Files
OmniRoute/tests/unit
Andrew B. 7c63e99149 fix(rerank): add voyage format adapter for request/response translation (#7809) (#7813)
* fix(rerank): add voyage format adapter for request/response translation (#7809)

Voyage AI is not Cohere-compatible:
- Uses top_k instead of top_n (top_n is rejected with 400)
- Rejects empty-string documents (Cohere tolerates them)
- Returns {data:[{relevance_score,index}]} not {results:[…]}

Add format: 'voyage' to the registry entry and implement both
transformRequestForProvider and transformResponseFromProvider adapters:

Request: map top_n→top_k, filter empty/whitespace-only documents
Response: map data[]→results[], remap filtered indices back to caller's
original document positions, sort by score desc, honor top_n

Follows the existing nvidia/deepinfra adapter pattern.
13 new tests, all existing rerank tests still pass.

* fix(rerank): preserve whitespace-only documents in voyage adapter

Voyage API accepts whitespace-only documents (probed live). Changed
filter from text.trim() to text !== '' so only exact empty strings
are dropped. Updated both request adapter and response index-map
reconstruction, plus tests pinning the behavior.

* fix(rerank): force return_documents:false upstream + isolate voyage-7809 test DB

Voyage echoes documents as plain strings (not Cohere {text}); we never rely
on that echo (document text is always synthesized locally from the caller's
originals), so force return_documents:false on the upstream request to make
that explicit and never trust an echoed document. Folds in the corresponding
delta from the now-closed #7811.

Also isolates tests/unit/rerank-voyage-7809.test.ts's SQLite usage behind a
temp DATA_DIR + core.resetDbInstance() in test.after, since importing
open-sse/handlers/rerank.ts pulls in @/lib/usageDb (migrations run on
import) — the test must never touch the shared/real DB.

Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>

---------

Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>
Co-authored-by: Diego Rodrigues de Sa e Souza <diegosouza.pw@gmail.com>
2026-07-20 10:08:31 -03:00
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