Added tests for underscore methods with virtuals
Added tests for underscore methods with virtuals

VideoAmp/bookshelf,nodeonly/bookshelf,tbutman/bookshelf,skevy/bookshelf,rbong/bookshelf,sxhao/bookshelf,chuym/bookshelf,tjwudi/bookshelf,TNuzzi/bookshelf,zdespolit/bookshelf,stonegithubs/bookshelf,MadcapJake/bookshelf,joshturn/bookshelf,dougshamoo/bookshelf,zdespolit/bookshelf,vellotis/bookshelf,VideoAmp/bookshelf,lanetix/bookshelf,tbutman/bookshelf,bsiddiqui/bookshelf,MadcapJake/bookshelf,stridentbean/bookshelf,chrisbroome/bookshelf,rbong/bookshelf,nodeonly/bookshelf,dougshamoo/bookshelf,skevy/bookshelf,sanchesic89/bookshelf,nodeonly/bookshelf,stonegithubs/bookshelf,shadedprofit/bookshelf,mdboop/bookshelf,princesust/bookshelf,TinOo512/bookshelf,offlinehacker/bookshelf,offlinehacker/bookshelf,MadcapJake/bookshelf,sanchesic89/bookshelf,princesust/bookshelf,lanetix/bookshelf,bookshelf/bookshelf,TinOo512/bookshelf,patbenatar/bookshelf,jadengore/bookshelf,dougshamoo/bookshelf,apla/bookshelf,patbenatar/bookshelf,offlinehacker/bookshelf,chuym/bookshelf,seegno-forks/bookshelf,stonegithubs/bookshelf,mdboop/bookshelf,vellotis/bookshelf,TNuzzi/bookshelf,shaunstanislaus/bookshelf,joshturn/bookshelf,patbenatar/bookshelf,sxhao/bookshelf,chuym/bookshelf,cspotcode/bookshelf,sanchesic89/bookshelf,princesust/bookshelf,apla/bookshelf,zubeio/bookshelf,seegno-forks/bookshelf,jadengore/bookshelf,jordansexton/bookshelf,stridentbean/bookshelf,jordansexton/bookshelf,cspotcode/bookshelf,tjwudi/bookshelf,shadedprofit/bookshelf,tbutman/bookshelf,mdboop/bookshelf,bookshelf/bookshelf,lanetix/bookshelf,zubeio/bookshelf,shadedprofit/bookshelf,bsiddiqui/bookshelf,stridentbean/bookshelf,sxhao/bookshelf,shaunstanislaus/bookshelf,zubeio/bookshelf,tgriesser/bookshelf,tgriesser/bookshelf,chrisbroome/bookshelf,zdespolit/bookshelf,shaunstanislaus/bookshelf,vellotis/bookshelf,jadengore/bookshelf,TNuzzi/bookshelf,skevy/bookshelf,tjwudi/bookshelf,joshturn/bookshelf,VideoAmp/bookshelf