VSCode Pytest Discovery Fails when using pytest-describe

[kassi]

Type: Bug

Behaviour

I'm working on a poetry project with pytest and pytest-describe.
Tests are not recognized by the python extension.

My .vscode/settings.json contains

"python.experiments.optInto": ["pythonTestAdapter"],

However, despite setting "Trace" in VSCode Output "Python", there's no "Experiment" in the output.

Steps to reproduce:

1. Set up a project with pytest-describe.
2. Configure pytest in pyproject.toml with

[tool.pytest.ini_options]
describe_prefixes = [
    "describe_",
    "when_",
    "with_",
    "without_",
    "if_",
    "unless_",
    "for_",
]

3. Create test file in tests/convert/test_convert_command.py with nested describe structure, e.g.

def describe_convert_command():
    @pytest.fixture
    def content():
        return None
    @pytest.fixture
    def from_format():
        return None
    @pytest.fixture
    def command(content, from_format):
        return ConvertCommand(content=content, from_format=from_format)
    @pytest.fixture
    def result(command):
        return command.convert()
    def describe_init():
        def with_format_go_licenses():
            @pytest.fixture
            def from_format():
                return "go-licenses"
            def with_valid_invalid_file_format():
                @pytest.fixture
                def content():
                    return inspect.cleandoc("""some key\nsome value""")

                def it_raises_a_value_error(command):
                    with pytest.raises(ValueError):
                        command.convert()

Diagnostic data

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

2024-12-27 18:19:53.418 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:19:53.771 [debug] Testing: Trigger refresh after saving /u/ks/src/myproject/tests/convert/test_convert_command.py
2024-12-27 18:19:54.026 [debug] Delay Trigger[Refresh Test Data]: triggered=12, called=12
2024-12-27 18:19:54.026 [info] Discover tests for workspace name: myproject - uri: /u/ks/src/myproject/tests/convert/test_convert_command.py
2024-12-27 18:19:54.026 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:19:54.026 [debug] could not find a pixi interpreter for the interpreter at /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:19:54.028 [debug] Activation Commands received source /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/activate for shell bash, resource /u/ks/src/myproject and interpreter /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:19:54.028 [debug] Activating Environment to capture Environment variables, . /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/activate && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python /u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/printEnvVariables.py
2024-12-27 18:19:54.028 [info] > . ~/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/activate && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/printEnvVariables.py
2024-12-27 18:19:54.028 [info] shell: bash
2024-12-27 18:19:54.083 [info] > ~/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python ~/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/run_adapter.py discover pytest -- --rootdir . -s --cache-clear
2024-12-27 18:19:54.083 [info] cwd: .
2024-12-27 18:19:54.366 [error] Error discovering pytest tests:
 n [Error]: ============================= test session starts ==============================
platform darwin -- Python 3.12.4, pytest-8.3.4, pluggy-1.5.0
rootdir: /u/ks/src/myproject
configfile: pyproject.toml
plugins: describe-2.2.0, cov-6.0.0, spec-4.0.0, mock-3.14.0
The Python extension has run into an unexpected situation
while processing a pytest node during test discovery.  Please
Please open an issue at:
  https://github.com/microsoft/vscode-python/issues
and paste the following output there.

nodeid: tests/convert/test_convert_command.py::describe_convert_command::describe_init::with_format_go_licenses::with_invalid_file_format::it_raises_a_value_error
kind: ('function', False)
class: Function
name: it_raises_a_value_error
fspath: /u/ks/src/myproject/tests/convert/test_convert_command.py
location: ('tests/convert/test_convert_command.py', 53, 'it_raises_a_value_error')
function: <function describe_convert_command.<locals>.describe_init.<locals>.with_format_go_licenses.<locals>.with_invalid_file_format.<locals>.it_raises_a_value_error at 0x106c56a20>
markers: []
user_properties: []
attrnames: ['_ALLOW_MARKERS', '__abstractmethods__', '__annotations__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getstate__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__slots__', '__str__', '__subclasshook__', '__weakref__', '_abc_impl', '_check_item_and_collector_diamond_inheritance', '_fixtureinfo', '_getinstance', '_getobj', '_initrequest', '_instance', '_nodeid', '_obj', '_pyfuncitem', '_pytest_diamond_inheritance_warning_shown', '_report_sections', '_repr_failure_py', '_request', '_store', '_traceback_filter', 'add_marker', 'add_report_section', 'addfinalizer', 'cls', 'config', 'extra_keyword_matches', 'fixturenames', 'from_parent', 'fspath', 'funcargs', 'function', 'get_closest_marker', 'getmodpath', 'getparent', 'ihook', 'instance', 'iter_markers', 'iter_markers_with_node', 'iter_parents', 'keywords', 'listchain', 'listextrakeywords', 'listnames', 'location', 'module', 'name', 'nextitem', 'nodeid', 'obj', 'originalname', 'own_markers', 'parent', 'path', 'reportinfo', 'repr_failure', 'runtest', 'session', 'setup', 'stash', 'teardown', 'user_properties', 'warn']

