All testcases being skipped after installing pytest-memray

[lb1mg]

I have a lot of testcases that run fine. We are trying to add memray to our CI/CD but when we tried installing it and running the tests with --memray it started skipping all the testcases!

I tried running these with -rsx flag as well, this is the reason it throws for skipping the tests:

async def function and no async plugin installed

Reminder that these test cases otherwise run fine since forever. Is there any other prerequisite for integrating pytest-memray?

Thanks.

[pablogsal]

Can you please provide a reproducer?
There is nothing in the pytest plugin that requires asyncio so maybe what happened is that your pytest version got updated?

[albertvillanova]

Hola @pablogsal,

I am facing the same issue: the async tests are skipped if we pass --memray argument to pytest.

Steps to reproduce the issue:

Use the following test file: test_async.py

import pytest


@pytest.fixture
def anyio_backend():
    return 'asyncio'

@pytest.mark.anyio
async def test_async():
    assert True

Install required dependencies:

python -m pip install pytest anyio pytest-memray

The test runs as expected if --memray is not passed:

 python -m pytest -vv -x test_async.py

Output:

plugins: memray-1.6.0, anyio-4.0.0
collected 1 item                                                                                                                                                                                          

test_async.py::test_async PASSED

However, the test is skipped if we pass --memray:

 python -m pytest --memray -vv -x test_async.py

Output:

plugins: memray-1.6.0, anyio-4.0.0
collected 1 item                                                                                                                                                                                          

test_async.py::test_async SKIPPED (async def function and no async plugin installed (see warnings))                                                                                                 [100%]

============================================================================================ warnings summary =============================================================================================
test_async.py::test_async
  <MY_PROJECT_PATH>/.venv/lib/python3.9/site-packages/_pytest/python.py:151: PytestUnhandledCoroutineWarning: async def functions are not natively supported and have been skipped.
  You need to install a suitable plugin for your async framework, for example:
    - anyio
    - pytest-asyncio
    - pytest-tornasync
    - pytest-trio
    - pytest-twisted
    warnings.warn(PytestUnhandledCoroutineWarning(msg.format(nodeid)))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

[godlygeek]

This definitely seems like a bug, now that we've got a reproduction example. I've opened issue #119 for it.