Fix test references into DataFileInterface
Fix test references into DataFileInterface

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