Fix test cases race condition
Fix test cases race condition

cacticouncil/pencilcode,sakagg/pencilcode,dweintrop/pencilcode,PencilCode/pencilcode,Dinuka2013513/pencilcode,cacticouncil/pencilcode,cacticouncil/pencilcode,Dinuka2013513/pencilcode,cacticouncil/pencilcode,xinan/pencilcode,xinan/pencilcode,PencilCode/pencilcode,sakagg/pencilcode,PencilCode/pencilcode,xinan/pencilcode,Dinuka2013513/pencilcode,dweintrop/pencilcode,PencilCode/pencilcode,dweintrop/pencilcode,xinan/pencilcode,sakagg/pencilcode,dweintrop/pencilcode,sakagg/pencilcode,Dinuka2013513/pencilcode