extra info:
fullname: it_raises_a_value_error
testfunc: describe_convert_command.describe_init.with_format_go_licenses.with_invalid_file_format.it_raises_a_value_error
parameterized:

traceback:
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/run_adapter.py", line 18, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/__main__.py", line 96, in main
    parents, result = run(toolargs, **subargs)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 29, in discover
    ec = _pytest_main(pytestargs, [_plugin])
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/config/__init__.py", line 175, in main
    ret: ExitCode | int = config.hook.pytest_cmdline_main(config=config)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 330, in pytest_cmdline_main
    return wrap_session(config, _main)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 283, in wrap_session
    session.exitstatus = doit(config, session) or 0
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 336, in _main
    config.hook.pytest_collection(session=session)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 347, in pytest_collection
    session.perform_collect()
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 812, in perform_collect
    hook.pytest_collection_modifyitems(
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 86, in pytest_collection_modifyitems
    test, parents = self.parse_item(item)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 71, in parse_item
    return parse_item(item)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 182, in parse_item
    raise should_never_reach_here(
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 130, in should_never_reach_here
    traceback.print_stack()
collected 71 items

<Dir myproject>
  <Package tests>
    <Dir convert>
      <Module test_convert_command.py>
        <DescribeBlock 'describe_convert_command'>
          <DescribeBlock 'describe_init'>
            <DescribeBlock 'with_format_go_licenses'>
              <DescribeBlock 'with_invalid_file_format'>
                <Function it_raises_a_value_error>
              <DescribeBlock 'with_missing_required_fields'>
                <Function it_raises_a_value_error>
              <DescribeBlock 'with_valid_content'>
                <Function it_returns_correct_licenses>
    ...some more modules listed
            <DescribeBlock 'with_whitelisted_package'>
              <Function it_returns_false>
              <Function it_has_warnings>
The Python extension has run into an unexpected situation
while processing a pytest node during test discovery.  Please
Please open an issue at:
  https://github.com/microsoft/vscode-python/issues
and paste the following output there.

nodeid: tests/convert/test_convert_command.py::describe_convert_command::describe_init::with_format_go_licenses::with_invalid_file_format::it_raises_a_value_error
kind: ('function', False)
class: Function
name: it_raises_a_value_error
fspath: /u/ks/src/myproject/tests/convert/test_convert_command.py
location: ('tests/convert/test_convert_command.py', 53, 'it_raises_a_value_error')
function: <function describe_convert_command.<locals>.describe_init.<locals>.with_format_go_licenses.<locals>.with_invalid_file_format.<locals>.it_raises_a_value_error at 0x106c56a20>
markers: []
user_properties: []
attrnames: ['_ALLOW_MARKERS', '__abstractmethods__', '__annotations__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getstate__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__slots__', '__str__', '__subclasshook__', '__weakref__', '_abc_impl', '_check_item_and_collector_diamond_inheritance', '_fixtureinfo', '_getinstance', '_getobj', '_initrequest', '_instance', '_nodeid', '_obj', '_pyfuncitem', '_pytest_diamond_inheritance_warning_shown', '_report_sections', '_repr_failure_py', '_request', '_store', '_traceback_filter', 'add_marker', 'add_report_section', 'addfinalizer', 'cls', 'config', 'extra_keyword_matches', 'fixturenames', 'from_parent', 'fspath', 'funcargs', 'function', 'get_closest_marker', 'getmodpath', 'getparent', 'ihook', 'instance', 'iter_markers', 'iter_markers_with_node', 'iter_parents', 'keywords', 'listchain', 'listextrakeywords', 'listnames', 'location', 'module', 'name', 'nextitem', 'nodeid', 'obj', 'originalname', 'own_markers', 'parent', 'path', 'reportinfo', 'repr_failure', 'runtest', 'session', 'setup', 'stash', 'teardown', 'user_properties', 'warn']

