Pytest Discovery Error #19333

Mirandatz · 2022-06-20T16:44:41Z

Mirandatz
Jun 20, 2022

VSCode can't find my tests and showed me a message directing me to this page:

> /bin/python ~/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/run_adapter.py discover pytest -- --rootdir . -s --cache-clear gge
cwd: .
[ERROR 2022-5-20 13:40:45.263]: Error discovering pytest tests:
 [n [Error]: ============================= test session starts ==============================
platform linux -- Python 3.10.4, pytest-7.1.2, pluggy-1.0.0
cachedir: /dev/shm/pytest_cache
rootdir: /workspaces/gge, configfile: pyproject.toml
plugins: hypothesis-6.46.11, typeguard-2.13.3, pspec-0.0.4, xdist-2.5.0, forked-1.4.0
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: gge/tests/test_aaa.py::::test_aff
kind: ('function', False)
class: Function
name: test_aff
fspath: /workspaces/gge/gge/tests/test_aaa.py
location: ('gge/tests/test_aaa.py', 0, 'test_aff')
function: <function test_aff at 0x7f768f932050>
markers: []
user_properties: []
attrnames: ['_ALLOW_MARKERS', '__annotations__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__slots__', '__str__', '__subclasshook__', '__weakref__', '_check_item_and_collector_diamond_inheritance', '_fixtureinfo', '_getobj', '_initrequest', '_nodeid', '_obj', '_prunetraceback', '_pyfuncitem', '_pytest_diamond_inheritance_warning_shown', '_report_sections', '_repr_failure_py', '_request', '_store', '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', '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: test_aff
testfunc: .test_aff
parameterized:

traceback:
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/run_adapter.py", line 22, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/__main__.py", line 100, in main
    parents, result = run(toolargs, **subargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 30, in discover
    ec = _pytest_main(pytestargs, [_plugin])
  File "/usr/local/lib/python3.10/site-packages/_pytest/config/__init__.py", line 164, in main
    ret: Union[ExitCode, int] = config.hook.pytest_cmdline_main(
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 315, in pytest_cmdline_main
    return wrap_session(config, _main)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 268, in wrap_session
    session.exitstatus = doit(config, session) or 0
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 321, in _main
    config.hook.pytest_collection(session=session)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 332, in pytest_collection
    session.perform_collect()
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 660, in perform_collect
    hook.pytest_collection_modifyitems(
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 92, in pytest_collection_modifyitems
    test, parents = self.parse_item(item)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 77, in parse_item
    return parse_item(item)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 184, in parse_item
    raise should_never_reach_here(
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 132, in should_never_reach_here
    traceback.print_stack()
collected 1 item

<Package tests>
  <Module test_aaa.py>
    <Function test_aff>
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: gge/tests/test_aaa.py::::test_aff
kind: ('function', False)
class: Function
name: test_aff
fspath: /workspaces/gge/gge/tests/test_aaa.py
location: ('gge/tests/test_aaa.py', 0, 'test_aff')
function: <function test_aff at 0x7f768f932050>
markers: []
user_properties: []
attrnames: ['_ALLOW_MARKERS', '__annotations__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__slots__', '__str__', '__subclasshook__', '__weakref__', '_check_item_and_collector_diamond_inheritance', '_fixtureinfo', '_getobj', '_initrequest', '_nodeid', '_obj', '_prunetraceback', '_pyfuncitem', '_pytest_diamond_inheritance_warning_shown', '_report_sections', '_repr_failure_py', '_request', '_store', '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', '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: test_aff
testfunc: .test_aff
parameterized:

