class CommentTestBase

abstract class CommentTestBase extends ViewTestBase {
  use CommentTestTrait;
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    'node',
    'comment',
    'comment_test_views',
  ];
  
  /**
   * A normal user with permission to post comments (without approval).
   *
   * @var \Drupal\user\UserInterface
   */
  protected $account;
  
  /**
   * A second normal user that will author a node for $account to comment on.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $account2;
  
  /**
   * Stores a node posted by the user created as $account.
   *
   * @var \Drupal\node\NodeInterface
   */
  protected $nodeUserPosted;
  
  /**
   * Stores a node posted by the user created as $account2.
   *
   * @var \Drupal\node\NodeInterface
   */
  protected $nodeUserCommented;
  
  /**
   * Stores a comment used by the tests.
   *
   * @var \Drupal\comment\Entity\Comment
   */
  protected $comment;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE, $modules = [
    'comment_test_views',
  ]) {
    parent::setUp($import_test_views, $modules);
    // Add two users, create a node with the user1 as author and another node
    // with user2 as author. For the second node add a comment from user1.
    $this->account = $this->drupalCreateUser([
      'skip comment approval',
    ]);
    $this->account2 = $this->drupalCreateUser();
    $this->drupalLogin($this->account);
    $this->drupalCreateContentType([
      'type' => 'page',
      'name' => t('Basic page'),
    ]);
    $this->addDefaultCommentField('node', 'page');
    $this->nodeUserPosted = $this->drupalCreateNode();
    $this->nodeUserCommented = $this->drupalCreateNode([
      'uid' => $this->account2
        ->id(),
    ]);
    $comment = [
      'uid' => $this->loggedInUser
        ->id(),
      'entity_id' => $this->nodeUserCommented
        ->id(),
      'entity_type' => 'node',
      'field_name' => 'comment',
      'subject' => 'How much wood would a woodchuck chuck',
      'cid' => '',
      'pid' => '',
      'mail' => 'someone@example.com',
    ];
    $this->comment = Comment::create($comment);
    $this->comment
      ->save();
  }

}