NodePreviewLinkTest.php

<?php

namespace Drupal\Tests\node\FunctionalJavascript;

use Drupal\filter\Entity\FilterFormat;
use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**
 * Tests the JavaScript prevention of navigation away from node previews.
 *
 * @group node
 */
class NodePreviewLinkTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'node',
        'filter',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    public function setUp() {
        parent::setUp();
        $filtered_html_format = FilterFormat::create([
            'format' => 'filtered_html',
            'name' => 'Filtered HTML',
        ]);
        $filtered_html_format->save();
        $this->drupalCreateContentType([
            'type' => 'test',
        ]);
        $user = $this->drupalCreateUser([
            'access content',
            'edit own test content',
            'create test content',
            $filtered_html_format->getPermissionName(),
        ]);
        $this->drupalLogin($user);
    }
    
    /**
     * Test the behavior of clicking preview links.
     */
    public function testPreviewLinks() {
        $assertSession = $this->assertSession();
        $this->drupalPostForm('node/add/test', [
            'title[0][value]' => 'Test node',
            'body[0][value]' => '<a href="#foo">Anchor link</a><a href="/foo">Normal link</a>',
        ], t('Preview'));
        $this->clickLink('Anchor link');
        $assertSession->pageTextNotContains('Leave preview?');
        $this->clickLink('Normal link');
        $assertSession->pageTextContains('Leave preview?');
        $this->click('button:contains("Leave preview")');
        $this->assertStringEndsWith('/foo', $this->getUrl());
    }

}