Lazy extractors break test_download.py

[yan12125]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.07.02. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.07.02

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• Searched the bugtracker for similar issues including closed ones

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• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

$ python test/test_download.py TestDownload.test_Xuite
[Xuite] RGkzc1ZULTM4NjA5MTQuZmx2: Downloading webpage
[Xuite] flv config: Downloading XML
[info] Writing video description metadata as JSON to: test_Xuite_3860914.info.json
[debug] Invoking downloader on 'http://2.mms.vlog.xuite.net/video/d90029/RGkzc1ZULTM4NjA5MTQuZmx2?k=fd4343b3fdf413a5896e27881d5c545b&q=mp3'
[download] Destination: test_Xuite_3860914.mp3
[download] 100% of 10.00KiB in 00:00
.
----------------------------------------------------------------------
Ran 1 test in 4.490s

OK

$ make lazy-extractors                                
/usr/bin/env python devscripts/make_lazy_extractors.py youtube_dl/extractor/lazy_extractors.py
WARNING: Lazy loading extractors is an experimental feature that may not always work

$ python test/test_download.py TestDownload.test_Xuite
E
======================================================================
ERROR: test_Xuite (__main__.TestDownload):
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test/test_download.py", line 103, in test_template
    if not ie.working():
AttributeError: type object 'XuiteIE' has no attribute 'working'

----------------------------------------------------------------------
Ran 1 test in 0.000s

FAILED (errors=1)

$ youtube-dl --ignore-config -v test:xuite
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--ignore-config', '-v', 'test:xuite']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.06.25
[debug] Lazy loading extractors enabled
[debug] Git HEAD: 72d256c43
[debug] Python version 3.6.1 - Linux-4.11.5-1-ARCH-x86_64-with-arch
[debug] exe versions: avconv v13_dev0-1201-g61f589e31, avprobe v13_dev0-1201-g61f589e31, ffmpeg 3.3.2, ffprobe 3.3.2
[debug] Proxy map: {}
[TestURL] Test URL: http://vlog.xuite.net/play/RGkzc1ZULTM4NjA5MTQuZmx2
[Xuite] RGkzc1ZULTM4NjA5MTQuZmx2: Downloading webpage
[Xuite] flv config: Downloading XML
[debug] Invoking downloader on 'http://7.mms.vlog.xuite.net/video/d90029/RGkzc1ZULTM4NjA5MTQuZmx2?k=fd4343b3fdf413a5896e27881d5c545b&q=mp3'
[download] Destination: 孤單南半球-歐德陽-3860914.mp3
[download] 100% of 3.77MiB in 00:00

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Description of your issue, suggested solution and other information

As shown in the above log, lazy extractors break test_download.py.