test: ignore anyio's BlockingPortal alias deprecation - #452
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anyio 4.15 turned `anyio.abc.BlockingPortal` into a deprecating lazy alias for `anyio.from_thread.BlockingPortal`. starlette's testclient still names the old spelling at module level, so under `error` all 26 collections that import fastapi.testclient abort. Every `tests` matrix job and the bridge E2E job go red on a tree nobody touched, on every OS and Python version. Matched by message rather than by class, for the same reason as the starlette line above it: the warning's class is anyio-private, not a public symbol to import. Remove when starlette migrates to the `from_thread` spelling. The same one-line fix rides along inside #449; this lifts it out so every open PR and main can go green without waiting on that feature branch.
Vortiago
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Sep 7, 2026
Picks up the anyio BlockingPortal warning filter from #452, which is what this branch's red CI was waiting on.
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anyio 4.15 turned
anyio.abc.BlockingPortalinto a deprecating lazy alias foranyio.from_thread.BlockingPortal. starlette's testclient still names the old spelling at module level, so undererrorall 26 collections that importfastapi.testclientabort — everytestsmatrix job and the bridge E2E job go red on a tree nobody touched, on every OS and Python version.Matched by message rather than by class, for the same reason as the starlette line above it: the warning's class is anyio-private, not a public symbol to import. Remove when starlette migrates to the
from_threadspelling.The same one-line fix rides along inside #449; this lifts it out so every open PR and main can go green without waiting on that feature branch. #449 will want the duplicate line dropped when it rebases.
Refs #449