Test Discovery hangs

[PaleNeutron]

Type: Bug

Behaviour

Testing panel is always empty and log shows

2025-02-05 14:02:42.284 [debug] Testing: Refreshing all test data
2025-02-05 14:02:42.287 [info] Discover tests for workspace name: sqlmodel - uri: /home/john/contribute/sqlmodel
2025-02-05 14:02:42.293 [debug] Starting Test Discovery named pipe

Steps to reproduce:

git clone https://github.com/dexplo/dataframe_image
cd dataframe_image
python -m venv .venv
source .venv/bin/activate
pip install pytest pytest-asyncio
pip install -e .
code .

Then open testing panel

Diagnostic data

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

2025-02-07 09:12:30.822 [info] Experiment 'pythonRecommendTensorboardExt' is active
2025-02-07 09:12:30.822 [info] Experiment 'pythonTerminalEnvVarActivation' is active
2025-02-07 09:12:30.822 [info] Experiment 'pythonTestAdapter' is active
2025-02-07 09:12:30.822 [info] Native locator: Refresh started
2025-02-07 09:12:30.822 [info] Native locator: Refresh started
2025-02-07 09:12:30.822 [info] Native locator: Refresh started
2025-02-07 09:12:31.924 [info] Pyenv environment manager found at: /home/john/.pyenv/bin/pyenv
2025-02-07 09:12:32.158 [info] Poetry environment manager found at: /home/john/.local/pipx/venvs/poetry/bin/poetry
2025-02-07 09:12:32.388 [info] Native locator: Refresh finished in 8887 ms
2025-02-07 09:12:32.391 [info] > D:\Program Files\Python312\python.exe -c "import sys;print(sys.executable)"
2025-02-07 09:12:32.393 [info] > ~/.pyenv/bin/pyenv which python
2025-02-07 09:12:32.393 [info] cwd: .
2025-02-07 09:12:32.470 [error] Error: Command failed: D:\Program Files\Python312\python.exe -c "import sys;print(sys.executable)"
/bin/sh: 1: D:Program: not found

    at genericNodeError (node:internal/errors:984:15)
    at wrappedFn (node:internal/errors:538:14)
    at ChildProcess.exithandler (node:child_process:422:12)
    at ChildProcess.emit (node:events:530:35)
    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 Pipe.<anonymous> (node:net:343:12) {
  code: 127,
  killed: false,
  signal: null,
  cmd: 'D:\\Program Files\\Python312\\python.exe -c "import sys;print(sys.executable)"'
}
2025-02-07 09:12:35.355 [info] Starting Pylance language server.
2025-02-07 09:12:57.726 [info] > conda info --json
2025-02-07 09:12:57.850 [info] Native locator: Refresh started
2025-02-07 09:12:57.866 [info] Pyenv environment manager found at: /home/john/.pyenv/bin/pyenv
2025-02-07 09:12:57.867 [info] Poetry environment manager found at: /home/john/.local/pipx/venvs/poetry/bin/poetry
2025-02-07 09:13:00.037 [info] Native locator: Refresh finished in 2185 ms
2025-02-07 09:13:01.569 [info] Discover tests for workspace name: dataframe_image - uri: /home/john/projects/misc/dataframe_image
2025-02-07 09:13:01.569 [info] Python interpreter path: ./.venv/bin/python
2025-02-07 09:13:01.693 [info] > . ./.venv/bin/activate && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode-server/extensions/ms-python.python-2025.1.2025020602-linux-x64/python_files/printEnvVariables.py
2025-02-07 09:13:01.693 [info] shell: zsh
2025-02-07 09:13:01.799 [info] > ~/.pyenv/versions/3.8.19/bin/python ~/.vscode-server/extensions/ms-python.python-2025.1.2025020602-linux-x64/python_files/printEnvVariables.py
2025-02-07 09:13:01.800 [info] shell: zsh
2025-02-07 09:13:04.332 [info] Prepending environment variable PATH in collection with /home/john/.vscode-server/extensions/ms-python.python-2025.1.2025020602-linux-x64/python_files/deactivate/zsh:/home/john/projects/misc/dataframe_image/.venv/bin: {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2025-02-07 09:13:04.332 [info] Setting environment variable VIRTUAL_ENV in collection to /home/john/projects/misc/dataframe_image/.venv {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2025-02-07 09:13:04.332 [info] Prepending environment variable PS1 in collection with (.venv)  {"applyAtShellIntegration":true,"applyAtProcessCreation":false}
2025-02-07 09:13:04.332 [info] Setting environment variable VIRTUAL_ENV_PROMPT in collection to (.venv)  {"applyAtShellIntegration":true,"applyAtProcessCreation":true}
2025-02-07 09:13:04.333 [info] Send text to terminal: /usr/bin/python3.8 /home/john/.vscode-server/extensions/ms-python.python-2025.1.2025020602-linux-x64/python_files/printEnvVariablesToFile.py /home/john/.vscode-server/extensions/ms-python.python-2025.1.2025020602-linux-x64/python_files/deactivate/zsh/envVars.txt
2025-02-07 09:14:49.103 [info] Discover tests for workspace name: undefined - uri: c:/Users/049171/AppData/Roaming/Code/User/settings.json
2025-02-07 09:14:49.103 [error] Unable to find workspace for given file
2025-02-07 09:15:02.436 [info] Discover tests for workspace name: dataframe_image - uri: /home/john/projects/misc/dataframe_image
2025-02-07 09:15:02.436 [error] Test discovery already in progress, not starting a new one.

