adds test to assist

Author: pcrespov

services/web/server/requirements/_test.in

@@ -22,9 +22,11 @@ jsonschema
 openapi-spec-validator
 pytest
 pytest-aiohttp
+# ----
 # Overcomes "Known issues" in https://github.com/pytest-dev/pytest-asyncio/releases/tag/v0.23.8
 # IMPORTANT: This constraint can be removed when `test_pytest_asyncio_known_issue` passes with the new update of pytest-asyncio
 pytest-asyncio<0.23
+# ----
 pytest-benchmark
 pytest-cov
 pytest-docker

services/web/server/tests/integration/test__pytest_asyncio.py

@@ -0,0 +1,48 @@
+# pylint: disable=redefined-outer-name
+# pylint: disable=unused-argument
+# pylint: disable=unused-variable
+
+import asyncio
+
+import pytest
+import pytest_asyncio
+
+pytest_simcore_core_services_selection = [
+    "migration",
+    "postgres",
+]
+pytest_simcore_ops_services_selection = []
+
+
+@pytest.fixture(autouse=True)
+def _drop_and_recreate_postgres(database_from_template_before_each_function: None):
+    return
+
+
+@pytest.fixture
+def some_fixture(
+    event_loop: asyncio.AbstractEventLoop,
+    simcore_services_ready: None,
+):
+    event_loop.run_until_complete(asyncio.sleep(0.1))
+
+
+# NOTE: Remove skip marker to check whether `pytest-asyncio<0.23` constraint in _test.in
+@pytest.mark.skip(reason="Checks pytest-asyncio upgrade issue")
+async def test_pytest_asyncio_known_issue(some_fixture: None):
+    #
+    # This test demonstrates a common failure in most integration tests when using pytest-asyncio version 0.23.
+    # The test was derived by simplifying the original test_garbage_collection.py to highlight the issue.
+    #
+    # Due to an unresolved issue in pytest-asyncio, pytest will fail to execute this async test,
+    # resulting in the following error:
+    #
+    #  `RuntimeError: There is no current event loop in thread 'MainThread'.`
+    #
+    # For more details, refer to the "Known Issues" section in the release notes:
+    # https://github.com/pytest-dev/pytest-asyncio/releases/tag/v0.23.8
+    #
+
+    assert pytest_asyncio.__version__
+
+    # NOTE: it might fail upon db tear-down but it is not relevant for this test