function test_doBackups_and_pickupNoBackupsFile()
 {
     $oUpgrade = new OA_Upgrade();
     if (file_exists($oUpgrade->nobackupsFile)) {
         unlink($oUpgrade->nobackupsFile);
     }
     copy(MAX_PATH . '/lib/OA/Upgrade/tests/data/NOBACKUPS', $oUpgrade->nobackupsFile);
     $this->assertFalse($oUpgrade->_doBackups(), 'nobackups file wrongly detected');
     $this->assertTrue($oUpgrade->_pickupNoBackupsFile(), 'failed to pickup up nobackups file');
     $this->assertFalse(file_exists($oUpgrade->nobackupsFile), 'nobackups file not removed');
 }