test: add test for "-n 0"
test: add test for "-n 0"

liyam/tail,42wim/tail,mathpl/tail,ActiveState/tail,ando-masaki/tail,bububa/tail,QLeelulu/tail,wfxiang08/tail,davidsansome/tail,bububa/tail,wrouesnel/tail,vektra/tail,bcandrea/tail,ekini/tail,mathpl/tail,miraclesu/tail,funkygao/tail,bfitzsimmons/tail,GeertJohan/tail,deepakm/tail,dim/tail,GeertJohan/tail,araddon/tail,flynn/tail,funkygao/tail,walmartlabs/tail,dim/tail,masahide/tail,rakutentech/tail