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diff --git a/web/core/modules/comment/tests/src/Functional/CommentRssTest.php b/web/core/modules/comment/tests/src/Functional/CommentRssTest.php
new file mode 100644
index 000000000..60708bd4a
--- /dev/null
+++ b/web/core/modules/comment/tests/src/Functional/CommentRssTest.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace Drupal\Tests\comment\Functional;
+
+use Drupal\comment\Plugin\Field\FieldType\CommentItemInterface;
+use Drupal\Core\Cache\Cache;
+use Drupal\Core\Entity\Entity\EntityViewDisplay;
+use Drupal\system\Tests\Cache\AssertPageCacheContextsAndTagsTrait;
+
+/**
+ * Tests comments as part of an RSS feed.
+ *
+ * @group comment
+ */
+class CommentRssTest extends CommentTestBase {
+
+  use AssertPageCacheContextsAndTagsTrait;
+
+  /**
+   * Modules to install.
+   *
+   * @var array
+   */
+  public static $modules = ['views'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    // Setup the rss view display.
+    EntityViewDisplay::create([
+      'status' => TRUE,
+      'targetEntityType' => 'node',
+      'bundle' => 'article',
+      'mode' => 'rss',
+      'content' => ['links' => ['weight' => 100]],
+    ])->save();
+  }
+
+  /**
+   * Tests comments as part of an RSS feed.
+   */
+  public function testCommentRss() {
+    // Find comment in RSS feed.
+    $this->drupalLogin($this->webUser);
+    $this->postComment($this->node, $this->randomMachineName(), $this->randomMachineName());
+    $this->drupalGet('rss.xml');
+
+    $cache_contexts = [
+      'languages:language_interface',
+      'theme',
+      'url.site',
+      'user.node_grants:view',
+      'user.permissions',
+      'timezone',
+    ];
+    $this->assertCacheContexts($cache_contexts);
+
+    $cache_context_tags = \Drupal::service('cache_contexts_manager')->convertTokensToKeys($cache_contexts)->getCacheTags();
+    $this->assertCacheTags(Cache::mergeTags($cache_context_tags, [
+      'config:views.view.frontpage',
+      'node:1', 'node_list',
+      'node_view',
+      'user:3',
+    ]));
+
+    $raw = '<comments>' . $this->node->url('canonical', ['fragment' => 'comments', 'absolute' => TRUE]) . '</comments>';
+    $this->assertRaw($raw, 'Comments as part of RSS feed.');
+
+    // Hide comments from RSS feed and check presence.
+    $this->node->set('comment', CommentItemInterface::HIDDEN);
+    $this->node->save();
+    $this->drupalGet('rss.xml');
+    $this->assertNoRaw($raw, 'Hidden comments is not a part of RSS feed.');
+  }
+
+}