diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
index ea1a749..7838d51 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
@@ -74,9 +74,15 @@ class JavaScriptTest extends WebTestBase {
    * Test adding settings.
    */
   function testAddSetting() {
+    // Add a file in order to test default settings.
+    $javascript = drupal_add_js('core/misc/collapse.js');
+    $last_settings = end($javascript['settings']['data']);
+    $this->assertTrue($last_settings['currentPath'], 'The current path JavaScript setting is set correctly.');
+
     $javascript = drupal_add_js(array('drupal' => 'rocks', 'dries' => 280342800), 'setting');
-    $this->assertEqual(280342800, $javascript['settings']['data'][3]['dries'], t('JavaScript setting is set correctly.'));
-    $this->assertEqual('rocks', $javascript['settings']['data'][3]['drupal'], t('The other JavaScript setting is set correctly.'));
+    $last_settings = end($javascript['settings']['data']);
+    $this->assertEqual(280342800, $last_settings['dries'], 'JavaScript setting is set correctly.');
+    $this->assertEqual('rocks', $last_settings['drupal'], 'The other JavaScript setting is set correctly.');
   }
 
   /**