class AggregatorRenderingTest

class AggregatorRenderingTest extends AggregatorTestBase {
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    'block',
    'test_page_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->drupalPlaceBlock('page_title_block');
  }
  
  /**
   * Adds a feed block to the page and checks its links.
   */
  public function testBlockLinks() {
    // Create feed.
    $this->createSampleNodes();
    $feed = $this->createFeed();
    $this->updateFeedItems($feed, $this->getDefaultFeedItemCount());
    // Need admin user to be able to access block admin.
    $admin_user = $this->drupalCreateUser([
      'administer blocks',
      'access administration pages',
      'administer news feeds',
      'access news feeds',
    ]);
    $this->drupalLogin($admin_user);
    $block = $this->drupalPlaceBlock("aggregator_feed_block", [
      'label' => 'feed-' . $feed->label(),
    ]);
    // Configure the feed that should be displayed.
    $block->getPlugin()
      ->setConfigurationValue('feed', $feed->id());
    $block->getPlugin()
      ->setConfigurationValue('block_count', 2);
    $block->save();
    // Confirm that the block is now being displayed on pages.
    $this->drupalGet('test-page');
    $this->assertSession()
      ->pageTextContains($block->label());
    // Confirm items appear as links.
    $items = $this->container
      ->get('entity_type.manager')
      ->getStorage('aggregator_item')
      ->loadByFeed($feed->id(), 1);
    $this->assertSession()
      ->linkByHrefExists(reset($items)->getLink());
    // Find the expected read_more link.
    $this->assertSession()
      ->linkByHrefExists($feed->toUrl()
      ->toString());
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed:' . $feed->id());
    // Visit that page.
    $this->drupalGet($feed->toUrl()
      ->getInternalPath());
    // Verify that aggregator feed page is available and has the correct title.
    $this->assertSession()
      ->elementTextContains('xpath', '//h1', $feed->label());
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed:' . $feed->id());
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed_view');
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_item_view');
    // Set the number of news items to 0 to test that the block does not show
    // up.
    $block->getPlugin()
      ->setConfigurationValue('block_count', 0);
    $block->save();
    // Check that the block is no longer displayed.
    $this->drupalGet('test-page');
    $this->assertSession()
      ->pageTextNotContains($block->label());
  }
  
  /**
   * Creates a feed and checks that feed's page.
   */
  public function testFeedPage() {
    // Increase the number of items published in the rss.xml feed so we have
    // enough articles to test paging.
    $view = View::load('frontpage');
    $display =& $view->getDisplay('feed_1');
    $display['display_options']['pager']['options']['items_per_page'] = 30;
    $view->save();
    // Create a feed with 30 items.
    $this->createSampleNodes(30);
    // Request the /aggregator page so that it is cached.
    $this->drupalGet('aggregator');
    $feed = $this->createFeed();
    $this->updateFeedItems($feed, 30);
    // Verify that items are loaded on the page by checking for the pager.
    $this->drupalGet('aggregator');
    $this->assertSession()
      ->elementExists('xpath', '//ul[contains(@class, "pager__items")]');
    // Save the feed entity to invalidate the cache so that the paginated cache
    // context can be tested.
    $feed->save();
    // Request page with no feed items to ensure cache context is set correctly.
    $this->drupalGet('aggregator', [
      'query' => [
        'page' => 2,
      ],
    ]);
    // Check for presence of an aggregator pager.
    $this->drupalGet('aggregator');
    $this->assertSession()
      ->elementExists('xpath', '//ul[contains(@class, "pager__items")]');
    // Check for sources page title.
    $this->drupalGet('aggregator/sources');
    $this->assertSession()
      ->elementTextContains('xpath', '//h1', 'Sources');
    // Find the expected read_more link on the sources page.
    $href = $feed->toUrl()
      ->toString();
    $this->assertSession()
      ->linkByHrefExists($href);
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed:' . $feed->id());
    // Check the rss aggregator page as anonymous user.
    $this->drupalLogout();
    $this->drupalGet('aggregator/rss');
    $this->assertSession()
      ->statusCodeEquals(403);
    // Check the rss aggregator page as admin.
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('aggregator/rss');
    $this->assertSession()
      ->statusCodeEquals(200);
    $this->assertSession()
      ->responseHeaderEquals('Content-Type', 'application/rss+xml; charset=utf-8');
    // Check the opml aggregator page.
    $this->drupalGet('aggregator/opml');
    $content = $this->getSession()
      ->getPage()
      ->getContent();
    // We can't use Mink xpath queries here because it only supports HTML pages,
    // but we are dealing with XML here.
    $xml = simplexml_load_string($content);
    $attributes = $xml->xpath('//outline[1]')[0]
      ->attributes();
    $this->assertEquals('rss', $attributes->type);
    $this->assertEquals($feed->label(), $attributes->text);
    $this->assertEquals($feed->getUrl(), $attributes->xmlUrl);
    // Check for the presence of a pager.
    $this->drupalGet('aggregator/sources/' . $feed->id());
    $this->assertSession()
      ->elementExists('xpath', '//ul[contains(@class, "pager__items")]');
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed:' . $feed->id());
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_feed_view');
    $this->assertSession()
      ->responseHeaderContains('X-Drupal-Cache-Tags', 'aggregator_item_view');
  }

}