* fix(#4949): cap unmeasured files per Windows conformance chunk
The windows conformance CI lane keeps going red every few updates:
scripts/run-tests.cjs kills a chunk at the 600s per-chunk backstop with
zero failing tests, pure slowness. Both recent incidents (ccfed63355,
af822a8024) killed a chunk holding 5-6 files absent from
tests/test-timings.json, packed alongside the chunk's measured files —
each unmeasured file's guessed weight looked affordable alone, but
several guesses compounded into a real overrun no single file's weight
predicted. tests/test-timings.json is manually regenerated and
routinely stale (30.5% of the conformance-tier pool is currently
unmeasured), so this keeps recurring as new conformance-tier files are
added.
Add a third, independent per-chunk budget to packChunks: a cap on how
many unmeasured files any one chunk may hold (win32-only, default 2,
RUN_TESTS_MAX_UNMEASURED_PER_CHUNK-overridable), using the same
"skip this bin, try the next; grow chunk count if none has room"
mechanism already proven safe for the existing char budget. This
bounds the compounding directly and protects every future batch of
newly-added, not-yet-measured conformance-tier files without depending
on anyone remembering to regenerate the timings table.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
* chore(#4949): add changeset for windows conformance chunk cap fix
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
* fix(#4949): address standards-review findings — changeset format, cap-1 boundary test
Reformat the changeset body to the documented **bold** — explanation.
format (was missing the em-dash separator and had a period inside the
bold clause) and add the trailing (#4949) backlink. Add the missing
cap-1 boundary test case alongside the existing cap/cap+1 rows.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
* chore(#4949): backfill changeset PR number (#4950)
* fix(#4949): don't apply the unmeasured-cap when no timings table loads at all
Caught live: PR #4950's own conformance test (windows-latest, 24,
shard 1/3) failed a pre-existing pinned test. makeMeasuredPredicate(null)
returns false for every file when the timings table is completely
missing/corrupt -- a different fact than "a loaded table exists but
doesn't cover this file". main() derived MAX_UNMEASURED_PER_CHUNK
unconditionally, so with no table at all every file counted as
"unmeasured" and the win32 cap of 2 split 7 files into 4 chunks instead
of the 3 the file-count-chunking contract (and a pinned test) require.
Gate the cap on loadedTimings() itself: no table -> Infinity (no cap,
matching the long-standing uniform-weight-1 no-table contract).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
---------
Co-authored-by: sim <sim@local>
Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
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