Add test remove and remove method

mopidy/backends/__init__.py

@@ -42,6 +42,13 @@ class BaseCurrentPlaylistController(object):
 
         self.playlist = Playlist(tracks=new_tracks)
 
+    def remove(self, position):
+        tracks = self.playlist.tracks
+
+        del tracks[position]
+
+        self.playlist = Playlist(tracks=tracks)
+
 class BasePlaybackController(object):
     PAUSED = 'paused'
     PLAYING = 'playing'

tests/backends/__init__.py

@@ -54,6 +54,8 @@ class BaseCurrentPlaylistControllerTest(object):
         self.controller.load(new_playlist)
         self.assertEqual(new_playlist, self.controller.playlist)
 
+    # FIXME test that player switches to playing new song
+
     @populate_playlist
     def test_move_single(self):
         tracks = self.controller.playlist.tracks
@@ -76,6 +78,14 @@ class BaseCurrentPlaylistControllerTest(object):
         self.assertEqual(tracks[1].uri, self.uris[0])
         self.assertEqual(tracks[2].uri, self.uris[1])
 
+    @populate_playlist
+    def test_remove(self):
+        track = self.controller.playlist.tracks[1]
+
+        self.controller.remove(1)
+
+        self.assertNotEqual(track, self.controller.playlist.tracks[1])
+
 class BasePlaybackControllerTest(object):
     uris = []
     backend_class = None