class NullNormalizerTest

class NullNormalizerTest extends UnitTestCase {
  use JsonSchemaTestTrait;
  
  /**
   * The NullNormalizer instance.
   *
   * @var \Drupal\serialization\Normalizer\NullNormalizer
   */
  protected $normalizer;
  
  /**
   * The interface to use in testing.
   *
   * @var string
   */
  protected $interface = 'Drupal\\Core\\TypedData\\TypedDataInterface';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->normalizer = new NullNormalizer($this->interface);
  }
  
  /**
   * @covers ::__construct
   * @covers ::supportsNormalization
   */
  public function testSupportsNormalization() : void {
    $mock = $this->createMock('Drupal\\Core\\TypedData\\TypedDataInterface');
    $this->assertTrue($this->normalizer
      ->supportsNormalization($mock));
    // Also test that an object not implementing TypedDataInterface fails.
    $this->assertFalse($this->normalizer
      ->supportsNormalization(new \stdClass()));
  }
  
  /**
   * @covers ::normalize
   */
  public function testNormalize() : void {
    $mock = $this->createMock('Drupal\\Core\\TypedData\\TypedDataInterface');
    $this->assertNull($this->normalizer
      ->normalize($mock));
  }
  
  /**
   * {@inheritdoc}
   */
  public static function jsonSchemaDataProvider() : array {
    return [
      'null' => [
        TypedDataInterface::class,
      ],
    ];
  }

}