[Python] Pytest + async playwright: tests execution hangs forever after first test passes

I'm using async_playwright in Python. When I want to add unit tests, I need to create a shared browser and page for each test case. I'm using pytest_asyncio to create fixtures for that.

This is my conftest.py file:

import pytest_asyncio
import asyncio
from playwright.async_api import async_playwright

from src.page_object.factory.playwright import PWPageOjectFactory


@pytest_asyncio.fixture(scope="session")
def event_loop(request):
"""Create an instance of the default event loop for each test case."""
loop = asyncio.get_event_loop_policy().new_event_loop()
yield loop
loop.close()


@pytest_asyncio.fixture(scope="module")
async def browser():
async with async_playwright() as p:
browser = await p.chromium.launch()
yield browser
await browser.close()


@pytest_asyncio.fixture(scope="module")
async def page(browser):
factory = PWPageOjectFactory("https://www.google.com", browser)
print(factory.url)
page = await factory.create_page_object()
print(page)
return page


And this is my test file:

import pytest

from src.page_object.element.playwright import PWElement
from src.page_object.page.playwright import PWPageObject

pytest_plugins = ("pytest_asyncio",)


@pytest.mark.asyncio
async def test_po_factory(page):
assert page is not None
assert isinstance(page, PWPageObject)


@pytest.mark.asyncio
async def test_get_active_element(page):
element = await page.get_active_element()
assert element is not None
assert isinstance(element, PWElement)


@pytest.mark.asyncio
async def test_navigate(page):
element = await page.get_active_element()
await page.navigate_forward()
new_element = await page.get_active_element()
assert element.get_attribute("id") != new_element.get_attribute("id")
await page.navigate_backward()
new_element = await page.get_active_element()
assert element.get_attribute("id") == new_element.get_attribute("id")


When I execute pytest tests (where tests is the folder that contains the previous files), the first test case passes and then the execution gets stuck forever.

What am I missing here?

Things I have tried:

• I had the module scoped fixtures in the test file before and the behavior was the same. I understand that it doesn't change anything.
• I removed the event_loop fixture from the conftest.py file and got the same result.
• I have been looking for ways to run all my tests without using the Playwright plugin for pytest since I think there should be a way to run my tests without it.
• I found a similar question here, but it has no answer so I'm asking about my specific case that also involves playwright.

Update (2024-04-25)


This is the output of pytest -vvv -s:

(example) C:\Users\MyUser\Desktop\projects\example>pytest -vvv -s
================================================= test session starts =================================================
platform win32 -- Python 3.12.2, pytest-8.1.1, pluggy-1.4.0 -- C:\Users\MyUser\miniconda3\envs\example\python.exe
cachedir: .pytest_cache
rootdir: C:\Users\MyUser\Desktop\projects\example
plugins: asyncio-0.23.6
asyncio: mode=Mode.STRICT
collected 5 items

tests/test_pageobject.py::test_po_factory https://www.google.com
<src.page_object.page.playwright.PWPageObject object at 0x0000018A4EA38FB0>
PASSED
tests/test_pageobject.py::test_get_active_element


The process stays stuck forever

Maybe other details I didn't mention:

• I'm developing inside a conda environment
• I'm using a Windows machine

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