Add test for normal unit conversion
Add test for normal unit conversion

tomalrussell/smif,willu47/smif,tomalrussell/smif,tomalrussell/smif,tomalrussell/smif,willu47/smif,nismod/smif,willu47/smif,nismod/smif,nismod/smif,willu47/smif,nismod/smif