from soundchanger.change import reformat_change_to_regex


def test_replace_spaces():
    assert reformat_change_to_regex(' a > b / c _ d ') == 'a>b/c_d'

def test_replace_brackets_and_commas():
    assert reformat_change_to_regex('a>b/{#,a}_') == 'a>b/(#|a)_'

def test_replace_categories():
    assert reformat_change_to_regex('a>b/V_',
        categories={'V': 'aiu'}
    ) == 'a>b/(a|i|u)_'

def test_replace_categories_in_brackets():
    assert reformat_change_to_regex('a>b/{#,V}_',
        categories={'V': 'aiu'}
    ) == 'a>b/(#|(a|i|u))_'

def test_replace_zero_characters():
    assert reformat_change_to_regex('a>∅') == 'a>'