"""Regression: LLM dispatcher exposes all three providers and rejects unknowns."""

import pytest

from api import llm


def test_providers_registered():
    assert set(llm._PROVIDERS) == {"groq", "anthropic", "openai"}


def test_unknown_provider_raises(monkeypatch):
    monkeypatch.setattr(llm.get_settings(), "llm_provider", "definitely-not-a-provider", raising=False)
    with pytest.raises(ValueError, match="unknown llm_provider"):
        llm.chat(system="s", user="u")