add test for non-existant file
add test for non-existant file

jbondc/shelljs,clkao/shelljs,brendandahl/shelljs,rezonant/shelljs,vinodpanicker/shelljs,panrafal/shelljs,Schoonology/shelljs,stephenmathieson/shelljs,zhangda89/shelljs,janl/shelljs,jcoreio/shelljs,jamon/shelljs,panrafal/shelljs,a-x-/shelljs,1000copy/shelljs,maxnordlund/shelljs,stephenmathieson/shelljs,jamon/shelljs,clkao/shelljs,matthewwithanm/shelljs,shepheb/shelljs,eisnerd/shelljs,mcanthony/shelljs,shepheb/shelljs,joaoafrmartins/shelljs,nilsbunger/shelljs,mrvisser/shelljs,nilsbunger/shelljs,Schoonology/shelljs,doxout/shelljs,node-proj/shelljs,madrobby/shelljs,jbondc/shelljs,joaoafrmartins/shelljs,xebitstudios/shelljs,lge88/shelljs,mrvisser/shelljs,ando-takahiro/shelljs,quietshu/shelljs,can3p/shelljs,blockloop/shelljs,moatazelmasry2/shizz,eisnerd/shelljs,sanemat/shelljs,maxnordlund/shelljs,moatazelmasry2/shizz,arturadib/shelljs,1000copy/shelljs,shelljs/shelljs,Zanisimo/shelljs,psema4/shelljs,freitagbr/shelljs,beni55/shelljs