[douyutv] Extend _VALID_URL

youtube_dl/extractor/douyutv.py

@@ -10,7 +10,7 @@ from ..compat import (compat_str, compat_basestring)
 
 class DouyuTVIE(InfoExtractor):
     IE_DESC = '斗鱼'
-    _VALID_URL = r'https?://(?:www\.)?douyutv\.com/(?P<id>[A-Za-z0-9]+)'
+    _VALID_URL = r'https?://(?:www\.)?douyu(?:tv)?\.com/(?P<id>[A-Za-z0-9]+)'
     _TESTS = [{
         'url': 'http://www.douyutv.com/iseven',
         'info_dict': {
@@ -60,6 +60,9 @@ class DouyuTVIE(InfoExtractor):
         'params': {
             'skip_download': True,
         },
+    }, {
+        'url': 'http://www.douyu.com/xiaocang',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):