Add tests for Supply.reduce
Add tests for Supply.reduce

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