Add torrent tests

Fixes #1128

storage/fakestorage.py

@@ -15,6 +15,15 @@ class FakeStorage(BaseStorageV2):
   def _init_path(self, path=None, create=False):
     return path
 
+  def get_direct_download_url(self, path, expires_in=60, requires_cors=False):
+    try:
+      if self.get_content('supports_direct_download') == 'true':
+        return 'http://somefakeurl'
+    except:
+      pass
+
+    return None
+
   def get_content(self, path):
     if not path in _FAKE_STORAGE_MAP:
       raise IOError('Fake file %s not found' % path)