Add pytest-lazyfixture stubs

[kasium]

This change will add stubs for pytest-lazyfixture. It is particual useful for projects which type their tests and use pytest-lazyfixture.
The included functions and classes are the scope which can be considered documented by the module. Any other function is related to pytest hook implementations and are normally not called by an user.

Please note, that if a user uses 'pytest.lazy_fixture' these stubs will not work. As recommneded in TvoroG/pytest-lazy-fixture#51 the package needs to imported directly.

[kasium]

The tests are failing with

stubtest failed for Pillow
Traceback (most recent call last):
  File "/home/runner/work/typeshed/typeshed/tests/stubtest_third_party.py", line 147, in <module>
    main()
  File "/home/runner/work/typeshed/typeshed/tests/stubtest_third_party.py", line 143, in main
    run_stubtest(dist)
  File "/home/runner/work/typeshed/typeshed/tests/stubtest_third_party.py", line 115, in run_stubtest
    raise StubtestFailed from None
__main__.StubtestFailed
Error: Process completed with exit code 1.

No clue why this affects Pillow

[Akuli]

Please rename stubs/pytest-lazyfixture to stubs/pytest-lazy-fixture. It should match the name used with pip install, and pip install pytest-lazyfixture doesn't work.

[kasium]

done

[Akuli]

• Stubtest error is not related to this PR. See Fix stubtest PIL error #5746
• Some functions are missing, such as sorted_by_dependency. Consider adding a module-level __getattr__ to mark the stub as incomplete.

[Akuli]

I merged our master branch to this branch to fix the PIL error. You will need to git pull before you can push more commits.

[kasium]

New Error:
stubs/pytest-lazyfixture/pytest_lazy_fixture.pyi:9: error: Overloaded function signatures 1 and 2 overlap with incompatible return types

[kasium]

Thanks a lot for all the help and explanations!

[Akuli]

I think the file should be named pytest_lazyfixture.pyi, so that you can import pytest_lazyfixture. The file name is what you import, and the directory name is what you pip install.

[kasium]

That makes sense :-)

[kasium]

@Akuli I have a question: So pytest-lazyfixture injects an attribute into pytest so that pytest.lazy_fixture is accessible. Is it possible to somehow reflect this in the stubs? Please note, that pytest is completely typed and I'm not sure if it's possible to merge type information

[Akuli]

That's not something we can do in typeshed, because we don't have pytest stubs. This would need to be added to pytest's __init__.py:

from typing import TYPE_CHECKING

if TYPE_CHECKING:
    import pytest_lazyfixture as lazyfixture

But then types-pytest-lazy-fixture would have to be installed whenever you type-check pytest code, so that wouldn't be great either. I think it's easiest to just not support it for now.

[kasium]

Thanks a lot!