extra info:
fullname: it_raises_a_value_error
testfunc: describe_convert_command.describe_init.with_format_go_licenses.with_invalid_file_format.it_raises_a_value_error
parameterized:

traceback:
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/run_adapter.py", line 18, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/__main__.py", line 96, in main
    parents, result = run(toolargs, **subargs)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 29, in discover
    ec = _pytest_main(pytestargs, [_plugin])
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/config/__init__.py", line 175, in main
    ret: ExitCode | int = config.hook.pytest_cmdline_main(config=config)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 330, in pytest_cmdline_main
    return wrap_session(config, _main)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 283, in wrap_session
    session.exitstatus = doit(config, session) or 0
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 336, in _main
    config.hook.pytest_collection(session=session)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 347, in pytest_collection
    session.perform_collect()
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 819, in perform_collect
    hook.pytest_collection_finish(session=self)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 101, in pytest_collection_finish
    test, parents = self.parse_item(item)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 71, in parse_item
    return parse_item(item)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 182, in parse_item
    raise should_never_reach_here(
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 130, in should_never_reach_here
    traceback.print_stack()
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 812, in perform_collect
INTERNALERROR>     hook.pytest_collection_modifyitems(
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 139, in _multicall
INTERNALERROR>     raise exception.with_traceback(exception.__traceback__)
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/cacheprovider.py", line 443, in pytest_collection_modifyitems
INTERNALERROR>     res = yield
INTERNALERROR>           ^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/cacheprovider.py", line 373, in pytest_collection_modifyitems
INTERNALERROR>     res = yield
INTERNALERROR>           ^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>           ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 86, in pytest_collection_modifyitems
INTERNALERROR>     test, parents = self.parse_item(item)
INTERNALERROR>                     ^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 71, in parse_item
INTERNALERROR>     return parse_item(item)
INTERNALERROR>            ^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 182, in parse_item
INTERNALERROR>     raise should_never_reach_here(
INTERNALERROR> NotImplementedError: Unexpected pytest node (see printed output).
INTERNALERROR> 
INTERNALERROR> During handling of the above exception, another exception occurred:
INTERNALERROR> 
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 283, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>                          ^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 336, in _main
INTERNALERROR>     config.hook.pytest_collection(session=session)
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 139, in _multicall
INTERNALERROR>     raise exception.with_traceback(exception.__traceback__)
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/logging.py", line 790, in pytest_collection
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/warnings.py", line 121, in pytest_collection
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/config/__init__.py", line 1417, in pytest_collection
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>           ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 347, in pytest_collection
INTERNALERROR>     session.perform_collect()
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/_pytest/main.py", line 819, in perform_collect
INTERNALERROR>     hook.pytest_collection_finish(session=self)
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 139, in _multicall
INTERNALERROR>     raise exception.with_traceback(exception.__traceback__)
INTERNALERROR>   File "/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/lib/python3.12/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>           ^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 101, in pytest_collection_finish
INTERNALERROR>     test, parents = self.parse_item(item)
INTERNALERROR>                     ^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 71, in parse_item
INTERNALERROR>     return parse_item(item)
INTERNALERROR>            ^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_pytest_item.py", line 182, in parse_item
INTERNALERROR>     raise should_never_reach_here(
INTERNALERROR> NotImplementedError: Unexpected pytest node (see printed output).

========================= 71 tests collected in 0.07s ==========================

Traceback (most recent call last):
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/run_adapter.py", line 18, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/__main__.py", line 96, in main
    parents, result = run(toolargs, **subargs)
                      ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/adapter/pytest/_discovery.py", line 42, in discover
    raise Exception(f"pytest discovery failed (exit code {ec})")
Exception: pytest discovery failed (exit code 3)

