AttributeError: type object 'TestDownload' has no attribute 'test_yourextractor'

[Wandang]

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Description of your issue, suggested solution and other information

I am trying to contribute to this project (adding extractor) and encounter issues from the start.

The contribution page declares under point 6:

Run python test/test_download.py TestDownload.test_YourExtractor. This should fail at first, but you can continually re-run it until you're done. If you decide to add more than one test, then rename _TEST to _TESTS and make it into a list of dictionaries. The tests will then be named TestDownload.test_YourExtractor, TestDownload.test_YourExtractor_1, TestDownload.test_YourExtractor_2, etc.

I tried this after adding a new extractorfile named streammydirtyhobby.py with the default contend suggested in the contribution page (changed the classname ofc) and adding the import to the extractor.py

Unfortunately I get this cli output:

$ python test/test_download.py TestDownload.test_StreamMyDirtyHobbyIE
Traceback (most recent call last):
  File "test/test_download.py", line 265, in <module>
    unittest.main()
  File "/usr/lib/python2.7/unittest/main.py", line 94, in __init__
    self.parseArgs(argv)
  File "/usr/lib/python2.7/unittest/main.py", line 149, in parseArgs
    self.createTests()
  File "/usr/lib/python2.7/unittest/main.py", line 158, in createTests
    self.module)
  File "/usr/lib/python2.7/unittest/loader.py", line 130, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib/python2.7/unittest/loader.py", line 100, in loadTestsFromName
    parent, obj = obj, getattr(obj, part)
AttributeError: type object 'TestDownload' has no attribute 'test_StreamMyDirtyHobbyIE'

So I tried this with another already finished extractor like StreamangoIE and StreamcloudIE. Both crashed with the same error.

Sorry if I am missing something trivial here. This is my first approach in coding for an open source project and I am still reading into code guidelines/workflow.

[dstftw]

No IE must be at the end.