Extension version: 2025.0.0
VS Code version: Code 1.96.4 (cd4ee3b1c348a13bafd8f9ad8060705f6d4b9cba, 2025-01-16T00:16:19.038Z)
OS version: Windows_NT x64 10.0.19043
Modes:
Remote OS version: Linux x64 5.15.153.1-microsoft-standard-WSL2
Remote OS version: Linux x64 5.15.153.1-microsoft-standard-WSL2
Remote OS version: Linux x64 5.15.153.1-microsoft-standard-WSL2

• Python version (& distribution if applicable, e.g. Anaconda): 3.12.3
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
• Value of the python.languageServer setting: Pylance

User Settings

languageServer: "Pylance"

testing
• pytestArgs: "<placeholder>"
• pytestEnabled: true

Installed Extensions

Extension Name	Extension Id	Version
cmake	twx	0.0.17
cmake-tools	ms-	1.19.52
color-highlight	nau	2.8.0
copilot	Git	1.265.0
copilot-chat	Git	0.23.2
copy-json-path	Mal	1.4.0
cpptools	ms-	1.23.5
csharp	ms-	2.63.32
datawrangler	ms-	1.18.0
debugpy	ms-	2025.0.0
docs-yaml	doc	1.0.5
even-better-toml	tam	0.21.2
gc-excelviewer	Gra	4.2.62
gitignore	cod	0.9.0
gitlens	eam	16.2.2
go	gol	0.44.0
hexeditor	ms-	1.11.1
intellicode-api-usage-examples	Vis	0.2.9
java	red	1.39.0
js-debug	ms-	1.96.0
jupyter	ms-	2024.11.0
jupyter-renderers	ms-	1.1.0
latex-workshop	Jam	10.7.5
linter-gfortran	for	3.2.0
markdown-all-in-one	yzh	3.6.2
mdmath	goe	2.7.4
myst-highlight	Exe	0.11.0
native-ascii-converter	cwa	1.0.9
plantuml	jeb	2.18.1
prettier-vscode	esb	11.0.0
psi-header	psi	1.25.0
python	ms-	2025.1.2025020602
rainbow-csv	mec	3.16.0
react-component-generator	And	1.1.1
rest-client	hum	0.25.1
ruff	cha	2025.6.0
shell-format	fox	7.2.5
simple-react-snippets	bur	1.2.8
volar	Vue	2.2.0
vscode-django	bat	1.15.0
vscode-docker	ms-	1.29.4
vscode-dotnet-runtime	ms-	2.2.6
vscode-eslint	dba	3.0.10
vscode-fileheader	mik	0.0.2
vscode-gradle	vsc	3.16.4
vscode-graphql	Gra	0.13.0
vscode-java-debug	vsc	0.58.1
vscode-java-dependency	vsc	0.24.1
vscode-java-pack	vsc	0.29.0
vscode-js-profile-table	ms-	1.0.10
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
vscode-kubernetes-tools	ms-	1.3.20
vscode-markdownlint	Dav	0.58.2
vscode-maven	vsc	0.44.0
vscode-pull-request-github	Git	0.102.0
vscode-pylance	ms-	2025.2.1
vscode-sql-beautify	cla	0.3.23
vscode-sql-formatter	adp	1.4.4
vscode-xml	red	0.27.2
vscode-yaml	red	1.15.0
vscodeintellicode	Vis	1.3.2
xml	Dot	2.5.1

