--- /dev/null
+<?php
+
+namespace Drupal\Tests\aggregator\Functional;
+
+use Drupal\aggregator\Entity\Feed;
+use Drupal\system\Tests\Entity\EntityWithUriCacheTagsTestBase;
+use Drupal\user\Entity\Role;
+use Drupal\user\RoleInterface;
+
+/**
+ * Tests the Feed entity's cache tags.
+ *
+ * @group aggregator
+ */
+class FeedCacheTagsTest extends EntityWithUriCacheTagsTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['aggregator'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ // Give anonymous users permission to access feeds, so that we can verify
+ // the cache tags of cached versions of feeds.
+ $user_role = Role::load(RoleInterface::ANONYMOUS_ID);
+ $user_role->grantPermission('access news feeds');
+ $user_role->save();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function createEntity() {
+ // Create a "Llama" feed.
+ $feed = Feed::create([
+ 'title' => 'Llama',
+ 'url' => 'https://www.drupal.org/',
+ 'refresh' => 900,
+ 'checked' => 1389919932,
+ 'description' => 'Drupal.org',
+ ]);
+ $feed->save();
+
+ return $feed;
+ }
+
+}