class LinkExternalProtocolsConstraintValidatorTest

class LinkExternalProtocolsConstraintValidatorTest extends UnitTestCase {
  
  /**
   * Tests validate.
   */
  public function testValidate($url, $valid) : void {
    $link = $this->createMock('Drupal\\link\\LinkItemInterface');
    $link->expects($this->any())
      ->method('getUrl')
      ->willReturn(Url::fromUri($url));
    $context = $this->createMock(ExecutionContextInterface::class);
    $constraintViolationBuilder = $this->createMock(ConstraintViolationBuilderInterface::class);
    $constraintViolationBuilder->method('atPath')
      ->with('uri')
      ->willReturn($constraintViolationBuilder);
    if ($valid) {
      $context->expects($this->never())
        ->method('buildViolation');
    }
    else {
      $context->expects($this->once())
        ->method('buildViolation')
        ->willReturn($constraintViolationBuilder);
    }
    // Setup some more allowed protocols.
    UrlHelper::setAllowedProtocols([
      'http',
      'https',
      'magnet',
    ]);
    $constraint = new LinkExternalProtocolsConstraint();
    $validator = new LinkExternalProtocolsConstraintValidator();
    $validator->initialize($context);
    $validator->validate($link, $constraint);
  }
  
  /**
   * Data provider for ::testValidate.
   */
  public static function providerValidate() {
    $data = [];
    // Test allowed protocols.
    $data[] = [
      'http://www.example.com',
      TRUE,
    ];
    $data[] = [
      'https://www.example.com',
      TRUE,
    ];
    // cSpell:disable-next-line
    $data[] = [
      'magnet:?xt=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C',
      TRUE,
    ];
    // Invalid protocols.
    $data[] = [
      'ftp://ftp.funet.fi/pub/standards/RFC/rfc959.txt',
      FALSE,
    ];
    return $data;
  }
  
  /**
   * Tests validate with malformed uri.
   *
   * @see \Drupal\Core\Url::fromUri
   */
  public function testValidateWithMalformedUri() : void {
    $link = $this->createMock('Drupal\\link\\LinkItemInterface');
    $link->expects($this->any())
      ->method('getUrl')
      ->willThrowException(new \InvalidArgumentException());
    $context = $this->createMock(ExecutionContextInterface::class);
    $context->expects($this->never())
      ->method('buildViolation');
    $constraint = new LinkExternalProtocolsConstraint();
    $validator = new LinkExternalProtocolsConstraintValidator();
    $validator->initialize($context);
    $validator->validate($link, $constraint);
  }
  
  /**
   * Tests validate ignores internal urls.
   */
  public function testValidateIgnoresInternalUrls() : void {
    $link = $this->createMock('Drupal\\link\\LinkItemInterface');
    $link->expects($this->any())
      ->method('getUrl')
      ->willReturn(Url::fromRoute('example.test'));
    $context = $this->createMock(ExecutionContextInterface::class);
    $context->expects($this->never())
      ->method('buildViolation');
    $constraint = new LinkExternalProtocolsConstraint();
    $validator = new LinkExternalProtocolsConstraintValidator();
    $validator->initialize($context);
    $validator->validate($link, $constraint);
  }
  
  /**
   * Tests validating a value that isn't a LinkItemInterface.
   */
  public function testUnexpectedValue() : void {
    $this->expectException(UnexpectedValueException::class);
    $validator = new LinkExternalProtocolsConstraintValidator();
    $context = $this->createMock(ExecutionContextInterface::class);
    $validator->initialize($context);
    $constraint = new LinkExternalProtocolsConstraint();
    $validator->validate('bad value', $constraint);
  }
  
  /**
   * Tests validating an empty Link field.
   */
  public function testEmptyField() : void {
    $link = $this->createMock(LinkItemInterface::class);
    $link->expects($this->once())
      ->method('isEmpty')
      ->willReturn(TRUE);
    $link->expects($this->never())
      ->method('getUrl');
    $validator = new LinkExternalProtocolsConstraintValidator();
    $context = $this->createMock(ExecutionContextInterface::class);
    $validator->initialize($context);
    $constraint = new LinkExternalProtocolsConstraint();
    $validator->validate($link, $constraint);
  }

}