import pytest
from chemistry import calculate_lye


def test_chemistry_engine():
    recipe = {"coconut oil": 150, "olive oil": 350}
    result = calculate_lye(recipe, superfat=5)
    assert isinstance(result, dict)
    assert 'naoh_g' in result


def test_ollama_optional():
    pytest.importorskip("ollama")
    import ollama
    response = ollama.chat(
        model="llama3.2:latest",
        messages=[{"role": "user", "content": "Say hello in one sentence."}]
    )
    assert 'message' in response


def test_hf_login_optional():
    pytest.importorskip("huggingface_hub")
    from huggingface_hub import whoami
    user = whoami()
    assert 'name' in user