Test runner fails but terminal run does not

[puttehi]

When using the VSCode test explorer with pytest in a Poetry environment. The tests fail:

Current working directory: /home/puttehi/dev/repos/lounaat-info
Workspace directory: /home/puttehi/dev/repos/lounaat-info
Running test with arguments: --rootdir /home/puttehi/dev/repos/lounaat-info --override-ini junit_family=xunit1 --junit-xml=/tmp/tmp-144532UbaQCCn4ags5.xml ./py/tests/test_lounaat_info.py::test_env_discord_webhook

# ...

./py/tests/test_lounaat_info.py::test_env_discord_webhook Failed: [undefined]KeyError: 'DISCORD_WEBHOOK'
def test_env_discord_webhook():
>       discord = subject.ENV["DISCORD_WEBHOOK"]
E       KeyError: 'DISCORD_WEBHOOK'

But when running it from the terminal, it works:

$ poetry run pytest .
=========================================================================================== test session starts ============================================================================================
platform linux -- Python 3.10.4, pytest-7.1.2, pluggy-0.13.1
rootdir: /home/puttehi/dev/repos/lounaat-info/py
collected 3 items                                                                                                                                                                                          

tests/test_lounaat_info.py ...                                                                                                                                                                       [100%]

============================================================================================ 3 passed in 0.01s =============================================================================================

I tried setting python.envFile = "" but that had no effect.

[brettcannon]

Where is DISCORD_WEBHOOK specified? Is it somehow tied to poetry run?