Py.Test add marker to all tests

Question

I am using python asyncio with pytest-aysncio, which means all my tests look like:

@pytest.mark.asyncio
async def test_my_func():
    result = await my_func()
    assert result == expected

Which works great, but I would prefer to not have to decorate every single function in order to get them to work. Is there a way in pytest to add this marker to every test function?

Answer 1

You could add a pytest_collection_modifyitems hook to your conftest.py:

def pytest_collection_modifyitems(items):
    for item in items:
        item.add_marker('asyncio')

Or to do so filewise, you can set pytestmark = pytest.mark.asyncio globally in that file.