[gdluck]

Requested by A

Before: since the pytest-asyncio 1.4.1 release, every Tests & Coverage job on every open OWNd PR aborts with exit code 3 before collecting a single test: INTERNALERROR> pytest.PytestDeprecationWarning: The configuration option "asyncio_default_fixture_loop_scope" is unset. The plugin now emits that warning in pytest_configure, and pyproject.toml turns DeprecationWarning into an error. master's last green run (12fef0c, 2026-10-27 18:23) predates the release; its next run would fail the same way.

After: [tool.pytest.ini_options] sets asyncio_default_fixture_loop_scope = "function", the scope the suite has always used (every async fixture is function-scoped), so nothing changes at runtime and the suite runs again.

Evidence

• Reproduced locally with pytest 9.2.0 / pytest-asyncio 1.4.1 on master 12fef0c: python -m pytest tests -q → the same INTERNALERROR at configure; with this one line: 2125 passed in 15.01s. ruff check . clean.
• CI runs showing the abort: fix(heating): set_central_mode requires a central-unit address #137 (40716921928), fix(message): parse '#'-prefixed dimension 14 setpoint values #138 (40715233983), fix(profiles): drop WHO 16 from the F461 and MyHomeServer1 profiles #142 (40715509514), all four Python versions, same traceback (pytest_asyncio/plugin.py, line 300, pytest_configure).

Once this lands, the open PRs turn green on their next rebase (#137, #138, #142 are the ones currently red on this; #139's MyHOME-suite job is red by design, pending_decoder_rx).

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[GreenGrassBlueOcean]

Clean, minimal, and exact root-cause fix — thank you for jumping on this right away.

• Root cause verified: pytest-asyncio >= 1.4.1 emits PytestDeprecationWarning inside pytest_configure when asyncio_default_fixture_loop_scope is unset, which filterwarnings = ["error::DeprecationWarning", ...] turns into an INTERNALERROR (exit code 3) before test collection across Python 3.11–3.14.
• Fix verified: Every async fixture in the OWNd suite is function-scoped, so setting asyncio_default_fixture_loop_scope = "function" in [tool.pytest.ini_options] preserves exact runtime semantics without loosening DeprecationWarning enforcement.
• Checks: All 8 CI checks (Tests & Coverage 3.11–3.14, Static analysis, Build package, Golden corpus & smoke gates, and MyHOME test suite) are green, single clean commit (00573dc3) directly on master.

LGTM — merging so #138, #142, #137, and #139 can rebase cleanly onto green master.