traceback:
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/run_adapter.py", line 22, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/__main__.py", line 100, in main
    parents, result = run(toolargs, **subargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 30, in discover
    ec = _pytest_main(pytestargs, [_plugin])
  File "/usr/local/lib/python3.10/site-packages/_pytest/config/__init__.py", line 164, in main
    ret: Union[ExitCode, int] = config.hook.pytest_cmdline_main(
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 315, in pytest_cmdline_main
    return wrap_session(config, _main)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 268, in wrap_session
    session.exitstatus = doit(config, session) or 0
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 321, in _main
    config.hook.pytest_collection(session=session)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 332, in pytest_collection
    session.perform_collect()
  File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 664, in perform_collect
    hook.pytest_collection_finish(session=self)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
    return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
    res = hook_impl.function(*args)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 107, in pytest_collection_finish
    test, parents = self.parse_item(item)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 77, in parse_item
    return parse_item(item)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 184, in parse_item
    raise should_never_reach_here(
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 132, in should_never_reach_here
    traceback.print_stack()
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 660, in perform_collect
INTERNALERROR>     hook.pytest_collection_modifyitems(
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR>     return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 92, in pytest_collection_modifyitems
INTERNALERROR>     test, parents = self.parse_item(item)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 77, in parse_item
INTERNALERROR>     return parse_item(item)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 184, 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 "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 268, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 321, in _main
INTERNALERROR>     config.hook.pytest_collection(session=session)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR>     return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 332, in pytest_collection
INTERNALERROR>     session.perform_collect()
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/_pytest/main.py", line 664, in perform_collect
INTERNALERROR>     hook.pytest_collection_finish(session=self)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_hooks.py", line 265, in __call__
INTERNALERROR>     return self._hookexec(self.name, self.get_hookimpls(), kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_manager.py", line 80, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 60, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_result.py", line 60, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/usr/local/lib/python3.10/site-packages/pluggy/_callers.py", line 39, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 107, in pytest_collection_finish
INTERNALERROR>     test, parents = self.parse_item(item)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 77, in parse_item
INTERNALERROR>     return parse_item(item)
INTERNALERROR>   File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_pytest_item.py", line 184, in parse_item
INTERNALERROR>     raise should_never_reach_here(
INTERNALERROR> NotImplementedError: Unexpected pytest node (see printed output).

========================== 1 test collected in 0.02s ===========================

Traceback (most recent call last):
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/run_adapter.py", line 22, in <module>
    main(tool, cmd, subargs, toolargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/__main__.py", line 100, in main
    parents, result = run(toolargs, **subargs)
  File "/root/.vscode-server/extensions/ms-python.python-2022.8.0/pythonFiles/testing_tools/adapter/pytest/_discovery.py", line 44, in discover
    raise Exception("pytest discovery failed (exit code {})".format(ec))
Exception: pytest discovery failed (exit code 3)

	at ChildProcess.<anonymous> (/root/.vscode-server/extensions/ms-python.python-2022.8.0/out/client/extension.js:2:232793)
	at Object.onceWrapper (node:events:510:26)
	at ChildProcess.emit (node:events:390:28)
	at maybeClose (node:internal/child_process:1064:16)
	at Socket.<anonymous> (node:internal/child_process:450:11)
	at Socket.emit (node:events:390:28)
	at Pipe.<anonymous> (node:net:687:12)]

I have a single test:

def test_aff() -> None:
    assert 2 == 2

pytest --collect-only works just fine

root@704bfe015b97:/workspaces/gge# pytest --collect-only
========================================== test session starts ===========================================
platform linux -- Python 3.10.4, pytest-7.1.2, pluggy-1.0.0
cachedir: /dev/shm/pytest_cache
rootdir: /workspaces/gge, configfile: pyproject.toml
plugins: hypothesis-6.46.11, typeguard-2.13.3, pspec-0.0.4, xdist-2.5.0, forked-1.4.0
collected 1 item

======================================= 1 test collected in 6.13s ========================================

brettcannon · 2022-06-20T19:21:50Z

brettcannon
Jun 20, 2022
Collaborator

Locking as a duplicate of #19334 .

0 replies

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Mirandatz Jun 20, 2022

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Uh oh!

brettcannon Jun 20, 2022 Collaborator

Mirandatz
Jun 20, 2022

brettcannon
Jun 20, 2022
Collaborator