ImportError when running tests using ptw

[sohang3112]

I have a folder structure like this:

root
|- title_api.py
|- tests
    |- test_title_api.py

Content of test_title_api.py is:

from title_api import *

def test_dummy():
    assert False

Running pytest in the root directory successfully runs test_dummy. But when ptw is run in the root directory, it complains of an ImportError as Python can't find title_api module.

pytest-watch should work similarly to pytest here (add the parent directory to sys.path before running tests).

Notes:

• I install latest commit of pytest-watch from its Github url.
• I am running version 7.2.0 of pytest in Python 3.11.
• My OS is Windows 11.

[kirkbroadhurst]

I have experienced this issue myself.

It seems to be resolved by adding an __init__.py file to your tests folder.

I haven't dug in to explore why it occurs. Adding an (empty) __init__.py to your tests folder can have other impacts, mostly around static analysis, but is generally pretty safe / minor.

[sohang3112]

It seems to be resolved by adding an init.py file to your tests folder.

Thanks, this worked.