Check for PHP configuration before executing unit tests

tests/bootstrap.php

@@ -1,6 +1,4 @@
 <?php
-
-
 define('PHPUNIT_RUN', 1);
 
 $configDir = getenv('CONFIG_DIR');
@@ -8,6 +6,11 @@ if ($configDir) {
 	define('PHPUNIT_CONFIG_DIR', $configDir);
 }
 
+if(version_compare(phpversion(), '5.6.0', '>=') &&
+	ini_get('always_populate_raw_post_data') !== '-1') {
+	throw new Exception("'always_populate_raw_post_data' has to be set to '-1' in your php.ini");
+}
+
 require_once __DIR__ . '/../lib/base.php';
 
 // load minimum set of apps