def test_parents_are_not_found(self, makedirs, listdir):
block_path = makedirs('sys/block')
slaves_path = makedirs('sys/block/dm-4/slaves')
makedirs('sys/block/dm-4/slaves/dm-5')
listdir(paths={
'/sys/block/dm-4/slaves': slaves_path,
'/sys/block': block_path})
result = api._vdo_parents(['dm-3'])
assert result == []
def test_parents_are_not_found(self, makedirs, listdir):
block_path = makedirs('sys/block')
slaves_path = makedirs('sys/block/dm-4/slaves')
makedirs('sys/block/dm-4/slaves/dm-5')
listdir(paths={
'/sys/block/dm-4/slaves': slaves_path,
'/sys/block': block_path})
result = api._vdo_parents(['dm-3'])
assert result == []
