function test_createEmptyVarFile()
 {
     $oUpgrade = new OA_Upgrade();
     $this->assertTrue($oUpgrade->_createEmptyVarFile('TESTEMPTYVARFILE'), 'TESTEMPTYVARFILE');
     $this->assertTrue(file_exists(MAX_PATH . '/var/TESTEMPTYVARFILE'), '');
     if (file_exists(MAX_PATH . '/var/TESTEMPTYVARFILE')) {
         @unlink(MAX_PATH . '/var/TESTEMPTYVARFILE');
     }
 }