OEmbedResourceConstraint example

$this->installEntitySchema('user');
  }

  /** * @covers ::validate */
  public function testValidateEmptySource() {
    $media = Media::create([
      'bundle' => $this->createMediaType('oembed:video')->id(),
    ]);

    $constraint = new OEmbedResourceConstraint();

    // The media item has an empty source value, so the constraint validator     // should add a violation and return early before invoking the URL resolver.     $context = $this->prophesize(ExecutionContextInterface::class);
    $context->addViolation($constraint->invalidResourceMessage)->shouldBeCalled();

    $url_resolver = $this->prophesize(UrlResolverInterface::class);
    $url_resolver->getProviderByUrl(Argument::any())->shouldNotBeCalled();

    $validator = new OEmbedResourceConstraintValidator(
      $url_resolver->reveal(),