[techtalks] Relax _VALID_URL

youtube_dl/extractor/techtalks.py

@@ -10,9 +10,9 @@ from ..utils import (
 
 
 class TechTalksIE(InfoExtractor):
-    _VALID_URL = r'https?://techtalks\.tv/talks/(?:[^/]*/)?(?P<id>\d+)/'
+    _VALID_URL = r'https?://techtalks\.tv/talks/(?:[^/]+/)?(?P<id>\d+)'
 
-    _TEST = {
+    _TESTS = [{
         'url': 'http://techtalks.tv/talks/learning-topic-models-going-beyond-svd/57758/',
         'info_dict': {
             'id': '57758',
@@ -38,7 +38,10 @@ class TechTalksIE(InfoExtractor):
             # rtmp download
             'skip_download': True,
         },
-    }
+    }, {
+        'url': 'http://techtalks.tv/talks/57758',
+        'only_matching': True,
+    }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)