gl tstng s sftwr tstng prctc tht fllws th prncpls f gl sftwr dvlpmnt. gl tstng nvlvs ll mmbrs f crss-fnctnl gl tm, wth spcl xprts cntrbtd by tstrs, t nsr dlvrng th bsnss vl dsrd by th cstmr t frqnt ntrvls, wrkng t sstnbl pc. Spcfctn by xmpl s sd t cptr xmpls f dsrd nd ndsrd bhvr nd gd cdng.