Three of the six recorded failures were the same test bug: an unresolved
/tmp path compared against a resolved /private/tmp one. macOS makes /tmp a
symlink, so a fixture built with tempfile.mkdtemp(dir="/tmp") and a code path
that resolves what it reports disagree about a file both found correctly.
test_code_nav_tools builds its fixture unresolved and compares it against the
reported path. One realpath fixes both of its failures.
test_glob_confined_e2e is the same cause through a longer route: it mixed
os.path.realpath(ws) with an unresolved secret directory, so relpath emitted
"../../../../tmp/<absolute path>" and the assertion that the absolute path was
absent from the output matched it as a substring. Resolving the secret
directory puts both sides in one tree and the relative path stays short.
macOS full suite goes from 6 failures to 3. The remaining three are an ffmpeg
build without a WebP encoder, a socket test that needs a fast connection
refusal, and the rich-text colour test that is still unexplained.
The ledger is updated in the same change so it does not describe failures that
no longer happen.
specs/testing-devops.md lists "no canonical full-suite known-failing/flaky
ledger" as a gap. Without one a first local run is uninterpretable: you cannot
tell a regression from a platform artifact, so you either chase a non-bug or
ignore a real one.
Six failures on macOS against lab@c499c01b, each with its cause and a verdict
rather than a blanket "environmental":
- three compare an unresolved /tmp path against a resolved /private/tmp one.
Those are test bugs and the file says so.
- one asserts ffmpeg exit 0 for a .webp still, which is a build option Homebrew
does not always carry. Needs a skip or a PNG fallback.
- one opens real sockets and needs a fast connection refusal. Environmental.
- one Playwright colour-contrast test had been written off as a flake. It is
not: three consecutive runs failed identically at ~31s. Recorded as
unexplained and possibly a real defect, because calling it noise is what
stopped anyone looking.
Also documents the prerequisites, since most surprise failures are a missing
npm ci rather than anything here, and the CHROMADB_PORT precaution: the client
reaches Chroma over HTTP regardless of the data directory, so a test run can
attach to a store holding real data.
Léo