diff --git a/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php b/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
index 8589bf7..50964ee 100644
--- a/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/Views/NodeContextualLinksTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\node\Tests\Views;
 
+use Drupal\Component\Utility\Json;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
@@ -46,13 +47,55 @@ public function testNodeContextualLinks() {
     $user = $this->drupalCreateUser(array('administer nodes', 'access contextual links'));
     $this->drupalLogin($user);
 
-    $data = $this->drupalPostAJAX('contextual/render', array('ids' => array('node:node:1:')), NULL, NULL, array(), array(), NULL, array());
-
-    $this->drupalSetContent($data->{'node:node:1:'});
+    $response = $this->renderContextualLinks(array('node:node:1:'), 'node');
+    $this->assertResponse(200);
+    $json = Json::decode($response);
+    $this->drupalSetContent($json['node:node:1:']);
 
     $result = $this->xpath("//a[contains(@href, 'node/1/contextual-links')]");
     $this->assertEqual(count($result), 1, 'One contextual link found.');
     $this->assertEqual((string) $result[0], 'Test contextual link', 'Ensure the right link text was returned');
   }
 
+  /**
+   * Get server-rendered contextual links for the given contextual link ids.
+   *
+   * Copied from \Drupal\contextual\Tests\ContextualDynamicContextTest::renderContextualLinks().
+   *
+   * @param array $ids
+   *   An array of contextual link ids.
+   * @param string $current_path
+   *   The Drupal path for the page for which the contextual links are rendered.
+   *
+   * @return string
+   *   The response body.
+   */
+  protected function renderContextualLinks($ids, $current_path) {
+    // Build POST values.
+    $post = array();
+    for ($i = 0; $i < count($ids); $i++) {
+      $post['ids[' . $i . ']'] = $ids[$i];
+    }
+
+    // Serialize POST values.
+    foreach ($post as $key => $value) {
+      // Encode according to application/x-www-form-urlencoded
+      // Both names and values needs to be urlencoded, according to
+      // http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.1
+      $post[$key] = urlencode($key) . '=' . urlencode($value);
+    }
+    $post = implode('&', $post);
+
+    // Perform HTTP request.
+    return $this->curlExec(array(
+      CURLOPT_URL => url('contextual/render', array('absolute' => TRUE, 'query' => array('destination' => $current_path))),
+      CURLOPT_POST => TRUE,
+      CURLOPT_POSTFIELDS => $post,
+      CURLOPT_HTTPHEADER => array(
+        'Accept: application/json',
+        'Content-Type: application/x-www-form-urlencoded',
+      ),
+    ));
+  }
+
 }