finished tests for set_fields on importer
finished tests for set_fields on importer

pkess/beets,sampsyo/beets,shamangeorge/beets,sampsyo/beets,shamangeorge/beets,beetbox/beets,jackwilsdon/beets,SusannaMaria/beets,jackwilsdon/beets,ibmibmibm/beets,beetbox/beets,sampsyo/beets,jackwilsdon/beets,SusannaMaria/beets,sampsyo/beets,pkess/beets,shamangeorge/beets,shamangeorge/beets,SusannaMaria/beets,jackwilsdon/beets,pkess/beets,beetbox/beets,ibmibmibm/beets,SusannaMaria/beets,ibmibmibm/beets,ibmibmibm/beets,pkess/beets,beetbox/beets