    at ChildProcess.<anonymous> (/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/src/client/common/process/rawProcessApis.ts:151:29)
    at Object.onceWrapper (node:events:633:26)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess.emit (node:domain:489:12)
    at maybeClose (node:internal/child_process:1104:16)
    at Socket.<anonymous> (node:internal/child_process:456:11)
    at Socket.emit (node:events:518:28)
    at Socket.emit (node:domain:489:12)
    at Pipe.<anonymous> (node:net:343:12)
    at Pipe.callbackTrampoline (node:internal/async_hooks:130:17)
2024-12-27 18:22:04.844 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:22:41.199 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:23:54.624 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:23:54.625 [info] Running installed packages checker:  {
  id: '/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python',
  sysPrefix: '/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12',
  envType: 'Poetry',
  envName: 'myproject-ido50-uZ-py3.12',
  envPath: '/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12',
  path: '/u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python',
  architecture: 3,
  sysVersion: '3.12.4 (main, Aug  1 2024, 08:33:17) [Clang 15.0.0 (clang-1500.3.9.4)]',
  version: {
    raw: '3.12.4',
    major: 3,
    minor: 12,
    patch: 4,
    build: [],
    prerelease: [ 'final', '0' ]
  },
  displayName: "Python 3.12.4 ('myproject-ido50-uZ-py3.12')",
  detailedDisplayName: "Python 3.12.4 ('myproject-ido50-uZ-py3.12': Poetry)",
  type: 'Virtual'
} /u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/installed_check.py /u/ks/src/myproject/pyproject.toml
2024-12-27 18:23:54.625 [info] > ~/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python ~/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/installed_check.py ./pyproject.toml
2024-12-27 18:23:54.631 [debug] Found cached env for /u/ks/Library/Caches/pypoetry/virtualenvs/myproject-ido50-uZ-py3.12/bin/python
2024-12-27 18:23:54.732 [debug] Installed packages check result:
 []

Extension version: 2024.22.1
VS Code version: Code 1.96.2 (fabdb6a30b49f79a7aba0f2ad9df9b399473380f, 2024-12-19T10:22:47.216Z)
OS version: Darwin arm64 23.4.0
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.12.4
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Poetry
• Value of the python.languageServer setting: Default

User Settings

venvPath: "<placeholder>"

languageServer: "Pylance"

testing
• pytestEnabled: true
• unittestEnabled: true

terminal
• activateEnvironment: false

experiments
• enabled: false
• optInto: ["pythonTestAdapter"]

Installed Extensions

Extension Name	Extension Id	Version
Auto Add Brackets in String Interpolation	aliariff.auto-add-brackets	0.12.2
autopep8	ms-python.autopep8	2024.0.0
AWS Toolkit	amazonwebservices.aws-toolkit-vscode	3.40.0
Better Jinja	samuelcolvin.jinjahtml	0.20.0
Binary Plist	dnicolson.binary-plist	0.11.4
Character Count	stevensona.character-count	0.1.1
chmod	dlech.chmod	1.1.1
Code Runner	formulahendry.code-runner	0.12.2
CodeSnap	adpyke.codesnap	1.3.4
Color Vision	wilsonsio.color-vision	0.1.0
Coverage Gutters	ryanluker.vscode-coverage-gutters	2.12.0
Dash	deerawan.vscode-dash	2.4.0
DeepSource Autofix™ AI	DeepSourceCorp.deepsource-vscode	1.6.19
Docker	ms-azuretools.vscode-docker	1.29.3
Easy Snippet	inu1255.easy-snippet	0.7.5
Edit CSV	janisdd.vscode-edit-csv	0.11.1
ESLint	dbaeumer.vscode-eslint	3.0.10
Even Better TOML	tamasfe.even-better-toml	0.21.2
File Utils	sleistner.vscode-fileutils	3.10.3
Flake8	ms-python.flake8	2023.10.0
GitHub Copilot	GitHub.copilot	1.254.0
GitHub Copilot Chat	GitHub.copilot-chat	0.23.2
GitLens — Git supercharged	eamodio.gitlens	16.1.1
HashiCorp Terraform	hashicorp.terraform	2.34.2
Increment Selection	albymor.increment-selection	0.2.0
IntelliCode	VisualStudioExptTeam.vscodeintellicode	1.3.2
IntelliCode API Usage Examples	VisualStudioExptTeam.intellicode-api-usage-examples	0.2.9
JavaScript Debugger	ms-vscode.js-debug	1.96.0
JavaScript Debugger Companion Extension	ms-vscode.js-debug-companion	1.1.3
JSON formatter	ClemensPeters.format-json	1.0.3
Jupyter	ms-toolsai.jupyter	2024.11.0
Jupyter Cell Tags	ms-toolsai.vscode-jupyter-cell-tags	0.1.9
Jupyter Keymap	ms-toolsai.jupyter-keymap	1.1.2
Jupyter Notebook Renderers	ms-toolsai.jupyter-renderers	1.0.21
Jupyter Slide Show	ms-toolsai.vscode-jupyter-slideshow	0.1.6
Live Preview	ms-vscode.live-server	0.4.15
Live Share	ms-vsliveshare.vsliveshare	1.0.5941
Markdown Editor	zaaack.markdown-editor	0.1.12
Material Icon Theme	PKief.material-icon-theme	5.16.0
MDX	unifiedjs.vscode-mdx	1.8.12
MongoDB for VS Code	mongodb.mongodb-vscode	1.11.0
New Moon Syntax Theme	taniarascia.new-moon-vscode	1.8.8
Notes	dionmunk.vscode-notes	1.2.1
Open in SourceTree	morrislaptop.vscode-open-in-sourcetree	0.6.0
Prettier - Code formatter	esbenp.prettier-vscode	11.0.0
Prettify JSON	mohsen1.prettify-json	0.0.3
Project Templates	cantonios.project-templates	1.2.0
Pylance	ms-python.vscode-pylance	2024.12.1
Python	ms-python.python	2024.22.1
Python Debugger	ms-python.debugpy	2024.14.0
Selected Character Count	mousetraps.selected-character-count	0.0.1
shell-format	foxundermoon.shell-format	7.2.5
Table Visualizer for JavaScript Profiles	ms-vscode.vscode-js-profile-table	1.0.10
Toggle Quotes	BriteSnow.vscode-toggle-quotes	0.3.6
TypeScript Toolbox	DSKWRK.vscode-generate-getter-setter	0.5.0
VSCode Aider	Apertia.vscode-aider	1.0.5
undefined	oderwat.indent-rainbow	8.3.1
YAML	redhat.vscode-yaml	1.15.0
YAML Sort	PascalReitermann93.vscode-yaml-sort	6.6.0

