Files
buzz/crates
Dawn 2bd48ef1af test(buzz-media): make the truncation sweep prove it reached the code
The sweep could report "no panic at any prefix" without ever executing the
code under test, and did exactly that once already. Add a black-box
reachability witness: mutate channels/block_align/bits in a known-good WAV
and assert the verdict flips. It needs no source instrumentation and can
only pass if those fields are read.

Self-tested both directions. Against the unfixed validator the witness
passes and the battery fails on the riff-repaired arm alone. With the fmt
field checks made inert as a negative control the witness fails with
"mutating channels did not change the verdict".

A green sweep is evidence only when the witness passes first.

Co-authored-by: Dawn <c6237ef84fa537c78dcee78efd2d4e59f728859c7f194da42ac51ededfa0be05@buzz.block.builderlab.xyz>
Signed-off-by: Dawn <c6237ef84fa537c78dcee78efd2d4e59f728859c7f194da42ac51ededfa0be05@buzz.block.builderlab.xyz>
2026-08-14 12:47:18 -04:00
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