diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigExportImportUITest.php b/core/modules/config/lib/Drupal/config/Tests/ConfigExportImportUITest.php
index 69802f9..61bbb52 100644
--- a/core/modules/config/lib/Drupal/config/Tests/ConfigExportImportUITest.php
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigExportImportUITest.php
@@ -33,17 +33,17 @@ class ConfigExportImportUITest extends WebTestBase {
    * @var string
    */
   protected $tarball;
-  
+
   /**
    * A content type, held between test methods.
-   * 
+   *
    * @var string
    */
   protected $content_type;
-  
+
   /**
    * A field, held between test methods.
-   * 
+   *
    * @var string
    */
   protected $field;
@@ -89,12 +89,12 @@ function testExport() {
     \Drupal::config('system.site')
       ->set('slogan', $this->slogan)
       ->save();
-    
+
     // Create a content type.
     $this->content_type = $this->drupalCreateContentType();
     $type_exists = (bool) entity_load('node_type', $this->content_type->type);
     $this->assertTrue($type_exists, 'The new content type has been created in the database.');
-    
+
     // Create a field.
     $this->field = entity_create('field_entity', array(
       'name' => drupal_strtolower($this->randomName()),
@@ -115,11 +115,11 @@ function testExport() {
     entity_get_display('node', $this->content_type->type, 'full')
       ->setComponent($this->field->name)
       ->save();
-    
+
     // Display the creation form.
     $this->drupalGet('node/add/' . $this->content_type->type);
     $this->assertFieldByName("{$this->field->name}[0][value]", '', 'Widget is displayed');
-    
+
     // Export the site configuration.
     $this->drupalPostForm('admin/config/development/configuration/full/export', array(), 'Export');
     $this->tarball = $this->drupalGetContent();
@@ -131,29 +131,29 @@ function testExport() {
   function testImport() {
     $filename = 'temporary://' . $this->randomName();
     file_put_contents($filename, $this->tarball);
-    
+
     // Assert the custom content type does not exist.
     $this->drupalGet('node/add');
     $this->assertNoText($this->content_type->type, 'The new content type does not exist.');
 
     $this->doImport($filename);
-    
+
     // Now that the role is imported, change the slogan and re-import with a non-root user.
     $web_user = $this->drupalCreateUser();
     $web_user->addRole($this->admin_role);
     $web_user->save();
     $this->drupalLogin($web_user);
-    
+
     // Change the site slogan.
     \Drupal::config('system.site')
       ->set('slogan', $this->randomString(16))
       ->save();
     $this->assertNotEqual($this->slogan, \Drupal::config('system.site')->get('slogan'));
-    
+
     $this->doImport($filename);
-    
+
     $this->drupalLogin($this->root_user);
-    
+
     // Check that settings are returned to their prior values.
     $this->assertEqual($this->slogan, \Drupal::config('system.site')->get('slogan'));
     $this->drupalGet('node/add/' . $this->content_type->type);