import os

from config import CFG


def test_device_string_valid():
    assert CFG.device in {"mps", "cuda", "cpu"}


def test_num_labels_matches_label_names():
    assert CFG.num_labels == len(CFG.label_names)


def test_dirs_created_on_init():
    assert os.path.isdir(CFG.models_dir)
    assert os.path.isdir(CFG.outputs_dir)
    assert os.path.isdir(CFG.logs_dir)


def test_label_names_correct():
    assert CFG.label_names == ["World", "Sports", "Business", "Sci/Tech"]


def test_max_length_positive():
    assert CFG.max_length > 0