fix: don't fail when essentia did not extract data

Dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/mgoltzsche/beets-plugins:0.15.0
+FROM ghcr.io/mgoltzsche/beets-plugins:0.18.1
 
 # Install bats
 USER root:root

beetsplug/autogenre/__init__.py

@@ -203,8 +203,6 @@ def _item_genres(self, item, all, force, force_genre):
         if not genre:
             genre = item.get('genre')
         source = item.get('genre_source')
-        orig_genre = genre
-        orig_source = source
         if _filter_item(item, all, force):
             if force_genre is not None:
                 source = force_genre and 'user' or None
@@ -273,9 +271,13 @@ def _fix_remix_genre(self, item, genre):
         return genre, False
 
     def _essentia_genre(self, item):
-        if not item.get('bpm'): # run essentia analysis if result not known yet
+        if not item.get('bpm') or not item.get('genre_rosamerica'):
+            # Run essentia analysis if result not known yet.
             self._log.debug('Analyzing item using essentia: {}', item)
             self._xtractor._run_analysis(item)
+        if 'genre_rosamerica' not in item:
+            # Essentia analysis may not provide data in some cases.
+            return None
         # Use Essentia's mapped genre_rosamerica value
         genre_rosamerica = item.genre_rosamerica
         genre_rosamerica_probability = float(item.genre_rosamerica_probability)

tests/e2e/tests.bats

@@ -91,10 +91,19 @@ tempConfigWithAutoEnabled() {
 	# EttoreTechnoChannel - Hector Couto- Amanece
 	beet ytimport -q --quiet-fallback=asis https://www.youtube.com/watch?v=8CI2GjcCkuM
 	QUERY='title:Hector Couto- Amanece'
-	beet autogenre -f $QUERY
+	beet autogenre -f --no-lastgenre $QUERY
 	assertGenre "$QUERY" 'essentia | Electronic | Electronic, Hip Hop, House'
 }
 
+@test "don't fail when essentia analysis did not provide data" {
+	# Amadou & Mariam feat. K'naan - Africa
+	beet ytimport -q --quiet-fallback=asis https://www.youtube.com/watch?v=WJ-rI2i9VGE
+	QUERY='artist:Amadou title:Africa'
+	beet autogenre -f --no-lastgenre $QUERY
+	assertGenre "$QUERY" ''
+	# TODO: implement fallback to using the most common genre of other tracks of the same artist
+}
+
 
 @test 'specify genre manually' {
 	ALBUM='Reggae Jungle Drum and Bass Mix #9 New 2022'