def test(self):
vol = Volume(self.device, self.mpoint)
# When trying to do filesystem operations without having a fs on volume ValueError raises
self.assertRaises(StorageError, vol.freeze)
self.assertRaises(StorageError, vol.unfreeze)
# After creating a filesystem ValueError dissapears
vol.mkfs('ext3')
self.assertTrue(vol.fstype, 'ext3')
vol.freeze()
vol.unfreeze()
# When volume is mounted without mpoint specify, it gets from volume mpoint property
self.assertFalse(vol.mounted())
vol.mount()
self.assertTrue(vol.mpoint, self.mpoint)
self.assertTrue(vol.mounted())
# When volume is unmounted, volume mpoint property remains
vol.umount()
self.assertEqual(vol.mpoint, self.mpoint)
self.assertFalse(vol.mounted())
snap = vol.snapshot(description='test snap')
self.assertTrue(isinstance(snap, Snapshot))
self.assertEqual(snap.description, 'test snap')
