[youtube:playlist] Recognize ‘top tracks’ urls (closes #2332)

The list parameter starts with ‘MC’ and can have more characters after it, including dots

2 files changed, 9 insertions, 0 deletions

diff --git a/test/test_all_urls.py b/test/test_all_urls.py
index 94cbce6e8..dcce9ddb8 100644
--- a/test/test_all_urls.py
+++ b/test/test_all_urls.py
@@ -37,6 +37,8 @@ class TestAllURLsMatching(unittest.TestCase):
         assertPlaylist(u'https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC')
         assertPlaylist(u'https://www.youtube.com/watch?v=AV6J6_AeFEQ&playnext=1&list=PL4023E734DA416012') #668
         self.assertFalse('youtube:playlist' in self.matching_ies(u'PLtS2H6bU1M'))
+        # Top tracks
+        assertPlaylist('https://www.youtube.com/playlist?list=MCUS.20142101')
 
     def test_youtube_matching(self):
         self.assertTrue(YoutubeIE.suitable(u'PLtS2H6bU1M'))
diff --git a/test/test_youtube_lists.py b/test/test_youtube_lists.py
index de157f657..c9632ddf6 100644
--- a/test/test_youtube_lists.py
+++ b/test/test_youtube_lists.py
@@ -117,6 +117,13 @@ class TestYoutubeLists(unittest.TestCase):
         original_video = entries[0]
         self.assertEqual(original_video['id'], 'rjFaenf1T-Y')
 
+    def test_youtube_toptracks(self):
+        dl = FakeYDL()
+        ie = YoutubePlaylistIE(dl)
+        result = ie.extract('https://www.youtube.com/playlist?list=MCUS')
+        entries = result['entries']
+        self.assertEqual(len(entries), 100)
+
     def test_youtube_toplist(self):
         dl = FakeYDL()
         ie = YoutubeTopListIE(dl)