import ./make-test-python.nix ({ ... }: { name = "snapper"; nodes.machine = { pkgs, lib, ... }: { boot.initrd.postDeviceCommands = '' ${pkgs.btrfs-progs}/bin/mkfs.btrfs -f -L aux /dev/vdb ''; virtualisation.emptyDiskImages = [ 4096 ]; virtualisation.fileSystems = { "/home" = { device = "/dev/disk/by-label/aux"; fsType = "btrfs"; }; }; services.snapper.configs.home.SUBVOLUME = "/home"; services.snapper.filters = "/nix"; }; testScript = { nodes, ... }: let inherit (nodes.machine.services.snapper) snapshotRootOnBoot; in '' machine.succeed("btrfs subvolume create /home/.snapshots") machine.succeed("snapper -c home list") machine.succeed("snapper -c home create --description empty") machine.succeed("echo test > /home/file") machine.succeed("snapper -c home create --description file") machine.succeed("snapper -c home status 1..2") machine.succeed("snapper -c home undochange 1..2") machine.fail("ls /home/file") machine.succeed("snapper -c home delete 2") machine.succeed("systemctl --wait start snapper-timeline.service") machine.succeed("systemctl --wait start snapper-cleanup.service") machine.${if snapshotRootOnBoot then "succeed" else "fail"}("systemctl cat snapper-boot.service") ''; })