Adjust tests for using last in generator function of infix:<...>
Adjust tests for using last in generator function of infix:<...>

bitrauser/roast,dankogai/roast,laben/roast,cygx/roast,niner/roast,zostay/roast,niner/roast,cygx/roast,dankogai/roast,bitrauser/roast,niner/roast,dankogai/roast,perl6/roast,skids/roast,zostay/roast,laben/roast,laben/roast,cygx/roast,dogbert17/roast,skids/roast,b2gills/roast,skids/roast,zostay/roast,b2gills/roast,b2gills/roast,dogbert17/roast