nixpkgs/nixos/tests/udisks2.nix

import ./make-test-python.nix ({ pkgs, ... }:

let

  stick = pkgs.fetchurl {
    url = "https://nixos.org/~eelco/nix/udisks-test.img.xz";
    sha256 = "0was1xgjkjad91nipzclaz5biv3m4b2nk029ga6nk7iklwi19l8b";
  };

in

{
  name = "udisks2";
  meta = with pkgs.lib.maintainers; {
    maintainers = [ eelco ];
  };

  nodes.machine =
    { ... }:
    { services.udisks2.enable = true;
      imports = [ ./common/user-account.nix ];

      security.polkit.extraConfig =
        ''
          polkit.addRule(function(action, subject) {
            if (subject.user == "alice") return "yes";
          });
        '';
    };

  testScript =
    ''
      import lzma

      with lzma.open(
          "${stick}"
      ) as data, open(machine.state_dir / "usbstick.img", "wb") as stick:
          stick.write(data.read())

      machine.succeed("udisksctl info -b /dev/vda >&2")
      machine.fail("udisksctl info -b /dev/sda1")

      # Attach a USB stick and wait for it to show up.
      machine.send_monitor_command(
          f"drive_add 0 id=stick,if=none,file={stick.name},format=raw"
      )
      machine.send_monitor_command("device_add usb-storage,id=stick,drive=stick")
      machine.wait_until_succeeds("udisksctl info -b /dev/sda1")
      machine.succeed("udisksctl info -b /dev/sda1 | grep 'IdLabel:.*USBSTICK'")

      # Mount the stick as a non-root user and do some stuff with it.
      machine.succeed("su - alice -c 'udisksctl info -b /dev/sda1'")
      machine.succeed("su - alice -c 'udisksctl mount -b /dev/sda1'")
      machine.succeed(
          "su - alice -c 'cat /run/media/alice/USBSTICK/test.txt' | grep -q 'Hello World'"
      )
      machine.succeed("su - alice -c 'echo foo > /run/media/alice/USBSTICK/bar.txt'")

      # Unmounting the stick should make the mountpoint disappear.
      machine.succeed("su - alice -c 'udisksctl unmount -b /dev/sda1'")
      machine.fail("[ -d /run/media/alice/USBSTICK ]")

      # Remove the USB stick.
      machine.send_monitor_command("device_del stick")
      machine.wait_until_fails("udisksctl info -b /dev/sda1")
      machine.fail("[ -e /dev/sda ]")
    '';

})