Python test extension discovery of tests broken

[shane99a]

2024-10-11 16:47:32.732 [warning] could not find a pixi interpreter for the interpreter at /Users/xxx/.pyenv/versions/3.11.10/bin/python
2024-10-11 16:47:32.735 [info] > ~/.pyenv/versions/3.11.10/bin/python ~/.vscode/extensions/ms-python.python-2024.14.1-darwin-arm64/python_files/testing_tools/run_adapter.py discover pytest -- --rootdir . -s --cache-clear test
2024-10-11 16:47:32.735 [info] cwd: .
2024-10-11 16:47:34.370 [error] Error discovering pytest tests:
 [n [Error]: sys:1: DeprecationWarning: builtin type swigvarlink has no __module__ attribute

	at ChildProcess.<anonymous> (/Users/xxx/.vscode/extensions/ms-python.python-2024.14.1-darwin-arm64/out/client/extension.js:2:252414)
	at Object.onceWrapper (node:events:634:26)
	at ChildProcess.emit (node:events:519:28)
	at maybeClose (node:internal/child_process:1105:16)
	at ChildProcess._handle.onexit (node:internal/child_process:305:5)]

What is swigvarlink?

Additional info

experiments
• optOutFrom: ["pythonTestAdapter"]

[karthiknadig]

@shane99a swigvarlink is something in your installation of python that seems. It has nothing to do with python extrension. You might want to re-create the environment you have.

Is there any particular reason why you have set optOutFrom: ["pythonTestAdapter"] .

[shane99a]

I opted out for pythonTestAdapter by following the comments here: #23901 for a separate issue.
But having that on/off wasn't fixing the error.

But I figured out through a lot of debugging, that there was an import to an external library that is triggering the extension issue. I unfortunately cannot change anything regarding the external library there as I'm not sure where to even debug that code.

But here's where I'm a little confused because when I run the extension command in the terminal then it seems to run just fine:

~/.pyenv/versions/3.11.10/bin/python ~/.vscode/extensions/ms-python.python-2024.14.1-darwin-arm64/python_files/testing_tools/run_adapter.py discover pytest -- --rootdir ./test -s --cache-clear

[
    {
        "rootid": ".",
        "root": "/Users/xxx/xxx/xxx",
        "parents": [...],
        "tests": [...]
    }
]
sys:1: DeprecationWarning: builtin type swigvarlink has no __module__ attribute

There is a json payload outputted which I assume is what the extension is using for display. I have hidden some of the json fields due to source code details but you get the idea.

Also I ran python -m pytest and it runs fine.

I don't think the DeprecationWarning is the issue. What I really would like is some useful stack trace errors or debug logs that could help point to the exact issue in the test extension.

I would appreciate some help here @karthiknadig .

[shane99a]

Ok I figured it out. It turns out I had to then clear cache and reload window after opting into: pythonTestAdapter. So i guess I underestimated the implications of that setting.

[eleanorjboyd]

Sorry for the delay! The work around is very interesting- didn't expect that to be the issue! We will me moving off the experiment (and making that the default) so hopefully that will avoid it in the future.

[eleanorjboyd]

going to close this as it seems resolved

[Simon-Bru]

I was facing the same issue. pythonTestAdapter setting did not fix it.

I had to filter the warning out of pytest output, in pytest.ini:

[pytest]
filterwarnings =
    ignore:.*swigvarlink.*:DeprecationWarning