Added unit tests for prefix filtering
Added unit tests for prefix filtering

facebook/xctool,kernandreas/xctool,duk42111/xctool,blighli/xctool,SuPair/xctool,PSPDFKit-labs/xctool,1yvT0s/xctool,1yvT0s/xctool,agreco/xctool,PSPDFKit-labs/xctool,Richardlihui/xctool,facebook/xctool,leopardpan/xctool,kernandreas/xctool,Richardlihui/xctool,kamoljan/xctool,PSPDFKit-labs/xctool,AutoScout24/xctool,githubdelegate/xctool,dvor/xctool,LegNeato/xctool,FiftyThree/xctool,kernandreas/xctool,modulexcite/xctool,FiftyThree/xctool,jspahrsummers/xctool,AutoScout24/xctool,yaoxiaoyong/xctool,githubdelegate/xctool,blighli/xctool,dvor/xctool,yaoxiaoyong/xctool,jspahrsummers/xctool,leopardpan/xctool,1yvT0s/xctool,leopardpan/xctool,yaoxiaoyong/xctool,kamoljan/xctool,duk42111/xctool,LegNeato/xctool,theiren46/xctool,PSPDFKit-labs/xctool,Monits/xctool,jspahrsummers/xctool,adamjernst/xctool,blighli/xctool,ekingo/xctool,modulexcite/xctool,agreco/xctool,duk42111/xctool,adamjernst/xctool,ekingo/xctool,Monits/xctool,SuPair/xctool,Monits/xctool,kamoljan/xctool,kernandreas/xctool,theiren46/xctool,adamjernst/xctool,Richardlihui/xctool,facebook/xctool,adamjernst/xctool,modulexcite/xctool,githubdelegate/xctool,SuPair/xctool,Monits/xctool,facebook/xctool,kamoljan/xctool,LegNeato/xctool,FiftyThree/xctool,theiren46/xctool,modulexcite/xctool,jspahrsummers/xctool,1yvT0s/xctool,FiftyThree/xctool,AutoScout24/xctool,theiren46/xctool,SuPair/xctool,facebook/xctool,dvor/xctool,agreco/xctool,blighli/xctool,ekingo/xctool,duk42111/xctool,LegNeato/xctool,Richardlihui/xctool,dvor/xctool,AutoScout24/xctool,PSPDFKit-labs/xctool,githubdelegate/xctool,facebook/xctool,yaoxiaoyong/xctool,agreco/xctool,ekingo/xctool,leopardpan/xctool