[soundcloud] sets pattern and tests

include tests (weekly + charts)
weekly with login worked before. but now also public weekly will work. charts and similar patterned sets as well

youtube_dlc/extractor/soundcloud.py

@@ -600,7 +600,7 @@ class SoundcloudPlaylistBaseIE(SoundcloudIE):
 
 
 class SoundcloudSetIE(SoundcloudPlaylistBaseIE):
-    _VALID_URL = r'https?://(?:(?:www|m)\.)?soundcloud\.com/(?P<uploader>[\w\d-]+)/sets/(?P<slug_title>[\w\d-]+)(?:/(?P<token>[^?/]+))?'
+    _VALID_URL = r'https?://(?:(?:www|m)\.)?soundcloud\.com/(?P<uploader>[\w\d-]+)/sets/(?P<slug_title>[:\w\d-]+)(?:/(?P<token>[^?/]+))?'
     IE_NAME = 'soundcloud:set'
     _TESTS = [{
         'url': 'https://soundcloud.com/the-concept-band/sets/the-royal-concept-ep',
@@ -613,6 +613,15 @@ class SoundcloudSetIE(SoundcloudPlaylistBaseIE):
     }, {
         'url': 'https://soundcloud.com/the-concept-band/sets/the-royal-concept-ep/token',
         'only_matching': True,
+    }, {
+        'url': 'https://soundcloud.com/discover/sets/weekly::flacmatic',
+        'only_matching': True,
+    }, {
+        'url': 'https://soundcloud.com/discover/sets/charts-top:all-music:de',
+        'only_matching': True,
+    }, {
+        'url': 'https://soundcloud.com/discover/sets/charts-top:hiphoprap:kr',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):