Add tests to the list of allowed paths

tests/bootstrap.php

@@ -4,6 +4,7 @@ define('PHPUNIT_RUN', 1);
 
 require_once __DIR__.'/../../../lib/base.php';
 require_once __DIR__.'/../vendor/autoload.php';
+\OC::$loader->addValidRoot(OC::$SERVERROOT . '/tests');
 
 if(!class_exists('PHPUnit_Framework_TestCase')) {
 	require_once('PHPUnit/Autoload.php');