PageTitleTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\system\Functional\System;

use Drupal\Component\Utility\Html;
use Drupal\Component\Utility\Xss;
use Drupal\Core\Site\Settings;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests HTML output escaping of page title, site name, and slogan.
 *
 * @group system
 */
class PageTitleTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'test_page_test',
        'form_test',
        'block',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'starterkit_theme';
    protected $contentUser;
    
    /**
     * Implement setUp().
     */
    protected function setUp() : void {
        parent::setUp();
        $this->drupalCreateContentType([
            'type' => 'page',
            'name' => 'Basic page',
        ]);
        $this->drupalPlaceBlock('page_title_block');
        $this->contentUser = $this->drupalCreateUser([
            'create page content',
            'access content',
            'administer themes',
            'administer site configuration',
            'link to any page',
        ]);
        $this->drupalLogin($this->contentUser);
    }
    
    /**
     * Tests the handling of HTML in node titles.
     */
    public function testTitleTags() : void {
        $title = "string with <em>HTML</em>";
        // Generate node content.
        $edit = [
            'title[0][value]' => '!Test! ' . $title . $this->randomMachineName(20),
            'body[0][value]' => '!Test! test body' . $this->randomMachineName(200),
        ];
        // Create the node with HTML in the title.
        $this->drupalGet('node/add/page');
        $this->submitForm($edit, 'Save');
        // Make sure tags in the node title are converted.
        $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
        $this->assertNotNull($node, 'Node created and found in database');
        $this->assertSession()
            ->responseContains(Html::escape($edit['title[0][value]']));
        $this->drupalGet("node/" . $node->id());
        $this->assertSession()
            ->responseContains(Html::escape($edit['title[0][value]']));
    }
    
    /**
     * Tests if the title of the site is XSS proof.
     */
    public function testTitleXSS() : void {
        // Set some title with JavaScript and HTML chars to escape.
        $title = '</title><script type="text/javascript">alert("Title XSS!");</script> & < > " \' ';
        $title_filtered = Html::escape($title);
        $slogan = '<script type="text/javascript">alert("Slogan XSS!");</script>';
        $slogan_filtered = Xss::filterAdmin($slogan);
        // Set title and slogan.
        $edit = [
            'site_name' => $title,
            'site_slogan' => $slogan,
        ];
        $this->drupalGet('admin/config/system/site-information');
        $this->submitForm($edit, 'Save configuration');
        // Place branding block with site name and slogan into header region.
        $this->drupalPlaceBlock('system_branding_block', [
            'region' => 'header',
        ]);
        // Load frontpage.
        $this->drupalGet('');
        // Test the title, checking for the lack of the unfiltered version of the
        // title.
        $this->assertSession()
            ->responseNotContains($title);
        // Add </title> to make sure we're checking the title tag, rather than the
        // first 'heading' on the page.
        $this->assertSession()
            ->responseContains($title_filtered . '</title>');
        // Test the slogan.
        // Check the unfiltered version of the slogan is missing.
        $this->assertSession()
            ->responseNotContains($slogan);
        // Check for the filtered version of the slogan.
        $this->assertSession()
            ->responseContains($slogan_filtered);
    }
    
    /**
     * Tests the page title of render arrays.
     *
     * @see \Drupal\test_page_test\Controller\Test
     */
    public function testRoutingTitle() : void {
        // Test the '#title' render array attribute.
        $this->drupalGet('test-render-title');
        $this->assertSession()
            ->titleEquals('Foo | Drupal');
        $this->assertSession()
            ->elementTextEquals('xpath', '//h1[@class="page-title"]', 'Foo');
        // Test forms
        $this->drupalGet('form-test/object-builder');
        $this->assertSession()
            ->titleEquals('Test dynamic title | Drupal');
        $this->assertSession()
            ->elementTextEquals('xpath', '//h1[@class="page-title"]', 'Test dynamic title');
        // Set some custom translated strings.
        $settings_key = 'locale_custom_strings_en';
        // Update in-memory settings directly.
        $settings = Settings::getAll();
        $settings[$settings_key] = [
            '' => [
                'Static title' => 'Static title translated',
            ],
        ];
        new Settings($settings);
        // Rewrites the settings.php.
        $this->writeSettings([
            'settings' => [
                $settings_key => (object) [
                    'value' => $settings[$settings_key],
                    'required' => TRUE,
                ],
            ],
        ]);
        // Ensure that the title got translated.
        $this->drupalGet('test-page-static-title');
        $this->assertSession()
            ->titleEquals('Static title translated | Drupal');
        $this->assertSession()
            ->elementTextEquals('xpath', '//h1[@class="page-title"]', 'Static title translated');
        // Test the dynamic '_title_callback' route option.
        $this->drupalGet('test-page-dynamic-title');
        $this->assertSession()
            ->titleEquals('Dynamic title | Drupal');
        $this->assertSession()
            ->elementTextEquals('xpath', '//h1[@class="page-title"]', 'Dynamic title');
        // Ensure that titles are cacheable and are escaped normally if the
        // controller does not escape them.
        $this->drupalGet('test-page-cached-controller');
        $this->assertSession()
            ->titleEquals('Cached title | Drupal');
        $this->assertSession()
            ->responseContains(Html::escape('<span>Cached title</span>') . '</h1>');
        $this->drupalGet('test-page-cached-controller');
        $this->assertSession()
            ->titleEquals('Cached title | Drupal');
        $this->assertSession()
            ->responseContains(Html::escape('<span>Cached title</span>') . '</h1>');
    }

}