "<p>{$this->values['field_test_text']['value']}</p>",
        ],
      ],
    ];
    $normalized = $this->serializer
      ->normalize($this->entity);
    foreach (array_keys($expected) as $fieldName) {
      $this->assertSame($expected[$fieldName], $normalized[$fieldName], "Normalization produces expected array for {$fieldName}.");
    }
    $this->assertEquals([], array_diff_key($normalized, $expected), 'No unexpected data is added to the normalized array.');
  }
  
  /**
   * Tests user normalization with some default access controls overridden.
   *
   * @see ::entityFieldAccessAlter()
   */
  public function testUserNormalize() : void {
    // Test password isn't available.
    $normalized = $this->serializer
      ->normalize($this->user);
    $this->assertArrayNotHasKey('pass', $normalized);
    $this->assertArrayNotHasKey('mail', $normalized);
    // Test again using our test user, so that our access control override will
    // allow password viewing.
    $normalized = $this->serializer
      ->normalize($this->user, NULL, [
      'account' => $this->user,
    ]);
    // The key 'pass' will now exist, but the password value should be
    // normalized to NULL.
    $this->assertSame([
      NULL,
    ], $normalized['pass'], '"pass" value is normalized to [NULL]');
  }
  
  /**
   * Implements hook_entity_field_access_alter().
   *
   * Overrides some default access control to support testing.
   *
   * @see ::testUserNormalize()
   */
  public function entityFieldAccessAlter(array &$grants, array $context) : void {
    // Override default access control from UserAccessControlHandler to allow
    // access to 'pass' field for the test user.
    if ($context['field_definition']->getName() == 'pass' && $context['account']->getAccountName() == 'serialization_test_user') {
      $grants[':default'] = AccessResult::allowed()->inheritCacheability($grants[':default'])
        ->addCacheableDependency($context['items']->getEntity());
    }
  }
  
  /**
   * Tests entity serialization for core's formats by a registered Serializer.
   */
  public function testSerialize() : void {
    // Test that Serializer responds using the ComplexDataNormalizer and
    // JsonEncoder. The output of ComplexDataNormalizer::normalize() is tested
    // elsewhere, so we can just assume that it works properly here.
    $normalized = $this->serializer
      ->normalize($this->entity, 'json');
    $expected = Json::encode($normalized);
    // Test 'json'.
    $actual = $this->serializer
      ->serialize($this->entity, 'json');
    $this->assertSame($expected, $actual, 'Entity serializes to JSON when "json" is requested.');
    $actual = $this->serializer
      ->serialize($normalized, 'json');
    $this->assertSame($expected, $actual, 'A normalized array serializes to JSON when "json" is requested');
    // Test 'ajax'.
    $actual = $this->serializer
      ->serialize($this->entity, 'ajax');
    $this->assertSame($expected, $actual, 'Entity serializes to JSON when "ajax" is requested.');
    $actual = $this->serializer
      ->serialize($normalized, 'ajax');
    $this->assertSame($expected, $actual, 'A normalized array serializes to JSON when "ajax" is requested');
    // Generate the expected xml in a way that allows changes to entity property
    // order.
    $expected_created = [
      'value' => DateTimePlus::createFromTimestamp($this->entity->created->value, 'UTC')
        ->format(\DateTime::RFC3339),
      'format' => \DateTime::RFC3339,
    ];
    $expected = [
      'id' => '<id><value>' . $this->entity
        ->id() . '</value></id>',
      'uuid' => '<uuid><value>' . $this->entity
        ->uuid() . '</value></uuid>',
      'langcode' => '<langcode><value>en</value></langcode>',
      'name' => '<name><value>' . $this->values['name'] . '</value></name>',
      'type' => '<type><value>entity_test_mulrev</value></type>',
      'created' => '<created><value>' . $expected_created['value'] . '</value><format>' . $expected_created['format'] . '</format></created>',
      'user_id' => '<user_id><target_id>' . $this->user
        ->id() . '</target_id><target_type>' . $this->user
        ->getEntityTypeId() . '</target_type><target_uuid>' . $this->user
        ->uuid() . '</target_uuid><url>' . $this->user
        ->toUrl()
        ->toString() . '</url></user_id>',
      'revision_id' => '<revision_id><value>' . $this->entity
        ->getRevisionId() . '</value></revision_id>',
      'default_langcode' => '<default_langcode><value>1</value></default_langcode>',
      'revision_translation_affected' => '<revision_translation_affected><value>1</value></revision_translation_affected>',
      'non_mul_field' => '<non_mul_field/>',
      'non_rev_field' => '<non_rev_field/>',
      'field_test_text' => '<field_test_text><value>' . $this->values['field_test_text']['value'] . '</value><format>' . $this->values['field_test_text']['format'] . '</format><processed><![CDATA[<p>' . $this->values['field_test_text']['value'] . '</p>]]></processed></field_test_text>',
    ];
    // Sort it in the same order as normalized.
    $expected = array_merge($normalized, $expected);
    // Add header and footer.
    array_unshift($expected, '<?xml version="1.0"?>' . PHP_EOL . '<response>');
    $expected[] = '</response>' . PHP_EOL;
    // Reduced the array to a string.
    $expected = implode('', $expected);
    // Test 'xml'. The output should match that of Symfony's XmlEncoder.
    $actual = $this->serializer
      ->serialize($this->entity, 'xml');
    $this->assertSame($expected, $actual);
    $actual = $this->serializer
      ->serialize($normalized, 'xml');
    $this->assertSame($expected, $actual);
  }
  
