diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php b/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
index ff783ef..81341fd 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\views_ui\Tests;
 
-use Drupal\views_ui\ViewUI;
-
 /**
  * Tests the preview form in the UI.
  */
@@ -92,17 +90,23 @@ public function testPreviewWithPagersUI() {
     }
 
     // Test Full Pager.
-    $view = entity_load('view', 'test_pager_full');
-    $view_ui = new ViewUI($view);
-    $rendered_preview = $view_ui->renderPreview('default');
-    $result = simplexml_load_string('<viewPreview>' . $rendered_preview . '</viewPreview>');
+    $this->drupalGet('admin/structure/views/view/test_pager_full/preview/default');
+    $result = $this->drupalPostAJAX(NULL, array(), array('op' => t('Update preview')));
+
+    // Has AJAX callback replied with an insert command? If so, we can
+    // assume that the page content was updated with AJAX returned data.
+    $result_commands = array();
+    foreach ($result as $command) {
+      $result_commands[$command['command']] = $command;
+    }
+    $this->assertTrue(isset($result_commands['insert']), 'AJAX insert command received.');
 
     // Are there 5 rows returned?
-    $elements = $result->xpath('//div[@class = "view-content"]/div[contains(@class, views-row)]');
+    $elements = $this->xpath('//div[@class = "view-content"]/div[contains(@class, views-row)]');
     $this->assertEqual(count($elements), 5, '5 items found on page.');
 
     // Test that the pager is present and rendered.
-    $elements = $result->xpath('//ul[@class = "pager"]/li');
+    $elements = $this->xpath('//ul[@class = "pager"]/li');
     $this->assertTrue(!empty($elements), 'Full pager found.');
 
     // Verify elements and links to pages.
@@ -137,17 +141,23 @@ public function testPreviewWithPagersUI() {
     }
 
     // Test Mini Pager.
-    $view = entity_load('view', 'test_mini_pager');
-    $view_ui = new ViewUI($view);
-    $rendered_preview = $view_ui->renderPreview('default');
-    $result = simplexml_load_string('<viewPreview>' . $rendered_preview . '</viewPreview>');
+    $this->drupalGet('admin/structure/views/view/test_mini_pager/preview/default');
+    $result = $this->drupalPostAJAX(NULL, array(), array('op' => t('Update preview')));
+
+    // Has AJAX callback replied with an insert command? If so, we can
+    // assume that the page content was updated with AJAX returned data.
+    $result_commands = array();
+    foreach ($result as $command) {
+      $result_commands[$command['command']] = $command;
+    }
+    $this->assertTrue(isset($result_commands['insert']), 'AJAX insert command received.');
 
     // Are there 3 rows returned?
-    $elements = $result->xpath('//div[@class = "view-content"]/div[contains(@class, views-row)]');
+    $elements = $this->xpath('//div[@class = "view-content"]/div[contains(@class, views-row)]');
     $this->assertEqual(count($elements), 3, '3 items found on page.');
 
     // Test that the pager is present and rendered.
-    $elements = $result->xpath('//ul[@class = "pager"]/li');
+    $elements = $this->xpath('//ul[@class = "pager"]/li');
     $this->assertTrue(!empty($elements), 'Mini pager found.');
 
     // Verify elements and links to pages.