nixpkgs/nixos/tests/mate-wayland.nix

import ./make-test-python.nix ({ pkgs, lib, ... }: {
  name = "mate-wayland";

  meta.maintainers = lib.teams.mate.members;

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

    services.xserver.enable = true;
    services.displayManager = {
      sddm.enable = true; # https://github.com/canonical/lightdm/issues/63
      sddm.wayland.enable = true;
      defaultSession = "MATE";
      autoLogin = {
        enable = true;
        user = "alice";
      };
    };
    services.xserver.desktopManager.mate.enableWaylandSession = true;

    hardware.pulseaudio.enable = true;

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

  enableOCR = true;

  testScript = { nodes, ... }:
    let
      user = nodes.machine.users.users.alice;
    in
    ''
      machine.wait_for_unit("display-manager.service")

      with subtest("Wait for Wayland server"):
          machine.wait_for_file("/run/user/${toString user.uid}/wayland-1")

      with subtest("Check if MATE session components actually start"):
          for i in ["wayfire", "mate-panel", "mate-wayland.sh", "mate-wayland-components.sh"]:
              machine.wait_until_succeeds(f"pgrep -f {i}")
          machine.wait_for_text('(Applications|Places|System)')
          # It is expected that this applet doesn't work in Wayland
          machine.wait_for_text('WorkspaceSwitcherApplet')

      with subtest("Check if various environment variables are set"):
          cmd = "xargs --null --max-args=1 echo < /proc/$(pgrep -xf mate-panel)/environ"
          machine.succeed(f"{cmd} | grep 'XDG_SESSION_TYPE' | grep 'wayland'")
          machine.succeed(f"{cmd} | grep 'XDG_SESSION_DESKTOP' | grep 'MATE'")
          machine.succeed(f"{cmd} | grep 'MATE_PANEL_APPLETS_DIR' | grep '${pkgs.mate.mate-panel-with-applets.pname}'")

      with subtest("Check if Wayfire config is properly configured"):
          for i in ["button_style = mate", "firedecor", "mate-wayland-components.sh"]:
              machine.wait_until_succeeds(f"cat /home/${user.name}/.config/mate/wayfire.ini | grep '{i}'")

      with subtest("Check if Wayfire has ever coredumped"):
          machine.fail("coredumpctl --json=short | grep wayfire")
          machine.sleep(10)
          machine.screenshot("screen")
    '';
})