test that null range sums to 0
test that null range sums to 0

b2gills/roast,bitrauser/roast,skids/roast,skids/roast,dogbert17/roast,zostay/roast,zostay/roast,dankogai/roast,zostay/roast,dogbert17/roast,dankogai/roast,b2gills/roast,bitrauser/roast,perl6/roast,b2gills/roast,skids/roast,dankogai/roast