CommentRowTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\comment\Functional\Views;

use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests the comment row plugin.
 */
class CommentRowTest extends CommentTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_comment_row',
  ];
  
  /**
   * Tests comment row.
   */
  public function testCommentRow() : void {
    $this->drupalGet('test-comment-row');
    $this->assertSession()
      ->elementsCount('xpath', '//article[contains(@class, "comment")]', 1);
  }

}