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diff --git a/web/core/modules/file/tests/src/Functional/FileFieldRSSContentTest.php b/web/core/modules/file/tests/src/Functional/FileFieldRSSContentTest.php
new file mode 100644
index 000000000..26d14dbfb
--- /dev/null
+++ b/web/core/modules/file/tests/src/Functional/FileFieldRSSContentTest.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace Drupal\Tests\file\Functional;
+
+use Drupal\file\Entity\File;
+
+/**
+ * Ensure that files added to nodes appear correctly in RSS feeds.
+ *
+ * @group file
+ */
+class FileFieldRSSContentTest extends FileFieldTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['node', 'views'];
+
+  /**
+   * Tests RSS enclosure formatter display for RSS feeds.
+   */
+  public function testFileFieldRSSContent() {
+    $node_storage = $this->container->get('entity.manager')->getStorage('node');
+    $field_name = strtolower($this->randomMachineName());
+    $type_name = 'article';
+
+    $this->createFileField($field_name, 'node', $type_name);
+
+    // RSS display must be added manually.
+    $this->drupalGet("admin/structure/types/manage/$type_name/display");
+    $edit = [
+      "display_modes_custom[rss]" => '1',
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+
+    // Change the format to 'RSS enclosure'.
+    $this->drupalGet("admin/structure/types/manage/$type_name/display/rss");
+    $edit = [
+      "fields[$field_name][type]" => 'file_rss_enclosure',
+      "fields[$field_name][region]" => 'content',
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+
+    // Create a new node with a file field set. Promote to frontpage
+    // needs to be set so this node will appear in the RSS feed.
+    $node = $this->drupalCreateNode(['type' => $type_name, 'promote' => 1]);
+    $test_file = $this->getTestFile('text');
+
+    // Create a new node with the uploaded file.
+    $nid = $this->uploadNodeFile($test_file, $field_name, $node->id());
+
+    // Get the uploaded file from the node.
+    $node_storage->resetCache([$nid]);
+    $node = $node_storage->load($nid);
+    $node_file = File::load($node->{$field_name}->target_id);
+
+    // Check that the RSS enclosure appears in the RSS feed.
+    $this->drupalGet('rss.xml');
+    $uploaded_filename = str_replace('public://', '', $node_file->getFileUri());
+    $selector = sprintf(
+      'enclosure[@url="%s"][@length="%s"][@type="%s"]',
+      file_create_url("public://$uploaded_filename", ['absolute' => TRUE]),
+      $node_file->getSize(),
+      $node_file->getMimeType()
+    );
+    $this->assertNotNull($this->getSession()->getDriver()->find('xpath', $selector), 'File field RSS enclosure is displayed when viewing the RSS feed.');
+  }
+
+}