Issue running unit test

Hi,

i'm trying to run unit test with version 2021.2.4. Below a very simple test class i made:

from mymodule import rm

import os.path
import tempfile
import unittest


class RmTestCase(unittest.TestCase):
    tmpfilepath = os.path.join(tempfile.gettempdir(), "tmp-testfile")

    def setUp(self):
        with open(self.tmpfilepath, "wb") as f:
            f.write(b"Delete me!")

    def test_rm(self):
        # remove the file
        rm(self.tmpfilepath)
        # test that it was actually removed
        self.assertFalse(os.path.isfile(self.tmpfilepath), "Failed to remove the file!")

mymodule.py:

import os

def rm(filename):
    os.remove(filename)

if i run test from terminal python -m unittest test_file.py no problem

but if i run from PyCharm i got this errors:

C:\Python37\python.exe "C:\Program Files\JetBrains\PyCharm Community Edition 2020.1\plugins\python-ce\helpers\pycharm\_jb_pytest_runner.py" --target test_class_decorator.py::RmTestCase
Testing started at 16:41 ...
Launching pytest with arguments test_class_decorator.py::RmTestCase in C:\Users\XXXXXX\Desktop\PY_SCRIPTS\Mockito
C:\Program Files\JetBrains\PyCharm Community Edition 2020.1\plugins\python-ce\helpers\pycharm\_jb_pytest_runner.py:33: DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.

  elif version.LooseVersion(pytest.__version__) >= version.LooseVersion("6.0"):
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\greenio\base.py", line 86, in set_nonblocking
INTERNALERROR>     setblocking = fd.setblocking
INTERNALERROR> AttributeError: 'GreenFileIO' object has no attribute 'setblocking'
INTERNALERROR> 
INTERNALERROR> During handling of the above exception, another exception occurred:
INTERNALERROR> 
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\greenio\base.py", line 93, in set_nonblocking
INTERNALERROR>     import fcntl
INTERNALERROR>   File "C:\Python37\lib\site-packages\fcntl.py", line 1, in <module>
INTERNALERROR>     import ffi
INTERNALERROR> ModuleNotFoundError: No module named 'ffi'
INTERNALERROR> 
INTERNALERROR> During handling of the above exception, another exception occurred:
INTERNALERROR> 
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "C:\Python37\lib\site-packages\_pytest\main.py", line 193, in wrap_session
INTERNALERROR>     config._do_configure()
INTERNALERROR>   File "C:\Python37\lib\site-packages\_pytest\config\__init__.py", line 778, in _do_configure
INTERNALERROR>     self.hook.pytest_configure.call_historic(kwargs=dict(config=self))
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\hooks.py", line 308, in call_historic
INTERNALERROR>     res = self._hookexec(self, self.get_hookimpls(), kwargs)
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\manager.py", line 93, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\manager.py", line 87, in <lambda>
INTERNALERROR>     firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\callers.py", line 208, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\callers.py", line 80, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "C:\Python37\lib\site-packages\pluggy\callers.py", line 187, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "C:\Python37\lib\site-packages\_pytest\faulthandler.py", line 25, in pytest_configure
INTERNALERROR>     config.fault_handler_stderr = os.fdopen(stderr_fd_copy, "w")
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\green\os.py", line 28, in fdopen
INTERNALERROR>     return greenio.GreenPipe(fd, *args, **kw)
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\greenio\py3.py", line 212, in GreenPipe
INTERNALERROR>     return _open(name, mode, buffering, encoding, errors, newline, closefd, opener)
INTERNALERROR>   File "C:\Python37\lib\_pyio.py", line 207, in open
INTERNALERROR>     closefd, opener=opener)
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\greenio\py3.py", line 49, in __init__
INTERNALERROR>     set_nonblocking(self)
INTERNALERROR>   File "C:\Python37\lib\site-packages\eventlet\greenio\base.py", line 100, in set_nonblocking
INTERNALERROR>     raise NotImplementedError("set_nonblocking() on a file object "
INTERNALERROR> NotImplementedError: set_nonblocking() on a file object with no setblocking() method (Windows pipes don't support non-blocking I/O)

Process finished with exit code 3

Empty suite

Can someone help me?