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

vendor/behat/mink/src/Exception/ElementHtmlException.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of the Mink package.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Mink\Exception;
+
+use Behat\Mink\Driver\DriverInterface;
+use Behat\Mink\Element\Element;
+use Behat\Mink\Session;
+
+/**
+ * Exception thrown when an expectation on the HTML of an element fails.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+class ElementHtmlException extends ExpectationException
+{
+    /**
+     * Element instance.
+     *
+     * @var Element
+     */
+    protected $element;
+
+    /**
+     * Initializes exception.
+     *
+     * @param string                  $message   optional message
+     * @param DriverInterface|Session $driver    driver instance
+     * @param Element                 $element   element
+     * @param \Exception              $exception expectation exception
+     */
+    public function __construct($message, $driver, Element $element, \Exception $exception = null)
+    {
+        $this->element = $element;
+
+        parent::__construct($message, $driver, $exception);
+    }
+
+    protected function getContext()
+    {
+        return $this->element->getOuterHtml();
+    }
+}