RssViewIntegrationTest.php

<?php

namespace Drupal\Tests\rdf\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * @group rdf
 * @group legacy
 */
class RssViewIntegrationTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'rdf_test_namespaces',
        'views',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests that RSS views have RDF's XML namespaces defined.
     */
    public function testRdfNamespacesAreAddedToRssViews() : void {
        // RDF's namespaces are only attached when there is content in the feed.
        $node_type = $this->drupalCreateContentType()
            ->id();
        $this->drupalCreateNode([
            'type' => $node_type,
        ]);
        $this->drupalGet('rdf-rss-test');
        $this->assertSession()
            ->statusCodeEquals(200);
        // Mink insists on treating the page as an HTML document, so we have to use
        // PHP's built-in DOM extension to examine the RSS feed.
        $xml = $this->getSession()
            ->getPage()
            ->getContent();
        $document = new \DOMDocument();
        $this->assertTrue($document->loadXML($xml));
        foreach (rdf_get_namespaces() as $prefix => $uri) {
            if ($prefix === 'dc') {
                continue;
            }
            $this->assertSame($uri, $document->lookupNamespaceURI($prefix));
        }
    }

}