VS Code Support for pytest-mypy

[eleanorjboyd]

Hello!
I am the maintainer of testing for vscode-python and have been investigating: microsoft/vscode-python#23933. I have some questions in regards to how I can support pytest-mypy. This discussion is similar to the one I started on the pytest-ruff repo here: businho/pytest-ruff#32.

I explained a bit in the attached issue but what I think the best fix is would be including an extra "mypy" test node nested under each file node on the test explorer. (one side question I have is if there should be two nodes? The mypyFileItem and the mypyStatusItem?) We run tests based on their test-ids, so this would mean the mypy test would have a test-id that would be passed. Also it would fix the issue where no tests show up, this is just a side effect of the mypy node impacting the discovery process. Looking for a bit of advice as there is a piece of implementation.

What happens is while building the test tree to then display is I cycle through all the session.items see code. I am not seeing the mypy node- is this added after or should I expect it during run? I see if I run python -m pytest --mypy --collect-only from the terminal I do get 3 items:

<Dir 23933-pytest-mypy>
  <MypyFile test_ran.py>
    <MypyFileItem mypy>
    <MypyStatusItem mypy-status>
  <Module test_ran.py>
    <Function test_mypy>

so during collect it does exist but im not sure how I can see / access it from my plugin.

I appreciate any advice on how to support this. I have a few more questions but wanted to get the ball rolling with this initial one. Thanks