how can I run the entire subprocess in a decorated function?

hiya -

sqlalchemy guy here. I'm doing this thing with asyncio and greenlets, and to make it run the test suite with this special "asyncio / greenlet" mode, I am doing this:

from _pytest.main import pytest_runtestloop as _pytest_runtestloop
def pytest_runtestloop(session):
    return my_magic_runner(_pytest_runtestloop, session)

where above, the entire function that runs everything is actually invoked from the greenlet library. this is not just a "before / after" hook, the run of the tests and all the setups have to be invoked as greenlets. hence I cannot use hookwrapper / yield here.

It doesn't actually have to be one big wrapper for the whole thing, however. I can also wrap each test individually and all the setup/teardown methods. I can do part of this by using pytest_pyfunc_call for individual tests (there's another pytest plugin that does this, i forgot what it is called), however this does not cover things like setup, teardown, and fixtures, and for all of those , I'm not able to identify a clear way to universally decorate all of those without explicitly decorating them. being able to just instrument the entire "run all the setups, tests, and teardowns" in one function is a lot easier.

So my question is, the above hook is not called inside of subprocesses when I use pytest-xdist, and I can't really figure out how pytest-xdist / execnet etc actually do what they are doing. is there some way to just hook around the entire "main" function that's invoked each time within each subprocess? I am wrapping the function in a greenlet, so it can't just be "before" and "after" hooks, the function itself has to be invoked from greenlet.

Start with the mentioned _pytest.main.pytest_runtestloop and pytest_pyfunc_call entry points, then trace how pytest-xdist and execnet start test execution in subprocesses. The issue names no target files or tests; done would mean identifying a supported entry point that invokes setup, tests, and teardown through the requested greenlet wrapper, or documenting why this is not possible.