Adding tests (#18182)
Adding tests (#18182)

* Adding tests

* Removing the System from System.Convert.

MaggieTsang/corefx,dhoehna/corefx,tijoytom/corefx,dhoehna/corefx,rahku/corefx,YoupHulsebos/corefx,nchikanov/corefx,twsouthwick/corefx,ViktorHofer/corefx,elijah6/corefx,BrennanConroy/corefx,yizhang82/corefx,seanshpark/corefx,stone-li/corefx,weltkante/corefx,Petermarcu/corefx,shimingsg/corefx,the-dwyer/corefx,jlin177/corefx,gkhanna79/corefx,Ermiar/corefx,BrennanConroy/corefx,nbarbettini/corefx,richlander/corefx,Ermiar/corefx,jlin177/corefx,dhoehna/corefx,MaggieTsang/corefx,dotnet-bot/corefx,krytarowski/corefx,Ermiar/corefx,krk/corefx,DnlHarvey/corefx,ViktorHofer/corefx,ViktorHofer/corefx,alexperovich/corefx,ptoonen/corefx,cydhaselton/corefx,mmitche/corefx,stone-li/corefx,krytarowski/corefx,rahku/corefx,fgreinacher/corefx,stephenmichaelf/corefx,wtgodbe/corefx,dotnet-bot/corefx,nchikanov/corefx,wtgodbe/corefx,weltkante/corefx,Ermiar/corefx,nbarbettini/corefx,cydhaselton/corefx,krytarowski/corefx,stephenmichaelf/corefx,ptoonen/corefx,cydhaselton/corefx,rjxby/corefx,ericstj/corefx,Ermiar/corefx,ravimeda/corefx,billwert/corefx,rjxby/corefx,billwert/corefx,richlander/corefx,yizhang82/corefx,ericstj/corefx,nchikanov/corefx,mazong1123/corefx,nchikanov/corefx,zhenlan/corefx,twsouthwick/corefx,Ermiar/corefx,wtgodbe/corefx,DnlHarvey/corefx,krk/corefx,stephenmichaelf/corefx,YoupHulsebos/corefx,jlin177/corefx,rahku/corefx,YoupHulsebos/corefx,yizhang82/corefx,ptoonen/corefx,richlander/corefx,krytarowski/corefx,richlander/corefx,YoupHulsebos/corefx,krk/corefx,rahku/corefx,billwert/corefx,parjong/corefx,tijoytom/corefx,YoupHulsebos/corefx,JosephTremoulet/corefx,the-dwyer/corefx,ericstj/corefx,rjxby/corefx,billwert/corefx,JosephTremoulet/corefx,ericstj/corefx,mazong1123/corefx,mmitche/corefx,mazong1123/corefx,parjong/corefx,ericstj/corefx,MaggieTsang/corefx,shimingsg/corefx,mmitche/corefx,nbarbettini/corefx,rubo/corefx,ptoonen/corefx,dhoehna/corefx,twsouthwick/corefx,ericstj/corefx,krytarowski/corefx,stephenmichaelf/corefx,stone-li/corefx,gkhanna79/corefx,seanshpark/corefx,seanshpark/corefx,krk/corefx,Petermarcu/corefx,rubo/corefx,Jiayili1/corefx,fgreinacher/corefx,YoupHulsebos/corefx,DnlHarvey/corefx,krk/corefx,shimingsg/corefx,tijoytom/corefx,billwert/corefx,parjong/corefx,rubo/corefx,rahku/corefx,ViktorHofer/corefx,tijoytom/corefx,elijah6/corefx,shimingsg/corefx,MaggieTsang/corefx,parjong/corefx,seanshpark/corefx,nchikanov/corefx,nbarbettini/corefx,krk/corefx,twsouthwick/corefx,mmitche/corefx,yizhang82/corefx,ptoonen/corefx,cydhaselton/corefx,rjxby/corefx,yizhang82/corefx,the-dwyer/corefx,zhenlan/corefx,rjxby/corefx,krk/corefx,fgreinacher/corefx,mmitche/corefx,MaggieTsang/corefx,billwert/corefx,alexperovich/corefx,alexperovich/corefx,nbarbettini/corefx,richlander/corefx,rubo/corefx,stone-li/corefx,axelheer/corefx,ravimeda/corefx,wtgodbe/corefx,dhoehna/corefx,Jiayili1/corefx,zhenlan/corefx,elijah6/corefx,mmitche/corefx,JosephTremoulet/corefx,YoupHulsebos/corefx,axelheer/corefx,rahku/corefx,zhenlan/corefx,seanshpark/corefx,wtgodbe/corefx,wtgodbe/corefx,JosephTremoulet/corefx,jlin177/corefx,dhoehna/corefx,parjong/corefx,ViktorHofer/corefx,yizhang82/corefx,zhenlan/corefx,gkhanna79/corefx,shimingsg/corefx,DnlHarvey/corefx,elijah6/corefx,ericstj/corefx,Jiayili1/corefx,the-dwyer/corefx,gkhanna79/corefx,ravimeda/corefx,Petermarcu/corefx,mazong1123/corefx,parjong/corefx,ravimeda/corefx,nbarbettini/corefx,BrennanConroy/corefx,jlin177/corefx,krytarowski/corefx,mazong1123/corefx,cydhaselton/corefx,mazong1123/corefx,twsouthwick/corefx,tijoytom/corefx,jlin177/corefx,ViktorHofer/corefx,axelheer/corefx,dotnet-bot/corefx,rjxby/corefx,ravimeda/corefx,Jiayili1/corefx,weltkante/corefx,ptoonen/corefx,twsouthwick/corefx,dotnet-bot/corefx,shimingsg/corefx,ravimeda/corefx,shimingsg/corefx,alexperovich/corefx,zhenlan/corefx,yizhang82/corefx,ViktorHofer/corefx,cydhaselton/corefx,dotnet-bot/corefx,richlander/corefx,tijoytom/corefx,Petermarcu/corefx,gkhanna79/corefx,nchikanov/corefx,alexperovich/corefx,cydhaselton/corefx,weltkante/corefx,DnlHarvey/corefx,axelheer/corefx,Petermarcu/corefx,seanshpark/corefx,weltkante/corefx,parjong/corefx,twsouthwick/corefx,nbarbettini/corefx,the-dwyer/corefx,Jiayili1/corefx,MaggieTsang/corefx,stephenmichaelf/corefx,Jiayili1/corefx,axelheer/corefx,mazong1123/corefx,rjxby/corefx,dotnet-bot/corefx,mmitche/corefx,JosephTremoulet/corefx,jlin177/corefx,ravimeda/corefx,richlander/corefx,tijoytom/corefx,axelheer/corefx,elijah6/corefx,zhenlan/corefx,gkhanna79/corefx,weltkante/corefx,elijah6/corefx,Petermarcu/corefx,the-dwyer/corefx,ptoonen/corefx,JosephTremoulet/corefx,Jiayili1/corefx,DnlHarvey/corefx,stephenmichaelf/corefx,nchikanov/corefx,stephenmichaelf/corefx,Petermarcu/corefx,billwert/corefx,Ermiar/corefx,the-dwyer/corefx,gkhanna79/corefx,rahku/corefx,MaggieTsang/corefx,fgreinacher/corefx,JosephTremoulet/corefx,seanshpark/corefx,weltkante/corefx,rubo/corefx,elijah6/corefx,dhoehna/corefx,krytarowski/corefx,stone-li/corefx,stone-li/corefx,alexperovich/corefx,dotnet-bot/corefx,alexperovich/corefx,DnlHarvey/corefx,wtgodbe/corefx,stone-li/corefx