mpd: Allow 'count' without quotes around the 'tag' param

Fix hechtus/mopidy-gmusic#1

mopidy/frontends/mpd/protocol/music_db.py

@@ -39,7 +39,7 @@ def _artist_as_track(artist):
         artists=[artist])
 
 
-@handle_request(r'^count "(?P<tag>[^"]+)" "(?P<needle>[^"]*)"$')
+@handle_request(r'^count "?(?P<tag>[^"]+)"? "(?P<needle>[^"]*)"$')
 def count(context, tag, needle):
     """
     *musicpd.org, music database section:*
@@ -48,6 +48,10 @@ def count(context, tag, needle):
 
         Counts the number of songs and their total playtime in the db
         matching ``TAG`` exactly.
+
+    *GMPC:*
+
+    - does not add quotes around the tag argument.
     """
     return [('songs', 0), ('playtime', 0)]  # TODO
 

tests/frontends/mpd/protocol/music_db_test.py

@@ -12,6 +12,12 @@ class MusicDatabaseHandlerTest(protocol.BaseTestCase):
         self.assertInResponse('playtime: 0')
         self.assertInResponse('OK')
 
+    def test_count_without_quotes(self):
+        self.sendRequest('count tag "needle"')
+        self.assertInResponse('songs: 0')
+        self.assertInResponse('playtime: 0')
+        self.assertInResponse('OK')
+
     def test_findadd(self):
         self.backend.library.dummy_find_exact_result = SearchResult(
             tracks=[Track(uri='dummy:a', name='A')])