System Info

Item	Value
CPUs	Apple M3 Pro (11 x 2400)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	2, 2, 2
Memory (System)	18.00GB (0.05GB free)
Process Argv	.
Screen Reader	no
VM	0%

[kassi]

@karthiknadig I downgraded to 2024.22.0 and then to 2024.20.0 but my problem still exists with any version. I don't think it's related to the issue you linked.
I don't see a buffer overflow either.

I did some digging and debugging into the extension code and compared it with my output:

    if kind == "function":
        if testfunc and fullname != testfunc + parameterized:
            raise should_never_reach_here(

and

extra info:
fullname: it_raises_a_value_error
testfunc: describe_convert_command.describe_init.with_format_go_licenses.with_invalid_file_format.it_raises_a_value_error
parameterized:

traceback:

fullname is fetched via _get_location from item and item.location contains only it_raises_a_value_error as third element. So to me it looks as if pytest discovery in this case doesn't deliver the required fullname, but some short name only.

Thus I believe it rather has something to do with pytest-describe and the extension not being able to determine them correctly.
WDYT? And would you mind reopening again?
Thanks

[WellingtonNico]

@kassi

after downgraded vscode-python extension, I also needed to clone my project to a new folder to get it working again, don't know why, I even upgraded the version again to check if it could be solved only doing this and I needed to clone into a new folder again(also downgrade again), give it a try.

[eleanorjboyd]

Hi! It looks like you still aren't on the experiment. In your logs it mentions File "/u/ks/.vscode/extensions/ms-python.python-2024.22.1-darwin-arm64/python_files/testing_tools/run_adapter.py", line 18, in <module> and that file is part of our old design. If you move "python.experiments.optInto": ["pythonTestAdapter"], into your user settings file then that should fix this issue. Let me know if not- thanks!

[kassi]

@eleanorjboyd I already have this setting in my global settings, and I also added it to the .vscode/settings.json inside the project. As I mentioned earlier

However, despite setting "Trace" in VSCode Output "Python", there's no "Experiment" in the output.

[eleanorjboyd]

Do you have the setting: "telemetry.telemetryLevel": "off",

This comment brought up that removing it helped and wondering if this is connected: #24214 (comment).

[kassi]

@eleanorjboyd yes, and I tried removing it incl. other telemetry related configs, but same result.
However while doing that another setting caught my eye, which is "python.experiments.enabled": false which was misaligned in the config (really need a way to auto sort this yaml file). I set it to true, quit and reopened, and got another error message, saying that pytest is somehow out of sync and I need to reload the window.
I figured out I need to set it up again via "Python: Configure tests", do a "DevelopeR: Reload window" and finally I see the tests in the sidebar.
This also works after switching back to the old telemetry off setting (and quitting and reopening vscode).

The only thing I realize is that in my pretty new project, where I have 2 test files, it takes some seconds to show the tests. So I did the same in another repo with some more tests (12 test files with a total of 89 tests). It shows all <Function it_...> tests in the Output in an info log, but doesn't show anything in the sidebar - it's actually still processing after minutes and doesn't come back. After updating to the latest version from Python extension again this also works.

Thanks for your assistance.