Discovery lens not working with pytest >= 3.7

[CaselIT]

When discovering test with pytest>=3.7 if the test directory is a package the reported files do not include their path if they are in a subfolder.

With a file structure like

- tests
|- __init__.py
|- bar_test.py
|- subfolder
   |- foo_test.py

The reported output of pytest is

<Package 'C:\\path\\to\\pytest-discovery-bug\\tests_package'>
  <Module 'bar_test.py'>
    ...
  <Module 'foo_test.py'>
    ...

There is no indication that foo_test.py is inside the folder subfolder, so the extension fails to show the lens on the file subfolder/foo_test.py

I've created a minimal example: https://github.com/CaselIT/pytest-discovery-bug

I've reported the bug also on the pytest repo pytest-dev/pytest#4024, since it seems to be an issue of pytest.

I'm opening this to check if there is a work around to this issue in the meantime

Environment data

• VS Code version: 1.27.2
• Extension version (available under the Extensions sidebar): 2018.8.0
• OS and version: windows 10
• Python version (& distribution if applicable, e.g. Anaconda): 3.6.6

[brettcannon]

Unfortunately there isn't a work-around short of you adding a __init__.py into your subfolder directory so pytest will then surface the appropriate information that we need to be able to reference foo_test.py.

[CaselIT]

thanks. hopefully it will be solved by pytest

[RonnyPfannschmidt]

note that you shouldn't just parse text output of pytest - you should invoke it with a plugin instead that correctly collects the internal details

[brettcannon]

@RonnyPfannschmidt yep, we know. 😄 Plan to address it when we clean-up our testing scenarios.