Add destroy method to all backend pieces

mopidy/backends/__init__.py

@@ -41,6 +41,21 @@ class BaseBackend(object):
     #: List of URI prefixes this backend can handle.
     uri_handlers = []
 
+    def destroy(self):
+        if self.current_playlist:
+            self.current_playlist.destroy()
+
+        if self.library:
+            self.library.destroy()
+
+        if self.mixer:
+            self.mixer.destroy()
+
+        if self.playback:
+            self.playback.destroy()
+
+        if self.stored_playlists:
+            self.stored_playlists.destroy()
 
 class BaseCurrentPlaylistController(object):
     """
@@ -181,6 +196,9 @@ class BaseCurrentPlaylistController(object):
         random.shuffle(shuffled)
         self.playlist = self.playlist.with_(tracks=before+shuffled+after)
 
+    def destroy(self):
+        pass
+
 
 class BaseLibraryController(object):
     """
@@ -234,6 +252,9 @@ class BaseLibraryController(object):
         """
         raise NotImplementedError
 
+    def destroy(self):
+        pass
+
 
 class BasePlaybackController(object):
     """
@@ -483,6 +504,9 @@ class BasePlaybackController(object):
     def _stop(self):
         raise NotImplementedError
 
+    def destroy(self):
+        pass
+
 
 class BaseStoredPlaylistsController(object):
     """
@@ -594,3 +618,6 @@ class BaseStoredPlaylistsController(object):
         :rtype: list of :class:`mopidy.models.Playlist`
         """
         return filter(lambda p: query in p.name, self._playlists)
+
+    def destroy(self):
+        pass

mopidy/mixers/__init__.py

@@ -18,6 +18,9 @@ class BaseMixer(object):
             volume = 100
         self._set_volume(volume)
 
+    def destroy(self):
+        pass
+
     def _get_volume(self):
         """
         Return volume as integer in range [0, 100]. :class:`None` if unknown.

tests/backends/base.py

@@ -26,7 +26,7 @@ class BaseCurrentPlaylistControllerTest(object):
         assert len(self.tracks) >= 3, 'Need at least three tracks to run tests.'
 
     def tearDown(self):
-        self.backend.playback.destroy()
+        self.backend.destroy()
 
     def test_add(self):
         for track in self.tracks:
@@ -205,7 +205,7 @@ class BasePlaybackControllerTest(object):
             'First song needs to be at least 2000 miliseconds'
 
     def tearDown(self):
-        self.backend.playback.destroy()
+        self.backend.destroy()
 
     def test_initial_state_is_stopped(self):
         self.assertEqual(self.playback.state, self.playback.STOPPED)