  /**
   * Tests denormalization of an entity.
   */
  public function testDenormalize() : void {
    $normalized = $this->serializer
      ->normalize($this->entity);
    foreach ([
      'json',
      'xml',
    ] as $type) {
      $denormalized = $this->serializer
        ->denormalize($normalized, $this->entityClass, $type, [
        'entity_type' => 'entity_test_mulrev',
      ]);
      $this->assertInstanceOf($this->entityClass, $denormalized);
      $this->assertSame($this->entity
        ->getEntityTypeId(), $denormalized->getEntityTypeId(), 'Expected entity type found.');
      $this->assertSame($this->entity
        ->bundle(), $denormalized->bundle(), 'Expected entity bundle found.');
      $this->assertSame($this->entity
        ->uuid(), $denormalized->uuid(), 'Expected entity UUID found.');
    }
  }
  
  /**
   * Tests denormalizing serialized columns.
   */
  public function testDenormalizeSerializedItem() : void {
    $this->expectException(\LogicException::class);
    $this->expectExceptionMessage('The generic FieldItemNormalizer cannot denormalize string values for "value" properties of the "serialized" field (field item class: Drupal\\entity_test\\Plugin\\Field\\FieldType\\SerializedItem).');
    $this->serializer
      ->denormalize([
      'serialized' => [
        [
          'value' => 'boo',
        ],
      ],
      'type' => 'entity_test_serialized_field',
    ], EntitySerializedField::class);
  }
  
  /**
   * Tests normalizing/denormalizing custom serialized columns.
   */
  public function testDenormalizeCustomSerializedItem() : void {
    $entity = EntitySerializedField::create([
      'serialized_text' => serialize([
        'Hello world!',
      ]),
    ]);
    $normalized = $this->serializer
      ->normalize($entity);
    $this->assertEquals([
      'Hello world!',
    ], $normalized['serialized_text'][0]['value']);
    $this->expectException(\LogicException::class);
    $this->expectExceptionMessage('The generic FieldItemNormalizer cannot denormalize string values for "value" properties of the "serialized_text" field (field item class: Drupal\\entity_test\\Plugin\\Field\\FieldType\\SerializedPropertyItem).');
    $this->serializer
      ->denormalize([
      'serialized_text' => [
        [
          'value' => 'boo',
        ],
      ],
      'type' => 'entity_test_serialized_field',
    ], EntitySerializedField::class);
  }
  
