def test_dmname_to_blkdev_mapping_empty(self):
"""dmname_to_blkdev_mapping returns empty dict when dmsetup is empty.
"""
self.m_subp.return_value = ("No devices found", "")
expected_mapping = {}
self.assertEqual(expected_mapping,
multipath.dmname_to_blkdev_mapping())
def test_dmname_to_blkdev_mapping(self):
"""dmname_to_blkdev_mapping returns dmname to blkdevice dictionary."""
self.m_subp.return_value = (DMSETUP_LS_BLKDEV_OUTPUT, "")
expected_mapping = {
'mpatha': '/dev/dm-0',
'mpatha-part1': '/dev/dm-1',
'1gb zero': '/dev/dm-2',
}
self.assertEqual(expected_mapping,
multipath.dmname_to_blkdev_mapping())