add unit tests to confirm #305
add unit tests to confirm #305

alyssaq/plottable,softwords/plottable,palantir/plottable,iobeam/plottable,gdseller/plottable,danmane/plottable,NextTuesday/plottable,onaio/plottable,jacqt/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,danmane/plottable,alyssaq/plottable,palantir/plottable,softwords/plottable,jacqt/plottable,palantir/plottable,gdseller/plottable,danmane/plottable,onaio/plottable,RobertoMalatesta/plottable,onaio/plottable,jacqt/plottable,alyssaq/plottable,softwords/plottable,iobeam/plottable,gdseller/plottable,iobeam/plottable,palantir/plottable