[test] recursion tests added
[test] recursion tests added

GerHobbelt/director,tanzhihang/director,tanzhihang/director,pandoraui/director,sheldonzf/director,cpg1111/director,GerHobbelt/director,vitalsource/director,mylikes/director,fadeit/director,fadeit/director,noxryan/director,lzhengms/director,andradedev/director,webx32/director,webx32/director,maxogden/director,meleslilijing/director,sheldonzf/director,stonegithubs/director,kiritoe/director,apeace/director,mylikes/director,kiritoe/director,meleslilijing/director,stonegithubs/director,pocketjoso/director,flatiron/director,ks3dev/director,vitalsource/director,cpg1111/director,ks3dev/director,pocketjoso/director,andradedev/director,lzhengms/director,pandoraui/director