diff --git a/core/modules/rest/src/Tests/FileTest.php b/core/modules/rest/src/Tests/FileTest.php
index bc4fcc7..705de75 100644
--- a/core/modules/rest/src/Tests/FileTest.php
+++ b/core/modules/rest/src/Tests/FileTest.php
@@ -4,6 +4,7 @@
 
 use Drupal\Core\Url;
 use Drupal\file\Entity\File;
+use Drupal\file\FileInterface;
 
 /**
  * Tests CRUD operations for file entity.
@@ -91,6 +92,9 @@ public function testCrudFile() {
     $file = File::load(1);
     $this->assertEqual('default2.txt', $file->getFilename(), 'The name was updated as expected');
 
+    $file_uri = $file->getFileUri();
+    $this->assertTrue($this->isFileInFileSystem($file_uri), 'File exists in file system');
+
     // Only the owner can remove the file.
     $this->drupalLogin($account2);
     $this->httpRequest('entity/' . $entity_type . '/1', 'DELETE', NULL, 'application/hal+json');
@@ -99,6 +103,27 @@ public function testCrudFile() {
     $this->drupalLogin($account1);
     $this->httpRequest('entity/' . $entity_type . '/1', 'DELETE', NULL, 'application/hal+json');
     $this->assertResponse(204);
+
+    \Drupal::entityTypeManager()->getStorage('file')->resetCache([1]);
+    $this->assertFalse($this->isFileInFileSystem($file_uri), 'File no longer exists in file system');
+    $this->assertNull(File::load(1), 'The file no longer exists after delete.');
+
+    // Attempt to get the file again after delete.
+    $this->httpRequest(Url::fromUri('base://entity/file/1', ['query' => ['_format' => 'hal_json']]), 'GET', NULL, 'application/hal+json');
+    $this->assertResponse(404);
+  }
+
+  /**
+   * Determines whether a file is actually in the file system.
+   *
+   * @param $uri
+   *   The URI of the file to check.
+   *
+   * @return bool
+   */
+  protected function isFileInFileSystem($uri) {
+    $path = \Drupal::service('file_system')->realpath($uri);
+    return file_exists($path);
   }
 
 }