[Windows] DuplicateStdout failed without "pytest -s" (RDT-96)

[hfudev]

error message without "-s"

pytest --junit-xml=./test_app_results.xml --port=COM25 --embedded-services esp --target=esp32
=============================================== test session starts ===============================================
platform win32 -- Python 3.8.0, pytest-7.0.1, pluggy-1.0.0
rootdir: C:\github_repos\idf-extra-components\test_app
plugins: embedded-0.6.0rc0
collected 1 item

test_app.py E                                                                                                [100%]

===================================================== ERRORS ======================================================
___________________________________________ ERROR at setup of test_app ____________________________________________

self = <pytest_embedded.plugin.PytestEmbedded object at 0x0000022693DC9E20>
fixturedef = <FixtureDef argname='serial' scope='function' baseid=''>
request = <SubRequest 'serial' for <Function test_app>>

    @pytest.hookimpl(tryfirst=True)
    def pytest_fixture_setup(self, fixturedef: FixtureDef[Any], request: SubRequest):
        if fixturedef.argname != 'serial':
            return

        # inject the cache into the serial kwargs
        kwargs = self._pytest_fixturedef_get_kwargs(fixturedef, request)
        _class_cli_options = kwargs['_fixture_classes_and_options']

        # compatible to multi-dut
        if isinstance(_class_cli_options, ClassCliOptions):
            iterable_class_cli_options = [_class_cli_options]
        else:
            iterable_class_cli_options = _class_cli_options

        for _item in iterable_class_cli_options:
            _item_cls = _item.classes.get('serial')
            _item_kwargs = _item.kwargs.get('serial')

            if _item_cls is None or _item_kwargs is None:
                continue

            if _item_cls.__name__ == 'IdfSerial':  # use str to avoid ImportError
                _item_kwargs['port_target_cache'] = self._port_target_cache
                _item_kwargs['port_app_cache'] = self._port_app_cache
            elif _item_cls.__name__ == 'EspSerial':  # use str to avoid ImportError
                _item_kwargs['port_target_cache'] = self._port_target_cache

>       return self._pytest_fixturedef_exec(fixturedef, request, kwargs)

<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\plugin.py:1089:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\plugin.py:1052: in _pytest_fixturedef_exec
    result = call_fixture_func(fixturefunc, request, kwargs)
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\plugin.py:335: in wrapper
    res = func(*args, **kwargs)
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\plugin.py:904: in serial
    return cls(**_drop_none_kwargs(kwargs))
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded_serial_esp\serial.py:50: in __init__
    self.esp: esptool.ESPLoader = esptool.get_default_connected_device(
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\esptool.py:118: in get_default_connected_device
    print("Serial port %s" % each_port)
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\log.py:195: in write
    self.pexpect_proc.write(data)
<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\log.py:105: in write
    self.send(s)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <pytest_embedded.log.PexpectProcess object at 0x0000022693E516D0>, s = b'\n'

    def send(self, s: AnyStr) -> int:
        """
        Write to the pexpect process and log.

        Args:
            s: bytes or str

        Returns:
            number of written bytes.
        """
        if not s:
            return 0

        s = self._coerce_send_string(s)
        self._log(s, 'send')

        # for pytest logging
        _temp = sys.stdout
        sys.stdout = self.STDOUT  # ensure the following print uses system sys.stdout

        _s = to_str(s)
        prefix = ''
        if self.source:
            prefix = f'[{self.source}] ' + prefix
        if self._with_timestamp:
            prefix = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S') + ' ' + prefix

        if not self._added_prefix:
            _s = prefix + _s
            self._added_prefix = True
        _s = _s.replace('\n', '\n' + prefix)
        if _s.endswith(prefix):
            _s = _s.rsplit(prefix, maxsplit=1)[0]
            self._added_prefix = False

>       sys.stdout.write(_s)
E       OSError: [WinError 6] The handle is invalid

<USER>\.espressif\python_env\idf5.0_py3.8_env\lib\site-packages\pytest_embedded\log.py:89: OSError
------------- generated xml file: C:\github_repos\idf-extra-components\test_app\test_app_results.xml --------------
============================================= short test summary info =============================================
ERROR test_app.py::test_app - OSError: [WinError 6] The handle is invalid
================================================ 1 error in 0.44s =================================================

Everything is fine with "-s"