+
+ # Range HTTP header may be ignored/unsupported by a webserver
+ # (e.g. extractor/scivee.py, extractor/bambuser.py).
+ # However, for a test we still would like to download just a piece of a file.
+ # To achieve this we limit data_len to _TEST_FILE_SIZE and manually control
+ # block size when downloading a file.
+ if is_test and data_len > self._TEST_FILE_SIZE:
+ data_len = self._TEST_FILE_SIZE
+