from providers.chatgpt.usage import _parse_window, clamp_percent


def test_clamp_percent_bounds():
    assert clamp_percent(-1) == 0
    assert clamp_percent(150) == 100
    assert clamp_percent(49.6) == 50


def test_clamp_percent_invalid():
    assert clamp_percent(None) == 0
    assert clamp_percent("bad") == 0


def test_parse_window_valid():
    window = {
        "used_percent": 34.4,
        "limit_window_seconds": 3600,
        "reset_after_seconds": 120,
        "reset_at": 999,
    }
    parsed = _parse_window(window)
    assert parsed == {
        "used_percent": 34,
        "limit_window_seconds": 3600,
        "reset_after_seconds": 120,
        "reset_at": 999,
    }


def test_parse_window_none():
    assert _parse_window(None) is None