87e5c1c6dd
Adds Fusion as a third combo strategy alongside fallback/round-robin. A fusion combo fans the prompt out to all member models in parallel, then a configurable judge model synthesizes one final answer from the panel. - handleFusionChat in open-sse/services/combo.js: quorum-grace collection caps the straggler penalty, anonymized sources prevent judge brand-bias, degrades to a direct answer on single survivor and 503 on total failure. - chat.js dispatches strategy==="fusion" at both combo entry points. - Combos dashboard: per-combo strategy Select replaces the round-robin toggle, fusion reveals a judge picker, plus a strategy/capacity explainer. - tests/unit/combo-fusion.test.js covers fan-out, judge routing/default, quorum-grace straggler drop, single-survivor and total-failure degradation. Co-authored-by: Cursor <cursoragent@cursor.com>
9Router Embeddings Tests
Unit tests for the /v1/embeddings endpoint implementation.
Setup
Vitest must be installed globally or in /tmp/node_modules (due to npm workspace hoisting from the root Next.js project):
cd /tmp && npm install vitest
Running Tests
cd tests/
NODE_PATH=/tmp/node_modules /tmp/node_modules/.bin/vitest run --reporter=verbose --config ./vitest.config.js
Or using the package script (from the tests/ directory):
npm test
Test Files
| File | What it tests |
|---|---|
unit/embeddingsCore.test.js |
open-sse/handlers/embeddingsCore.js — core logic: body builder, URL router, headers, handler flow |
unit/embeddings.cloud.test.js |
cloud/src/handlers/embeddings.js — cloud worker handler: auth, validation, rate limits, CORS |
Coverage Summary (59 tests)
embeddingsCore.test.js (36 tests)
buildEmbeddingsBody: single string, array, encoding_format, default floatbuildEmbeddingsUrl: openai, openrouter, openai-compatible-*, unsupported providersbuildEmbeddingsHeaders: per-provider header sets, fallback to accessTokenhandleEmbeddingsCoreinput validation: missing, wrong type, null, emptyhandleEmbeddingsCoresuccess: response format, CORS, Content-Type, callbackshandleEmbeddingsCoreerrors: 400/429/500, network error, invalid JSONhandleEmbeddingsCoretoken refresh: 401 retry, graceful fallback
embeddings.cloud.test.js (23 tests)
- CORS OPTIONS: 200 response, empty body, correct headers
- Authentication: missing key, bad format, old-format key, wrong key value, valid key
- Body validation: invalid JSON, missing model, missing input, bad model
- Happy path: single string, array, correct delegation, CORS header, machineId override
- Rate limiting: all accounts rate-limited → 503 + Retry-After, no credentials → 400
- Error propagation: non-fallback errors passed through, 429 exhausts accounts
- machineId override: validates key, rejects wrong key