def test_return_structure(self, patched_call):
lsblk_stdout = [
'/dev/dm-0 /dev/mapper/ceph--8b2684eb--56ff--49e4--8f28--522e04cbd6ab-osd--data--9fc29fbf--3b5b--4066--be10--61042569b5a7 lvm',
'/dev/vda /dev/vda disk',
'/dev/vda1 /dev/vda1 part',
'/dev/vdb /dev/vdb disk',]
patched_call.return_value = (lsblk_stdout, '', 0)
disks = disk.get_block_devs_lsblk()
assert len(disks) == len(lsblk_stdout)
assert len(disks[0]) == 3
def test_raise_on_failure(self, patched_call):
patched_call.return_value = ([], 'error', 1)
with pytest.raises(OSError):
disk.get_block_devs_lsblk()
def test_empty_lsblk(self, patched_call):
patched_call.return_value = ([], '', 0)
disks = disk.get_block_devs_lsblk()
assert len(disks) == 0