Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/dom-crawler/Tests/Field/FormFieldTestCase.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DomCrawler\Tests\Field;
+
+class FormFieldTestCase extends \PHPUnit_Framework_TestCase
+{
+    protected function createNode($tag, $value, $attributes = array())
+    {
+        $document = new \DOMDocument();
+        $node = $document->createElement($tag, $value);
+
+        foreach ($attributes as $name => $value) {
+            $node->setAttribute($name, $value);
+        }
+
+        return $node;
+    }
+}