Added tests for generator callbacks
Added tests for generator callbacks

ifduyue/bottle,defnull/bottle,bottlepy/bottle,adragomir/bottle,catroot/bottle,hayate/bottle,myzhan/bottle,hkmshb/bottle,StdioA/bottle,gaotongfei/bottle,samstav/bottle,catroot/bottle,enzzc/bottle,oz123/bottle,khirayama/bottle,adragomir/bottle,SmithSamuelM/bottle,prologic/bottle,bottlepy/bottle,mrdon/bottle,adragomir/bottle,wangjun/bottle,AWFU/bottle,CentricWebEstate/bottle,StdioA/bottle,fkazimierczak/bottle,CentricWebEstate/bottle,adampresley/bottle,ListFranz/bottle,prologic/bottle,myzhan/bottle,Inndy/bottle,kevinmel2000/bottle,ifduyue/bottle,enzzc/bottle,samstav/bottle,fkazimierczak/bottle,mefyl/bottle,kevinmel2000/bottle,khirayama/bottle,ericfrederich/bottle,kevintaw/bottle,mrdon/bottle,xsank/bottle,defnull/bottle,hayate/bottle,wangjun/bottle,kevintaw/bottle,adampresley/bottle,SamuelMarks/bottle,ListFranz/bottle,taisa007/bottle-ja,gaotongfei/bottle,taisa007/bottle-ja,AWFU/bottle,oz123/bottle,SmithSamuelM/bottle,SamuelMarks/bottle,hkmshb/bottle,mefyl/bottle,ericfrederich/bottle,Kjuly/bottle,Inndy/bottle,Kjuly/bottle