Need help: integrating unittest with setuptools

Sun Sep 1 04:19:35 EDT 2019

Hi, everybody:
I have met a problem while I ran `python setup.py test`:
	unittest.case.SkipTest: No module named 'winreg'
I ran the command in MacOS and my project is written for only UNIX-like systems. I don't use any Windows-specified API. How dose `winreg` come here?
In my `setup.py`:
		test_suite="test"
In my `test/test.py`:
	import unittest
	class TestAll(unittest.TestCase):
		def testall(self):
			return None
It works if I ran `python -m uniittest test.py` alone but raises the above exception if I ran `python setup.py test`.
I'm working on this for the whole day, searching for every keywords I can think of with Google but can't find why or how. Could you help me? Thanks.
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YX. D.