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

vendor/symfony/validator/Tests/ConstraintViolationTest.php

@@ -0,0 +1,55 @@
+<?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;
+
+use Symfony\Component\Validator\ConstraintViolation;
+
+class ConstraintViolationTest extends \PHPUnit_Framework_TestCase
+{
+    public function testToStringHandlesArrays()
+    {
+        $violation = new ConstraintViolation(
+            'Array',
+            '{{ value }}',
+            array('{{ value }}' => array(1, 2, 3)),
+            'Root',
+            'property.path',
+            null
+        );
+
+        $expected = <<<EOF
+Root.property.path:
+    Array
+EOF;
+
+        $this->assertSame($expected, (string) $violation);
+    }
+
+    public function testToStringHandlesArrayRoots()
+    {
+        $violation = new ConstraintViolation(
+            '42 cannot be used here',
+            'this is the message template',
+            array(),
+            array('some_value' => 42),
+            'some_value',
+            null
+        );
+
+        $expected = <<<EOF
+Array.some_value:
+    42 cannot be used here
+EOF;
+
+        $this->assertSame($expected, (string) $violation);
+    }
+}