AdminMetaTagTest.php

<?php

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

use Drupal\KernelTests\KernelTestBase;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Confirm that the fingerprinting meta tag appears as expected.
 */
class AdminMetaTagTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
  ];
  
  /**
   * Verify that the meta tag HTML is generated correctly.
   */
  public function testMetaTag() : void {
    [$version] = explode('.', \Drupal::VERSION);
    $string = '<meta name="Generator" content="Drupal ' . $version . ' (https://www.drupal.org)" />';
    $this->drupalGet('node');
    $this->assertSession()
      ->responseContains($string);
  }

}