Add tests and make sure they pass

beets/library.py

@@ -1016,7 +1016,8 @@ class Album(LibModel):
         # Move items.
         items = list(self.items())
         for item in items:
-            item.move(copy, link, basedir=basedir, with_album=False)
+            item.move(copy, link, basedir=basedir, with_album=False,
+                      fields_to_store=fields_to_store)
 
         # Move art.
         self.move_art(copy, link)

beets/ui/commands.py

@@ -1086,6 +1086,11 @@ def update_items(lib, query, album, move, pretend, fields):
     reflect the item's embedded tags.
     """
     with lib.transaction():
+        if move and fields is not None and 'path' not in fields:
+            # Special case: if an item needs to be moved, the path field has to
+            # updated; otherwise the new path will not be reflected in the
+            # database
+            fields.append('path')
         items, _ = _do_query(lib, query, album)
 
         # Walk through the items and pick up their changes.

test/test_ui.py

@@ -550,6 +550,26 @@ class UpdateTest(_common.TestCase):
         item = self.lib.items().get()
         self.assertTrue(b'differentTitle' not in item.path)
 
+    def test_selective_modified_metadata_moved(self):
+        mf = MediaFile(self.i.path)
+        mf.title = u'differentTitle'
+        mf.genre = u'differentGenre'
+        mf.save()
+        self._update(move=True, fields=['title'])
+        item = self.lib.items().get()
+        self.assertTrue(b'differentTitle' in item.path)
+        self.assertNotEqual(item.genre, u'differentGenre')
+
+    def test_selective_modified_metadata_not_moved(self):
+        mf = MediaFile(self.i.path)
+        mf.title = u'differentTitle'
+        mf.genre = u'differentGenre'
+        mf.save()
+        self._update(move=False, fields=['title'])
+        item = self.lib.items().get()
+        self.assertTrue(b'differentTitle' not in item.path)
+        self.assertNotEqual(item.genre, u'differentGenre')
+
     def test_modified_album_metadata_moved(self):
         mf = MediaFile(self.i.path)
         mf.album = u'differentAlbum'