def test_mount_btrfs_root_volume(self, mock_commands): apt_btrfs = AptBtrfsSnapshot( fstab=os.path.join(self.testdir, "data", "fstab")) mock_commands.mount.return_value = True mock_commands.umount.return_value = True mp = apt_btrfs.mount_btrfs_root_volume() self.assertTrue("apt-btrfs-snapshot-mp-" in mp) self.assertTrue(apt_btrfs.umount_btrfs_root_volume()) self.assertFalse(os.path.exists(mp))