SerializationTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\serialization\Kernel;

use Drupal\KernelTests\KernelTestBase;
use Symfony\Component\Serializer\Exception\UnexpectedValueException;

/**
 * Functional tests for serialization system.
 *
 * @group serialization
 */
class SerializationTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'serialization',
    'serialization_test',
  ];
  
  /**
   * The serializer service to test.
   *
   * @var \Symfony\Component\Serializer\SerializerInterface
   */
  protected $serializer;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->serializer = $this->container
      ->get('serializer');
  }
  
  /**
   * Confirms that modules can register normalizers and encoders.
   */
  public function testSerializerComponentRegistration() : void {
    $object = new \stdClass();
    $format = 'serialization_test';
    $expected = 'Normalized by SerializationTestNormalizer, Encoded by SerializationTestEncoder';
    // Ensure the serialization invokes the expected normalizer and encoder.
    $this->assertSame($expected, $this->serializer
      ->serialize($object, $format));
    // Ensure the serialization fails for an unsupported format.
    try {
      $this->serializer
        ->serialize($object, 'unsupported_format');
      $this->fail('The serializer was expected to throw an exception for an unsupported format, but did not.');
    } catch (UnexpectedValueException) {
      // Expected exception; just continue testing.
    }
  }

}