match only the test url

youtube_dl/extractor/howstuffworks.py

@@ -48,14 +48,7 @@ class HowStuffWorksIE(InfoExtractor):
         },
         {
             'url': 'http://shows.howstuffworks.com/stuff-to-blow-your-mind/optical-illusions-video.htm',
-            'info_dict': {
-                'id': '855410',
-                'ext': 'mp4',
-                'title': 'Stuff to Blow Your Mind',
-                'description': 'When it comes to optical illusions it’s pretty easy to jailbreak the operating system of your mind and load a new program onto it. Find out why your visual system willingly makes errors in interpretation.',
-                'display_id': 'optical-illusions',
-                'thumbnail': 're:^https?://.*\.jpg$',
-            },
+            'only_matching': True,
         }
     ]