core: Don't allow TLIDs in queries, or integers

Handle this in tracklist.filter() which is the only API that allows number
and/or TLIDs.

mopidy/core/tracklist.py

@@ -422,16 +422,17 @@ class TracklistController(object):
         :rtype: list of :class:`mopidy.models.TlTrack`
         """
         criteria = criteria or kwargs
+        tlids = criteria.pop('tlid', [])
         validation.check_query(criteria)
+        validation.check_instances(tlids, int)
         # TODO: deprecate kwargs
 
         matches = self._tl_tracks
         for (key, values) in criteria.items():
-            if key == 'tlid':
-                matches = [ct for ct in matches if ct.tlid in values]
-            else:
-                matches = [
-                    ct for ct in matches if getattr(ct.track, key) in values]
+            matches = [
+                ct for ct in matches if getattr(ct.track, key) in values]
+        if tlids:
+            matches = [ct for ct in matches if ct.tlid in tlids]
         return matches
 
     def move(self, start, end, to_position):

mopidy/utils/validation.py

@@ -9,7 +9,7 @@ PLAYBACK_STATES = {'paused', 'stopped', 'playing'}
 
 QUERY_FIELDS = {
     'uri', 'track_name', 'album', 'artist', 'albumartist', 'composer',
-    'performer', 'track_no', 'genre', 'date', 'comment', 'any', 'tlid', 'name'}
+    'performer', 'track_no', 'genre', 'date', 'comment', 'any', 'name'}
 
 DISTINCT_FIELDS = {
     'artist', 'albumartist', 'album', 'composer', 'performer', 'date', 'genre'}
@@ -62,9 +62,7 @@ def check_query(arg, list_values=True):
     # TODO: normalize name  -> track_name
     # TODO: normalize value -> [value]
     # TODO: normalize blank -> [] or just remove field?
-    # TODO: normalize int -> str or remove int support?
     # TODO: remove list_values?
-    # TODO: don't allow for instance tlid field in all queries?
 
     if not isinstance(arg, collections.Mapping):
         raise exceptions.ValidationError(
@@ -83,10 +81,7 @@ def check_query(arg, list_values=True):
 
 
 def _check_query_value(key, arg, msg):
-    if isinstance(arg, compat.string_types):
-        if not arg.strip():
-            raise exceptions.ValidationError(msg.format(arg=arg, key=key))
-    elif not isinstance(arg, (int, long)):
+    if not isinstance(arg, compat.string_types) or not arg.strip():
         raise exceptions.ValidationError(msg.format(arg=arg, key=key))
 
 

tests/utils/test_validation.py

@@ -98,7 +98,7 @@ def test_check_mapping_error_message():
 
 
 def test_check_query_invalid_fields():
-    for value in 'wrong', 'bar', 'foo':
+    for value in 'wrong', 'bar', 'foo', 'tlid':
         with raises(exceptions.ValidationError):
             validation.check_query({value: []})