class NodeAccessPagerTest

class NodeAccessPagerTest extends BrowserTestBase {
  use CommentTestTrait;
  
  /**
   * An user.
   *
   * @var \Drupal\user\Entity\User
   */
  protected $webUser;
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'node_access_test',
    'comment',
    'forum',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    node_access_rebuild();
    $this->drupalCreateContentType([
      'type' => 'page',
      'name' => 'Basic page',
    ]);
    $this->addDefaultCommentField('node', 'page');
    $this->webUser = $this->drupalCreateUser([
      'access content',
      'access comments',
      'node test view',
    ]);
  }
  
  /**
   * Tests the comment pager for nodes with multiple grants per realm.
   */
  public function testCommentPager() {
    // Create a node.
    $node = $this->drupalCreateNode();
    // Create 60 comments.
    for ($i = 0; $i < 60; $i++) {
      $comment = Comment::create([
        'entity_id' => $node->id(),
        'entity_type' => 'node',
        'field_name' => 'comment',
        'subject' => $this->randomMachineName(),
        'comment_body' => [
          [
            'value' => $this->randomMachineName(),
          ],
        ],
        'status' => CommentInterface::PUBLISHED,
      ]);
      $comment->save();
    }
    $this->drupalLogin($this->webUser);
    // View the node page. With the default 50 comments per page there should
    // be two pages (0, 1) but no third (2) page.
    $this->drupalGet('node/' . $node->id());
    $this->assertSession()
      ->pageTextContains($node->label());
    $this->assertSession()
      ->pageTextContains('Comments');
    $this->assertSession()
      ->responseContains('page=1');
    $this->assertSession()
      ->responseNotContains('page=2');
  }
  
  /**
   * Tests the forum node pager for nodes with multiple grants per realm.
   */
  public function testForumPager() {
    // Look up the forums vocabulary ID.
    $vid = $this->config('forum.settings')
      ->get('vocabulary');
    $this->assertNotEmpty($vid, 'Forum navigation vocabulary ID is set.');
    // Look up the general discussion term.
    $tree = \Drupal::entityTypeManager()->getStorage('taxonomy_term')
      ->loadTree($vid, 0, 1);
    $tid = reset($tree)->tid;
    $this->assertNotEmpty($tid, 'General discussion term is found in the forum vocabulary.');
    // Create 30 nodes.
    for ($i = 0; $i < 30; $i++) {
      $this->drupalCreateNode([
        'nid' => NULL,
        'type' => 'forum',
        'taxonomy_forums' => [
          [
            'target_id' => $tid,
          ],
        ],
      ]);
    }
    // View the general discussion forum page. With the default 25 nodes per
    // page there should be two pages for 30 nodes, no more.
    $this->drupalLogin($this->webUser);
    $this->drupalGet('forum/' . $tid);
    $this->assertSession()
      ->responseContains('page=1');
    $this->assertSession()
      ->responseNotContains('page=2');
  }

}