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 float
• buildEmbeddingsUrl: openai, openrouter, openai-compatible-*, unsupported providers
• buildEmbeddingsHeaders: per-provider header sets, fallback to accessToken
• handleEmbeddingsCore input validation: missing, wrong type, null, empty
• handleEmbeddingsCore success: response format, CORS, Content-Type, callbacks
• handleEmbeddingsCore errors: 400/429/500, network error, invalid JSON
• handleEmbeddingsCore token 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