`unittest` TestCase collection fails silently when there are unclear circular dependencies

Hey! I have problem with collecting unittest/asynctest based test.

I’m trying to run tests TestCase from unittest/asynctest and have problem when I provide for example exact dir pytest directory_name then collecting works fine, it will collect correct test and run it but when I will run pytest without directory pytest it’s collecting same tests but in this case it skipps all of them becasue it has init method defined from testcase.

PytestCollectionWarning: cannot collect test class 'TestCase' because it has a __init__ constructor 

but If I run it directly, by passing pytest test_name.py or pytest dir_name it will run single test or in second case, it will collect correctly test from dir and run it

In every case the same test are collected but in one is skipped and in another it run normally.

also https://docs.pytest.org/en/stable/unittest.html it says that pytest tests should run unittest style test but it will work only if there are in test dir, right?

Is it bug or missing configuration?

• pytest 6.2.2
• asynctest 0.13.0
• python 3.9.1
• osx Big Sur on m1

[RonnyPfannschmidt]

Yes please, if a circular dependency in code somehow breaks collection, there should be a error at least

I wonder why pytest lacks it

[Zac-HD]

Closing because we don’t have the needed information to resolve this, happy to reopen if that changes 😕