  /**
   * Tests normalizing/denormalizing invalid custom serialized fields.
   */
  public function testDenormalizeInvalidCustomSerializedField() : void {
    $entity = EntitySerializedField::create([
      'serialized_long' => serialize([
        'Hello world!',
      ]),
    ]);
    $normalized = $this->serializer
      ->normalize($entity);
    $this->assertEquals([
      'Hello world!',
    ], $normalized['serialized_long'][0]['value']);
    $this->expectException(\LogicException::class);
    $this->expectExceptionMessage('The generic FieldItemNormalizer cannot denormalize string values for "value" properties of the "serialized_long" field (field item class: Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\StringLongItem).');
    $this->serializer
      ->denormalize([
      'serialized_long' => [
        [
          'value' => 'boo',
        ],
      ],
      'type' => 'entity_test_serialized_field',
    ], EntitySerializedField::class);
  }
  
  /**
   * Tests normalizing/denormalizing empty custom serialized fields.
   */
  public function testDenormalizeEmptyCustomSerializedField() : void {
    $entity = EntitySerializedField::create([
      'serialized_long' => serialize([]),
    ]);
    $normalized = $this->serializer
      ->normalize($entity);
    $this->assertEquals([], $normalized['serialized_long'][0]['value']);
    $entity = $this->serializer
      ->denormalize($normalized, EntitySerializedField::class);
    $this->assertEquals(serialize([]), $entity->get('serialized_long')->value);
  }
  
  /**
   * Tests normalizing/denormalizing valid custom serialized fields.
   */
  public function testDenormalizeValidCustomSerializedField() : void {
    $entity = EntitySerializedField::create([
      'serialized_long' => serialize([
        'key' => 'value',
      ]),
    ]);
    $normalized = $this->serializer
      ->normalize($entity);
    $this->assertEquals([
      'key' => 'value',
    ], $normalized['serialized_long'][0]['value']);
    $entity = $this->serializer
      ->denormalize($normalized, EntitySerializedField::class);
    $this->assertEquals(serialize([
      'key' => 'value',
    ]), $entity->get('serialized_long')->value);
  }
  
  /**
   * Tests normalizing/denormalizing using string values.
   */
  public function testDenormalizeStringValue() : void {
    $this->expectException(\LogicException::class);
    $this->expectExceptionMessage('The generic FieldItemNormalizer cannot denormalize string values for "value" properties of the "serialized_long" field (field item class: Drupal\\Core\\Field\\Plugin\\Field\\FieldType\\StringLongItem).');
    $this->serializer
      ->denormalize([
      'serialized_long' => [
        'boo',
      ],
      'type' => 'entity_test_serialized_field',
    ], EntitySerializedField::class);
  }
  
  /**
   * Tests normalizing cacheable computed field.
   */
  public function testCacheableComputedField() : void {
    $context[CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY] = new CacheableMetadata();
    $entity = EntityTestComputedField::create();
    $normalized = $this->serializer
      ->normalize($entity, NULL, $context);
    $this->assertEquals('computed test cacheable string field', $normalized['computed_test_cacheable_string_field'][0]['value']);
    $this->assertInstanceOf(CacheableDependencyInterface::class, $context[CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY]);
    // See \Drupal\entity_test\Plugin\Field\ComputedTestCacheableStringItemList::computeValue().
    $this->assertEquals($context[CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY]->getCacheContexts(), [
      'url.query_args:computed_test_cacheable_string_field',
    ]);
    $this->assertEquals($context[CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY]->getCacheTags(), [
      'field:computed_test_cacheable_string_field',
    ]);
    $this->assertEquals($context[CacheableNormalizerInterface::SERIALIZATION_CONTEXT_CACHEABILITY]->getCacheMaxAge(), 800);
  }

}