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');
    }

}