"""Tests for writable HF cache configuration."""

from __future__ import annotations

import os

import pytest

from vivamais.hf_cache import configure_hf_cache, hf_home


class TestHfCache:
    def test_configure_hf_cache_sets_env(self, tmp_path: os.PathLike[str]) -> None:
        app_root = str(tmp_path / "app")
        os.makedirs(app_root, exist_ok=True)
        hf = configure_hf_cache(app_root)
        assert hf == os.path.join(app_root, ".cache", "huggingface")
        assert os.environ["HF_HOME"] == hf
        assert os.environ["HUGGINGFACE_HUB_CACHE"] == os.path.join(hf, "hub")
        assert os.path.isdir(os.path.join(app_root, ".cache", "tmp"))

    def test_hf_home_reads_configured_env(self, monkeypatch: pytest.MonkeyPatch) -> None:
        monkeypatch.setenv("HF_HOME", "/tmp/test-hf")
        assert hf_home() == "/tmp/test-hf"