Files
gbrain/test
ea9908d6d6 fix(test): isolate GBRAIN_HOME in hybrid-reranker integration test (#1527) (#2640)
The four `hybridSearch — reranker enabled (reorder)` cases stub the gateway
at 1536 dims (DIMS). Since v0.36.3.0 hybridSearch resolves the embedding
column via loadConfig(), whose precedence is
cfg.embedding_dimensions > gateway dims > default. On any machine whose
~/.gbrain/config.json sets embedding_dimensions to something other than 1536
(e.g. text-embedding-3-small at 1280), the real config outranks the stub: the
1536-d stub vector fails the gateway dim check, the error is swallowed, search
falls back to keyword-only, and the reranker never runs (rerankerFn gets 0
docs, rerank_score undefined). Green in CI only because a fresh runner has no
config file — deterministic red on a contributor's machine.

Fix (test-only): isolate GBRAIN_HOME to an empty tmpdir in beforeAll so
loadConfig() returns null and the stub's dims win, then restore it and clean
up in afterAll. Same idiom as emptyHome() in
test/ai/gateway-probe-chat-model.test.ts.

Verified with a planted ~/.gbrain/config.json at 1280 dims: 2 pass / 4 fail
before, 6 pass / 0 fail after; still green with no config file. typecheck clean.

Fixes #1527

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-23 15:36:26 -07:00
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