nixos/tests/oku: init (#425960)

nixos/tests/all-tests.nix

···
     imports = [ ./odoo.nix ];
     _module.args.package = pkgs.odoo16;
   };
+  oku = runTest ./oku.nix;
   oncall = runTest ./web-apps/oncall.nix;
   # 9pnet_virtio used to mount /nix partition doesn't support
   # hibernation. This test happens to work on x86_64-linux but

nixos/tests/oku.nix

···
+{
+  lib,
+  pkgs,
+  ...
+}:
+{
+  name = "oku";
+
+  meta.maintainers = with lib.maintainers; [ ethancedwards8 ];
+
+  nodes.machine = {
+    imports = [ ./common/x11.nix ];
+
+    environment.systemPackages = with pkgs; [ oku ];
+  };
+
+  enableOCR = true;
+
+  testScript = ''
+    machine.wait_for_x()
+
+    with subtest("Wait until Oku has finished loading the Valgrind docs page"):
+      machine.execute("xterm -e 'oku -n file://${pkgs.valgrind.doc}/share/doc/valgrind/html/index.html' >&2 &");
+      machine.wait_for_window("oku")
+  '';
+
+}

pkgs/by-name/ok/oku/package.nix

···
   pango,
   webkitgtk_6_0,
   nix-update-script,
+  nixosTests,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
···
     cp -r ${finalAttrs.src}/data/hicolor $out/share/icons
   '';
 
-  passthru.updateScript = nix-update-script { };
+  passthru = {
+    updateScript = nix-update-script { };
+    tests = { inherit (nixosTests) oku; };
+  };
 
   meta = {
     description = "Browser for the Oku Network and Peer-to-peer sites";