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mateo-berri
bd1cddcbe2
Introduce litellm/translation, the hub-and-spoke v2 of core LLM translation from Mateo's Cycle 4 scope. Inbound parsers map a request schema into a frozen IR, provider serializers map the IR onto one wire format, and dispatch.route is the single v1/v2 fork carrying the same-family fast-path predicate This first slice ports the OpenAI-chat-in to Anthropic-out request path and proves it differential-green: a corpus runs the v1 AnthropicConfig chain (map_openai_params then transform_request) and the v2 pipeline over the same requests and asserts identical normalized JSON across text, system, multi-turn, stop and stream, tools, every tool_choice form, tool-call round-trips, parallel tool-result merging, assistant-text-plus-tool-call, images, and the max_tokens default Built on Expression (frozen Block and Map, Result, tagged unions); failures are values, I/O is an injected port, and the package is import-isolated from the v1 stack, enforced by a test that stands in for an import-linter contract. The anthropic flag stays off, and response and stream parsing, the other inbound schemas and providers, and wiring route into completion are follow-ups
In total litellm runs 1000+ tests
[02/20/2025] Update:
To make it easier to contribute and map what behavior is tested,
we've started mapping the litellm directory in tests/test_litellm
This folder can only run mock tests.