Redefinig the event_loop_policy fixture will parametrize all async tests. The following example causes all async tests to run multiple times, once for each event loop in the fixture parameters: Replace the default event loop policy in your conftest.py:
import pytest
import uvloop
@pytest.fixture(scope="session")
def event_loop_policy():
return uvloop.EventLoopPolicy()
You may choose to limit the scope of the fixture to package, module, or class, if you only want a subset of your tests to run with uvloop.