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

vendor/symfony/validator/Tests/Fixtures/FakeMetadataFactory.php

@@ -0,0 +1,72 @@
+<?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\Validator\Tests\Fixtures;
+
+use Symfony\Component\Validator\Exception\NoSuchMetadataException;
+use Symfony\Component\Validator\MetadataFactoryInterface;
+use Symfony\Component\Validator\MetadataInterface;
+
+class FakeMetadataFactory implements MetadataFactoryInterface
+{
+    protected $metadatas = array();
+
+    public function getMetadataFor($class)
+    {
+        $hash = null;
+
+        if (is_object($class)) {
+            $hash = spl_object_hash($class);
+            $class = get_class($class);
+        }
+
+        if (!is_string($class)) {
+            throw new NoSuchMetadataException(sprintf('No metadata for type %s', gettype($class)));
+        }
+
+        if (!isset($this->metadatas[$class])) {
+            if (isset($this->metadatas[$hash])) {
+                return $this->metadatas[$hash];
+            }
+
+            throw new NoSuchMetadataException(sprintf('No metadata for "%s"', $class));
+        }
+
+        return $this->metadatas[$class];
+    }
+
+    public function hasMetadataFor($class)
+    {
+        $hash = null;
+
+        if (is_object($class)) {
+            $hash = spl_object_hash($class);
+            $class = get_class($class);
+        }
+
+        if (!is_string($class)) {
+            return false;
+        }
+
+        return isset($this->metadatas[$class]) || isset($this->metadatas[$hash]);
+    }
+
+    public function addMetadata($metadata)
+    {
+        $this->metadatas[$metadata->getClassName()] = $metadata;
+    }
+
+    public function addMetadataForValue($value, MetadataInterface $metadata)
+    {
+        $key = is_object($value) ? spl_object_hash($value) : $value;
+        $this->metadatas[$key] = $metadata;
+    }
+}