nixpkgs/nixos/tests/lightdm.nix

import ./make-test-python.nix (
  { pkgs, ... }:
  {
    name = "lightdm";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ aszlig ];
    };

    nodes.machine =
      { ... }:
      {
        imports = [ ./common/user-account.nix ];
        services.xserver.enable = true;
        services.xserver.displayManager.lightdm.enable = true;
        services.displayManager.defaultSession = "none+icewm";
        services.xserver.windowManager.icewm.enable = true;
      };

    enableOCR = true;

    testScript =
      { nodes, ... }:
      let
        user = nodes.machine.config.users.users.alice;
      in
      ''
        start_all()
        machine.wait_for_text("${user.description}")
        machine.screenshot("lightdm")
        machine.send_chars("${user.password}\n")
        machine.wait_for_file("${user.home}/.Xauthority")
        machine.succeed("xauth merge ${user.home}/.Xauthority")
        machine.wait_for_window("^IceWM ")
      '';
  }
)