depot/third_party/nixpkgs/nixos/tests/cage.nix

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

  {
    name = "cage";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ matthewbauer ];
    };

    nodes.machine =
      { ... }:

      {
        imports = [ ./common/user-account.nix ];

        fonts.packages = with pkgs; [ dejavu_fonts ];

        services.cage = {
          enable = true;
          user = "alice";
          program = "${pkgs.xterm}/bin/xterm";
        };

        # Need to switch to a different GPU driver than the default one (-vga std) so that Cage can launch:
        virtualisation.qemu.options = [ "-vga none -device virtio-gpu-pci" ];
      };

    enableOCR = true;

    testScript =
      { nodes, ... }:
      let
        user = nodes.machine.config.users.users.alice;
      in
      ''
        with subtest("Wait for cage to boot up"):
            start_all()
            machine.wait_for_file("/run/user/${toString user.uid}/wayland-0.lock")
            machine.wait_until_succeeds("pgrep xterm")
            machine.wait_for_text("alice@machine")
            machine.screenshot("screen")
      '';
  }
)