shattered-pixel-dungeon: add nixos test

nixos/tests/all-tests.nix

@@ -306,6 +306,7 @@ in
   sanoid = handleTest ./sanoid.nix {};
   sddm = handleTest ./sddm.nix {};
   service-runner = handleTest ./service-runner.nix {};
+  shattered-pixel-dungeon = handleTest ./shattered-pixel-dungeon.nix {};
   shiori = handleTest ./shiori.nix {};
   signal-desktop = handleTest ./signal-desktop.nix {};
   simple = handleTest ./simple.nix {};

nixos/tests/shattered-pixel-dungeon.nix

@@ -0,0 +1,29 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "shattered-pixel-dungeon";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ fgaz ];
+  };
+
+  machine = { config, pkgs, ... }: {
+    imports = [
+      ./common/x11.nix
+    ];
+
+    services.xserver.enable = true;
+    environment.systemPackages = [ pkgs.shattered-pixel-dungeon ];
+  };
+
+  enableOCR = true;
+
+  testScript =
+    ''
+      machine.wait_for_x()
+      machine.execute("shattered-pixel-dungeon &")
+      machine.wait_for_window(r"Shattered Pixel Dungeon")
+      machine.sleep(5)
+      if "Enter" not in machine.get_screen_text():
+          raise Exception("Program did not start successfully")
+      machine.screenshot("screen")
+    '';
+})
+

pkgs/games/shattered-pixel-dungeon/default.nix

@@ -1,6 +1,7 @@
 { stdenv
 , makeWrapper
 , fetchFromGitHub
+, nixosTests
 , gradle_5
 , perl
 , jre
@@ -66,6 +67,10 @@ in stdenv.mkDerivation rec {
       --add-flags "-jar $out/share/shattered-pixel-dungeon.jar"
   '';
 
+  passthru.tests = {
+    shattered-pixel-dungeon-starts = nixosTests.shattered-pixel-dungeon;
+  };
+
   meta = with stdenv.lib; {
     homepage = "https://shatteredpixel.com/";
     downloadPage = "https://github.com/00-Evan/shattered-pixel-dungeon/releases";