class ValidateHostnameTest

class ValidateHostnameTest extends UnitTestCase {
  
  /**
   * @covers ::validateHostname
   * @dataProvider providerTestValidateHostname
   */
  public function testValidateHostname($hostname, $message, $expected = FALSE) : void {
    $server = [
      'HTTP_HOST' => $hostname,
    ];
    $request = new Request([], [], [], [], [], $server);
    $validated_hostname = DrupalKernel::validateHostname($request);
    $this->assertSame($expected, $validated_hostname, $message);
  }
  
  /**
   * Provides test data for testValidateHostname().
   */
  public static function providerTestValidateHostname() {
    $data = [];
    // Verifies that DrupalKernel::validateHostname() prevents invalid
    // characters per RFC 952/2181.
    $data[] = [
      'security/.drupal.org:80',
      'HTTP_HOST with / is invalid',
    ];
    $data[] = [
      'security/.drupal.org:80',
      'HTTP_HOST with / is invalid',
    ];
    $data[] = [
      'security\\.drupal.org:80',
      'HTTP_HOST with \\ is invalid',
    ];
    $data[] = [
      'security<.drupal.org:80',
      'HTTP_HOST with &lt; is invalid',
    ];
    $data[] = [
      'security..drupal.org:80',
      'HTTP_HOST with .. is invalid',
    ];
    // Verifies host names that are too long, or have too many parts are
    // invalid.
    $data[] = [
      str_repeat('x', 1000) . '.security.drupal.org:80',
      'HTTP_HOST with more than 1000 characters is invalid.',
    ];
    $data[] = [
      str_repeat('x.', 100) . 'security.drupal.org:80',
      'HTTP_HOST with more than 100 subdomains is invalid.',
    ];
    $data[] = [
      'security.drupal.org:80' . str_repeat(':x', 100),
      'HTTP_HOST with more than 100 port separators is invalid.',
    ];
    // Verifies that a valid hostname is allowed.
    $data[] = [
      'security.drupal.org:80',
      'Properly formed HTTP_HOST is valid.',
      TRUE,
    ];
    // Verifies that using valid IP address for the hostname is allowed.
    $data[] = [
      '72.21.91.99:80',
      'Properly formed HTTP_HOST with IPv4 address valid.',
      TRUE,
    ];
    $data[] = [
      '2607:f8b0:4004:803::1002:80',
      'Properly formed HTTP_HOST with IPv6 address valid.',
      TRUE,
    ];
    // Verifies that the IPv6 loopback address is valid.
    $data[] = [
      '[::1]:80',
      'HTTP_HOST containing IPv6 loopback is valid.',
      TRUE,
    ];
    return $data;
  }

}