modified constant definition

tests/LoadTest.php

@@ -70,7 +70,9 @@ class LoadTest extends PHPUnit_Framework_TestCase
         $autoload = require(self::$file);
         $this->assertNotEmpty($autoload);
         
+        if(!defined('DEBUG')) {
             define('DEBUG', true);
+        }
         Load::autoload('Func');
         Load::autoload('Captcha');        
     }