'Error case: The volume is a V-VOL(MSGID0618-E).'

@mock.patch.object(vsp_utils, 'execute', side_effect=_execute)
def test_extend_volume_volume_ldev_is_vvol(self, execute):

    self.assertRaises(exception.VSPError, self.driver.extend_volume, TEST_VOLUME[5], 256)
