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pytest discovery never ends #24632

@Imanuel-Miz

Description

@Imanuel-Miz

Type: Bug

Behaviour

When I click on the the "test explorer" UI icon, in order to trigger discovery of python tests in my projects (I am using a multi-root workspace), it shows like it starting, but never ends.
No clear errors in the python / extension host logs.
Tried setting the logs for trace / debug, but did not find any error, or anything useful.

Image

If I set:
"python.experiments.optOutFrom": ["pythonTestAdapter"]

The test discovery works, but the discovery fails over other issues, which normally never failed for me.

If I do not click on the "test explorer" icon, but simple save a python test file, the discovery for the project works, as I can see the green arrow for run / debug tests for the tests files in the project.

It started a few days ago, so I suspect this is related to one of the latest updated of the python extension.

Steps to reproduce:

  1. Click on the "test explorer" UI icon.
  2. pytest discovery never ends

Diagnostic data

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

XXX

Extension version: 2024.22.0
VS Code version: Code 1.96.0 (138f619c86f1199955d53b4166bef66ef252935c, 2024-12-11T02:29:09.626Z)
OS version: Darwin arm64 24.2.0
Modes:

  • Python version (& distribution if applicable, e.g. Anaconda): 3.10.11
  • Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
  • Value of the python.languageServer setting: Pylance
User Settings

Multiroot scenario, following user settings may not apply:

envFile: "<placeholder>"

languageServer: "Pylance"

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

Installed Extensions
Extension Name Extension Id Version
autopep8 ms-python.autopep8 2024.0.0
Code Spell Checker streetsidesoftware.code-spell-checker 4.0.21
Codeium: AI Coding Autocomplete and Chat for Python, Javascript, Typescript, Java, Go, and more Codeium.codeium 1.30.2
Copy File Name ouweiya.copy-file-name 3.0.9
custom-button OhYee.custom-button 1.0.0
Django batisteo.vscode-django 1.15.0
Draw.io Integration hediet.vscode-drawio 1.6.6
ESLint dbaeumer.vscode-eslint 3.0.10
Flow / Jira Commit Prefix emilianox.flow-jira-commit-prefix 0.0.9
Git Blame waderyan.gitblame 11.1.1
Git History donjayamanne.githistory 0.6.20
GitHub Actions github.vscode-github-actions 0.27.0
GitHub Pull Requests GitHub.vscode-pull-request-github 0.102.0
GitLens — Git supercharged eamodio.gitlens 16.0.5
HashiCorp Terraform hashicorp.terraform 2.34.1
IntelliCode VisualStudioExptTeam.vscodeintellicode 1.3.2
IntelliCode API Usage Examples VisualStudioExptTeam.intellicode-api-usage-examples 0.2.9
isort ms-python.isort 2023.10.1
JavaScript and TypeScript Nightly ms-vscode.vscode-typescript-next 5.8.20241216
JavaScript Debugger ms-vscode.js-debug 1.96.0
JavaScript Debugger Companion Extension ms-vscode.js-debug-companion 1.1.3
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
Markdown All in One yzhang.markdown-all-in-one 3.6.2
Open full realpath ima-miz-vscode.open-full-realpath 0.1.1
Open In Default Browser peakchen90.open-html-in-browser 2.1.10
Path Intellisense christian-kohler.path-intellisense 2.10.0
Peacock johnpapa.vscode-peacock 4.2.2
Postman Postman.postman-for-vscode 1.5.1
Prettier SQL VSCode inferrinizzard.prettier-sql-vscode 1.6.0
Pylance ms-python.vscode-pylance 2024.12.1
Pytest IntelliSense Cameron.vscode-pytest 0.1.1
Python ms-python.python 2024.22.0
Python Debugger ms-python.debugpy 2024.14.0
Python Extension Pack donjayamanne.python-extension-pack 1.7.0
Python Indent KevinRose.vsc-python-indent 1.18.0
Spell Right ban.spellright 3.0.140
Table Visualizer for JavaScript Profiles ms-vscode.vscode-js-profile-table 1.0.10
Terraform Advanced Syntax Highlighting pjmiravalle.terraform-advanced-syntax-highlighting 1.4.3
Terraform Completer mgtrrz.terraform-completer 0.2.0
Test Adapter Converter ms-vscode.test-adapter-converter 0.2.1
Test Explorer UI hbenl.vscode-test-explorer 2.22.1
undefined oderwat.indent-rainbow 8.3.1
vscode-icons vscode-icons-team.vscode-icons 12.10.0
YAML redhat.vscode-yaml 1.15.0
System Info
Item Value
CPUs Apple M1 Pro (8 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) 3, 4, 5
Memory (System) 32.00GB (0.28GB free)
Process Argv --crash-reporter-id cf2645eb-101b-464d-b242-c8081c97eeb2
Screen Reader no
VM 0%
A/B Experiments
vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492:30256859
pythonvspyt551cf:31179979
vscod805:30301674
binariesv615:30325510
vsaa593:30376534
py29gd2263:31024239
c4g48928:30535728
azure-dev_surveyone:30548225
962ge761:30959799
pythonnoceb:30805159
pythonmypyd1:30879173
2e7ec940:31000449
pythontbext0:30879054
cppperfnew:31000557
dsvsc020:30976470
pythonait:31006305
dsvsc021:30996838
dvdeprecation:31068756
dwnewjupyter:31046869
nativerepl1:31139838
pythonrstrctxt:31112756
nativeloc2:31192216
cf971741:31144450
iacca1:31171482
notype1cf:31157160
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530
6074i472:31201624

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