update test

Author: Bull1016

i18n.php

@@ -1,5 +1,8 @@
 <?php
 
+// Ensure variables are global even if this file is included within a function/method (like in PHPUnit)
+global $currentLang, $translations;
+
 if (!function_exists('getBrowserLanguage')) {
     function getBrowserLanguage()
     {
@@ -27,6 +30,6 @@ function getBrowserLanguage()
     function __($key)
     {
         global $translations;
-        return isset($translations[$key]) ? $translations[$key] : $key;
+        return (isset($translations) && isset($translations[$key])) ? $translations[$key] : $key;
     }
 }