Failed to run a specific test with mock.patch decorator using nose2

[jethrolam]

This is my test file test_mock.py that minimally reproduces the failure:

import unittest
from unittest.mock import patch

class TestMock(unittest.TestCase):

    @patch("urllib3.PoolManager")
    def test_foo(self, mock_urllib3_poolmanager):
        pass

When I use nose2 to run all tests in this file. Everything works.

bash-4.2# nose2 test_mock
.
----------------------------------------------------------------------
Ran 1 test in 0.102s

OK

But when I use nose2 to select a specific test to run. It throws an error.

bash-4.2# nose2 test_mock.TestMock.test_foo
E
======================================================================
ERROR: test_mock.transplant_class.<locals>.C (test_foo)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/var/lang/lib/python3.7/unittest/mock.py", line 1256, in patched
    return func(*args, **keywargs)
TypeError: test_foo() missing 1 required positional argument: 'mock_urllib3_poolmanager'

----------------------------------------------------------------------
Ran 1 test in 0.087s

FAILED (errors=1)

Any insight is greatly appreciated. Thanks!

[stefanholek]

The mock.patch issue has been fixed in PR #472.