CommentBookTest.php

<?php

namespace Drupal\Tests\comment\Functional;

use Drupal\comment\CommentInterface;
use Drupal\comment\Tests\CommentTestTrait;
use Drupal\node\Entity\Node;
use Drupal\Tests\BrowserTestBase;
use Drupal\comment\Entity\Comment;

/**
 * Tests visibility of comments on book pages.
 *
 * @group comment
 */
class CommentBookTest extends BrowserTestBase {
    use CommentTestTrait;
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'book',
        'comment',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Create comment field on book.
        $this->addDefaultCommentField('node', 'book');
    }
    
    /**
     * Tests comments in book export.
     */
    public function testBookCommentPrint() {
        $book_node = Node::create([
            'type' => 'book',
            'title' => 'Book title',
            'body' => 'Book body',
        ]);
        $book_node->book['bid'] = 'new';
        $book_node->save();
        $comment_subject = $this->randomMachineName(8);
        $comment_body = $this->randomMachineName(8);
        $comment = Comment::create([
            'subject' => $comment_subject,
            'comment_body' => $comment_body,
            'entity_id' => $book_node->id(),
            'entity_type' => 'node',
            'field_name' => 'comment',
            'status' => CommentInterface::PUBLISHED,
        ]);
        $comment->save();
        $commenting_user = $this->drupalCreateUser([
            'access printer-friendly version',
            'access comments',
            'post comments',
        ]);
        $this->drupalLogin($commenting_user);
        $this->drupalGet('node/' . $book_node->id());
        $this->assertSession()
            ->pageTextContains($comment_subject);
        $this->assertSession()
            ->pageTextContains($comment_body);
        $this->assertSession()
            ->pageTextContains('Add new comment');
        // Ensure that the comment form subject field exists.
        $this->assertSession()
            ->fieldExists('subject[0][value]');
        $this->drupalGet('book/export/html/' . $book_node->id());
        $this->assertSession()
            ->pageTextContains('Comments');
        $this->assertSession()
            ->pageTextContains($comment_subject);
        $this->assertSession()
            ->pageTextContains($comment_body);
        $this->assertSession()
            ->pageTextNotContains('Add new comment');
        // Verify that the comment form subject field is not found.
        $this->assertSession()
            ->fieldNotExists('subject[0][value]');
    }

}