class RssViewIntegrationTest

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));
    }
  }

}