def test_get_chapter_config_hero_dir():
    chapter_config = get_chapter_config(get_config('2020'), 'jamstack')
    assert chapter_config.get('hero_dir') == '2020'
def test_get_invalid_chapter_config():
    chapter_config = get_chapter_config(get_config('2019'), 'random')
    assert chapter_config is None
def test_get_chapter_config_no_hero_dir():
    chapter_config = get_chapter_config(get_config('2020'), 'javascript')
    assert chapter_config.get('hero_dir') is None
def test_get_valid_chapter_config():
    chapter_config = get_chapter_config(get_config('2019'), 'javascript')
    assert chapter_config is not None