os/tests/first-test.nix

{
  pkgs,
  lib,
  ...
}: {
  name = "firstTest";

  nodes.test-machine = {suites ? null, ...}: {
    imports = suites.iso;

    home-manager.users.pub-solar.programs.bash.shellAliases = {
      test-x11 = "glinfo | tee /tmp/test-x11.out && touch /tmp/test-x11-exit-ok";
      test-wayland = "wayland-info | tee /tmp/test-wayland.out && touch /tmp/test-wayland-exit-ok";
    };

    # source: https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/tests/sway.nix
    environment = {
      # For glinfo and wayland-info:
      systemPackages = with pkgs; [mesa-demos wayland-utils alacritty];
      # Use a fixed SWAYSOCK path (for swaymsg):
      variables = {
        "SWAYSOCK" = "/tmp/sway-ipc.sock";
        # TODO: Investigate if we can get hardware acceleration to work (via
        # virtio-gpu and Virgil). We currently have to use the Pixman software
        # renderer since the GLES2 renderer doesn't work inside the VM (even
        # with WLR_RENDERER_ALLOW_SOFTWARE):
        # "WLR_RENDERER_ALLOW_SOFTWARE" = "1";
        "WLR_RENDERER" = "pixman";
      };

      # To help with OCR:
      etc."xdg/foot/foot.ini".text = lib.generators.toINI {} {
        main = {
          font = "inconsolata:size=14";
        };
        colors = rec {
          foreground = "000000";
          background = "ffffff";
          regular2 = foreground;
        };
      };
    };

    fonts.fonts = [pkgs.inconsolata];

    # Need to switch to a different GPU driver than the default one (-vga std) so that Sway can launch:
    virtualisation.qemu.options = ["-vga none -device virtio-gpu-pci"];
    virtualisation.cores = 4;
    virtualisation.memorySize = 2048;
  };

  enableOCR = true;

  testScript = ''
    import shlex
    def swaymsg(command: str, succeed=True):
        with machine.nested(f"sending swaymsg {command!r}" + " (allowed to fail)" * (not succeed)):
          (machine.succeed if succeed else machine.execute)(
            f"su - pub-solar -c {shlex.quote('swaymsg -- ' + command)}"
          )


    machine.wait_for_unit("multi-user.target")

    # To check the version:
    print(machine.succeed("sway --version"))

    # Wait for Sway to complete startup:
    machine.wait_for_file("/run/user/1000/wayland-1")
    machine.wait_for_file("/tmp/sway-ipc.sock")

    # Start a terminal (foot) on workspace 3:
    machine.wait_for_text("1")
    machine.send_key("meta_l-3")
    machine.sleep(3)
    machine.send_key("meta_l-ret")
    machine.sleep(10)
    machine.send_chars("whoami\n")
    machine.sleep(3)
    machine.wait_for_text("pub-solar")
    machine.send_chars("test-wayland\n")
    machine.wait_for_file("/tmp/test-wayland-exit-ok")
    print(machine.succeed("cat /tmp/test-wayland.out"))
    machine.copy_from_vm("/tmp/test-wayland.out")
    machine.sleep(3)
    machine.screenshot("foot_wayland_info")
    machine.send_key("meta_l-shift-q")
    machine.wait_until_fails("pgrep foot")
  '';
}