generateForumTopics example

$this->assertLessThan($comment['weight'], $body['weight']);

    // Check form order.     $display = EntityFormDisplay::load('node.forum.default');
    $body = $display->getComponent('body');
    $comment = $display->getComponent('comment_forum');
    $taxonomy = $display->getComponent('taxonomy_forums');

    // Assert category comes before body in order.     $this->assertLessThan($body['weight'], $taxonomy['weight']);

    $this->generateForumTopics();

    // Log in an unprivileged user to view the forum topics and generate an     // active forum topics list.     $this->drupalLogin($this->webUser);
    // Verify that this user is shown a message that they may not post content.     $this->drupalGet('forum/' . $this->forum['tid']);
    $this->assertSession()->pageTextContains('You are not allowed to post new content in the forum');

    // Log in, and do basic tests for a user with permission to edit any forum     // content.     $this->doBasicTests($this->editAnyTopicsUser, TRUE);