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-11700 @ 2.50GHz (16 x 2496)
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 vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.69GB (6.24GB free)
Process Argv	--folder-uri=vscode-remote://wsl+Ubuntu/home/john/projects/cell-strategy-backend --remote=wsl+Ubuntu --crash-reporter-id e0824f99-80f6-4908-9ff9-e2859bce8a44
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.15.153.1-microsoft-standard-WSL2
CPUs	11th Gen Intel(R) Core(TM) i7-11700 @ 2.50GHz (16 x 0)
Memory (System)	11.68GB (3.87GB free)
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.15.153.1-microsoft-standard-WSL2
CPUs	11th Gen Intel(R) Core(TM) i7-11700 @ 2.50GHz (16 x 0)
Memory (System)	11.68GB (3.87GB free)
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.15.153.1-microsoft-standard-WSL2
CPUs	11th Gen Intel(R) Core(TM) i7-11700 @ 2.50GHz (16 x 0)
Memory (System)	11.68GB (3.87GB free)
VM	0%

A/B Experiments

vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805:30301674
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:31024239
c4g48928:30535728
azure-dev_surveyone:30548225
a9j8j154:30646983
962ge761:30959799
pythonmypyd1:30879173
h48ei257:31000450
pythontbext0:30879054
cppperfnew:31000557
dwnewjupyter:31046869
nativerepl2:31139839
pythonrstrctxt:31112756
nativeloc1:31192215
iacca1:31171482
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530
6074i472:31201624
dwoutputscf:31232845
9064b325:31222308
copilot_t_ci:31222730

[eleanorjboyd]

thanks for the repro steps will take a look

[qodfathr]

Seeing the same

2025-02-08 19:03:23.969 [info] ============================= test session starts ==============================
platform linux -- Python 3.11.10, pytest-8.3.4, pluggy-1.5.0
rootdir: /home/myname/repos/myrepo
configfile: pyproject.toml
plugins: jaxtyping-0.2.37, cov-6.0.0, typeguard-4.4.1, anyio-4.2.0, hydra-core-1.3.2, mock-3.14.0

(Hung at this point.)

If I copy the pytest --collect-only command being executed and run it in my shell, it does not hang and completes successfully.

[CagriYonca]

I was facing the same issue, I executed pytest --collect-only and the result was also identical. Stash your changes and try again. I guess some broken code causes Pytest to get into the infinite loop.

[PaleNeutron]

I was facing the same issue, I executed pytest --collect-only and the result was also identical. Stash your changes and try again. I guess some broken code causes Pytest to get into the infinite loop.

No, I clone exactly same repo to WSL and Windows, without not modifying any code, workspace in WSL hangs but in Windows works.