from gpu_rent.config import load_config
from gpu_rent.ssh_keys import ensure_ed25519, public_path


def test_load_config_missing_auth(monkeypatch, tmp_path):
    monkeypatch.setenv("HOME", str(tmp_path))
    monkeypatch.setenv("USERPROFILE", str(tmp_path))
    for key in (
        "OS_AUTH_URL",
        "OS_USER_DOMAIN_NAME",
        "OS_USERNAME",
        "OS_PASSWORD",
        "OS_PROJECT_ID",
        "OS_REGION_NAME",
        "GPU_RENT_AZ",
    ):
        monkeypatch.delenv(key, raising=False)
    cfg = load_config(require_auth=False)
    assert not cfg.auth_ok
    assert "OS_USERNAME" in cfg.missing
    assert cfg.data_volume_size_gb == 100


def test_ssh_key_generate(tmp_path):
    private = tmp_path / "id_ed25519"
    got, pub = ensure_ed25519(private)
    assert got == private
    assert pub == public_path(private)
    assert private.is_file()
    assert pub.is_file()
    text = pub.read_text(encoding="utf-8")
    assert text.startswith("ssh-ed25519")
    ensure_ed25519(private)
    assert private.read_bytes()