class DefaultViewRecentCommentsTest

class DefaultViewRecentCommentsTest extends ViewTestBase {
  use CommentTestTrait;
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    'node',
    'comment',
    'block',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Number of results for the Default display.
   *
   * @var int
   */
  protected $defaultDisplayResults = 5;
  
  /**
   * Number of results for the Block display.
   *
   * @var int
   */
  protected $blockDisplayResults = 5;
  
  /**
   * Number of results for the Page display.
   *
   * @var int
   */
  protected $pageDisplayResults = 5;
  
  /**
   * Will hold the comments created for testing.
   *
   * @var array
   */
  protected $commentsCreated = [];
  
  /**
   * Contains the node object used for comments of this test.
   *
   * @var \Drupal\node\NodeInterface
   */
  public $node;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE, $modules = []) : void {
    parent::setUp($import_test_views, $modules);
    // Create a new content type
    $content_type = $this->drupalCreateContentType();
    // Add a node of the new content type.
    $node_data = [
      'type' => $content_type->id(),
    ];
    $this->addDefaultCommentField('node', $content_type->id());
    $this->node = $this->drupalCreateNode($node_data);
    // Force a flush of the in-memory storage.
    $this->container
      ->get('views.views_data')
      ->clear();
    // Create some comments and attach them to the created node.
    for ($i = 0; $i < $this->defaultDisplayResults; $i++) {
      /** @var \Drupal\comment\CommentInterface $comment */
      $comment = Comment::create([
        'status' => CommentInterface::PUBLISHED,
        'field_name' => 'comment',
        'entity_type' => 'node',
        'entity_id' => $this->node
          ->id(),
      ]);
      $comment->setOwnerId(0);
      $comment->setSubject('Test comment ' . $i);
      $comment->comment_body->value = 'Test body ' . $i;
      $comment->comment_body->format = 'full_html';
      // Ensure comments are sorted in ascending order.
      $time = REQUEST_TIME + ($this->defaultDisplayResults - $i);
      $comment->setCreatedTime($time);
      $comment->changed->value = $time;
      $comment->save();
    }
    // Store all the nodes just created to access their properties on the tests.
    $this->commentsCreated = Comment::loadMultiple();
    // Sort created comments in descending order.
    ksort($this->commentsCreated, SORT_NUMERIC);
  }
  
  /**
   * Tests the block defined by the comments_recent view.
   */
  public function testBlockDisplay() {
    $user = $this->drupalCreateUser([
      'access comments',
    ]);
    $this->drupalLogin($user);
    $view = Views::getView('comments_recent');
    $view->setDisplay('block_1');
    $this->executeView($view);
    $map = [
      'subject' => 'subject',
      'cid' => 'cid',
      'comment_field_data_created' => 'created',
    ];
    $expected_result = [];
    foreach (array_values($this->commentsCreated) as $key => $comment) {
      $expected_result[$key]['subject'] = $comment->getSubject();
      $expected_result[$key]['cid'] = $comment->id();
      $expected_result[$key]['created'] = $comment->getCreatedTime();
    }
    $this->assertIdenticalResultset($view, $expected_result, $map);
    // Check the number of results given by the display is the expected.
    $this->assertCount($this->blockDisplayResults, $view->result, new FormattableMarkup('There are exactly @results comments. Expected @expected', [
      '@results' => count($view->result),
      '@expected' => $this->blockDisplayResults,
    ]));
  }

}