ci: silence benign Windows asyncio cleanup warning in pytest#48
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ChenglongWang wants to merge 1 commit into
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ci: silence benign Windows asyncio cleanup warning in pytest#48ChenglongWang wants to merge 1 commit into
ChenglongWang wants to merge 1 commit into
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CPython's ProactorEventLoop on Windows finalizes subprocess transports after
the event loop has closed, which raises RuntimeError("Event loop is closed")
inside BaseSubprocessTransport.__del__. Pytest's unraisablehook converts that
into a PytestUnraisableExceptionWarning, and GitHub Actions then misannotates
the warning text as an Error in the CI summary even though every test passes.
Add a scoped filterwarnings rule under [tool.pytest.ini_options] to ignore
exactly that warning class+message. Other unraisable exceptions still surface.
Made-with: Cursor
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Summary
CI on Windows surfaces a benign
RuntimeError: Event loop is closedfrom CPython'sProactorEventLoopfinalizing subprocess transports after the loop has closed. Pytest's unraisablehook turns it into aPytestUnraisableExceptionWarning, and GitHub Actions then misannotates the warning text (which contains the substringError:) as a red error in the run summary — even though every test passes (conclusion: success).This adds a single, narrowly-scoped
filterwarningsentry under[tool.pytest.ini_options]that ignores only that exact warning class + message. Any other unraisable exception (real bugs) still surfaces normally.Verified locally: pre-filter the full suite reports
52 warnings, post-filter51 warnings(the unraisable one is gone, noBaseSubprocessTransport/Event loop is closedlines appear in the warnings summary).Test plan
pytest tests --no-cov: 1709 passed, 1 skipped (locally on macOS)