def test_add_unregistered_media_with_replace_flag_set():
en_sub = Media(group_id='subs', type='SUBTITLES', name='English subs',
uri='en_subs.vtt')
media_list = MediaList()
media_list.add(en_sub, replace=True)
assert len(media_list) == 1
def test_equivalent_media_element_added_if_specified():
en_sub_1 = Media(group_id='subs', type='SUBTITLES', name='English subs',
uri='en_subs.vtt')
en_sub_2 = Media(group_id='subs', type='SUBTITLES', name='English subs',
uri='en_subs_2.vtt', default='YES')
media_list = MediaList([en_sub_1])
media_list.add(en_sub_2, replace=True)
assert len(media_list) == 1
en_sub = media_list.pop()
assert en_sub.uri == 'en_subs_2.vtt' and en_sub.default == 'YES'