class RssTest

class RssTest extends TaxonomyTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'field_ui',
    'views',
  ];
  
  /**
   * Vocabulary for testing.
   *
   * @var \Drupal\taxonomy\VocabularyInterface
   */
  protected $vocabulary;
  
  /**
   * Name of the taxonomy term reference field.
   *
   * @var string
   */
  protected $fieldName;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->setCurrentUser($this->drupalCreateUser([
      'access content',
      'administer taxonomy',
      'bypass node access',
      'administer content types',
      'administer node display',
    ]));
    $this->vocabulary = $this->createVocabulary();
    $this->fieldName = 'taxonomy_' . $this->vocabulary
      ->id();
    $handler_settings = [
      'target_bundles' => [
        $this->vocabulary
          ->id() => $this->vocabulary
          ->id(),
      ],
      'auto_create' => TRUE,
    ];
    $this->createEntityReferenceField('node', 'article', $this->fieldName, '', 'taxonomy_term', 'default', $handler_settings, FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED);
    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');
    $display_repository->getFormDisplay('node', 'article')
      ->setComponent($this->fieldName, [
      'type' => 'options_select',
    ])
      ->save();
    $display_repository->getViewDisplay('node', 'article')
      ->setComponent($this->fieldName, [
      'type' => 'entity_reference_label',
    ])
      ->save();
  }
  
  /**
   * Tests that terms added to nodes are displayed in core RSS feed.
   *
   * Create a node and assert that taxonomy terms appear in rss.xml.
   */
  public function testTaxonomyRss() : void {
    // Create two taxonomy terms.
    $term1 = $this->createTerm($this->vocabulary);
    // Add the RSS display.
    $default_display = $this->container
      ->get('entity_display.repository')
      ->getViewDisplay('node', 'article');
    $rss_display = $default_display->createCopy('rss');
    $rss_display->save();
    // Change the format to 'RSS category'.
    $rss_display->setComponent('taxonomy_' . $this->vocabulary
      ->id(), [
      'type' => 'entity_reference_rss_category',
      'region' => 'content',
    ]);
    $rss_display->save();
    // Create an article.
    $node = $this->drupalCreateNode([
      'type' => 'article',
      $this->fieldName => $term1->id(),
      'promote' => TRUE,
    ]);
    // Check that the term is displayed when the RSS feed is viewed.
    $this->drupalGet('rss.xml');
    $test_element = sprintf('<category %s>%s</category>', 'domain="' . $term1->toUrl('canonical', [
      'absolute' => TRUE,
    ])
      ->toString() . '"', $term1->getName());
    $this->assertSession()
      ->responseContains($test_element);
    // Test that the feed icon exists for the term.
    $this->drupalGet("taxonomy/term/{$term1->id()}");
    $this->assertSession()
      ->linkByHrefExists("taxonomy/term/{$term1->id()}/feed");
    // Test that the feed page exists for the term.
    $this->drupalGet("taxonomy/term/{$term1->id()}/feed");
    $assert = $this->assertSession();
    $assert->responseHeaderContains('Content-Type', 'application/rss+xml');
    // Ensure the RSS version is 2.0.
    $rss_array = $this->getSession()
      ->getDriver()
      ->find('rss');
    $this->assertEquals('2.0', reset($rss_array)->getAttribute('version'));
    // Check that the "Exception value" is disabled by default.
    $this->drupalGet('taxonomy/term/all/feed');
    $this->assertSession()
      ->statusCodeEquals(404);
    // Set the exception value to 'all'.
    $view = Views::getView('taxonomy_term');
    $arguments = $view->getDisplay()
      ->getOption('arguments');
    $arguments['tid']['exception']['value'] = 'all';
    $view->getDisplay()
      ->overrideOption('arguments', $arguments);
    $view->storage
      ->save();
    // Check the article is shown in the feed.
    $raw_xml = '<title>' . $node->label() . '</title>';
    $this->drupalGet('taxonomy/term/all/feed');
    $this->assertSession()
      ->responseContains($raw_xml);
    // Unpublish the article and check that it is not shown in the feed.
    $node->setUnpublished()
      ->save();
    $this->drupalGet('taxonomy/term/all/feed');
    $this->assertSession()
      ->responseNotContains($raw_xml);
  }

}