core/modules/locale/src/Tests/LocaleLibraryAlterTest.php | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/core/modules/locale/src/Tests/LocaleLibraryAlterTest.php b/core/modules/locale/src/Tests/LocaleLibraryAlterTest.php
index 66f318a..5b7d6df 100644
--- a/core/modules/locale/src/Tests/LocaleLibraryAlterTest.php
+++ b/core/modules/locale/src/Tests/LocaleLibraryAlterTest.php
@@ -6,6 +6,7 @@
 
 namespace Drupal\locale\Tests;
 
+use Drupal\Core\Asset\AttachedAssets;
 use Drupal\simpletest\WebTestBase;
 
 /**
@@ -30,9 +31,9 @@ class LocaleLibraryAlterTest extends WebTestBase {
    * @see locale_library_alter()
    */
   public function testLibraryAlter() {
-    $js_assets = $this->container->get('asset.resolver')
-      ->setLibraries(['core/jquery.ui.datepicker'])
-      ->getJsAssets(FALSE)[1];
+    $assets = new AttachedAssets();
+    $assets->setLibraries(['core/jquery.ui.datepicker']);
+    $js_assets = $this->container->get('asset.resolver')->getJsAssets($assets, FALSE)[0];
     $this->assertTrue(array_key_exists('core/modules/locale/locale.datepicker.js', $js_assets), 'locale.datepicker.js added to scripts.');
   }
 }