import pytest

from symuid.tag_interface import ID3

import mutagen
import os
import shutil


@pytest.mark.parametrize(('track_name', 'tag_label', 'expected_text'), [
    ('id3v2.4-empty.mp3', 'TPE1', None),
    ('id3v2.4-typical.mp3', 'TPE1', 'some artist'),
    ('id3v2.4-typical.mp3', 'COMM::eng', 'some comment'),
    ('id3v2.4-typical.mp3', 'COMM', None),
])
def test__get_single_text(tracks_dir_path, track_name, tag_label, expected_text):
    iface = ID3(mutagen.File(os.path.join(tracks_dir_path, track_name)))
    assert expected_text == iface._get_single_text(tag_label)


@pytest.mark.parametrize(('track_name', 'expected_comment'), [
    ('id3v2.4-empty.mp3', None),
    ('id3v2.4-typical.mp3', 'some comment'),
])
def test_get_comment(tracks_dir_path, track_name, expected_comment):
    iface = ID3(mutagen.File(os.path.join(tracks_dir_path, track_name)))
    assert expected_comment == iface.get_comment()