nixos/tests/slimserver: add end to end with squeezelite

nixos/tests/slimserver.nix

···
 
   nodes.machine = { ... }: {
     services.slimserver.enable = true;
+    services.squeezelite = {
+      enable = true;
+      extraArguments = "-s 127.0.0.1 -d slimproto=info";
+    };
+    sound.enable = true;
+    boot.initrd.kernelModules = ["snd-dummy"];
   };
 
   testScript =
     ''
-      machine.wait_for_unit("slimserver.service")
-      machine.wait_for_open_port(9000)
-      machine.succeed("curl http://localhost:9000")
-      machine.wait_until_succeeds("journalctl -eu slimserver.service | grep 'Completed dbOptimize Scan'")
+      import json
+      rpc_get_player = {
+          "id": 1,
+          "method": "slim.request",
+          "params":[0,["player", "id", "0", "?"]]
+      }
+
+      with subtest("slimserver is started"):
+          machine.wait_for_unit("slimserver.service")
+          # give slimserver a moment to report errors
+          machine.sleep(2)
+
+      with subtest('slimserver module errors are not reported'):
+          machine.fail("journalctl -u slimserver.service | grep 'throw_exception'")
+          machine.fail("journalctl -u slimserver.service | grep 'not installed'")
+          machine.fail("journalctl -u slimserver.service | grep 'not found'")
+          machine.fail("journalctl -u slimserver.service | grep 'The following CPAN modules were found but cannot work with Logitech Media Server'")
+          machine.fail("journalctl -u slimserver.service | grep 'please use the buildme.sh'")
+
+      with subtest('slimserver is ready'):
+          machine.wait_for_open_port(9000)
+          machine.wait_until_succeeds("journalctl -u slimserver.service | grep 'Completed dbOptimize Scan'")
+
+      with subtest("squeezelite player successfully connects to slimserver"):
+          machine.wait_for_unit("squeezelite.service")
+          machine.wait_until_succeeds("journalctl -u squeezelite.service | grep 'slimproto:937 connected'")
+          player_mac = machine.wait_until_succeeds("journalctl -eu squeezelite.service | grep 'sendHELO:148 mac:'").strip().split(" ")[-1]
+          player_id = machine.succeed(f"curl http://localhost:9000/jsonrpc.js -g -X POST -d '{json.dumps(rpc_get_player)}'")
+          assert player_mac == json.loads(player_id)["result"]["_id"], "squeezelite player not found"
     '';
 })

pkgs/applications/audio/squeezelite/default.nix

···
 , openssl
 , portaudioSupport ? stdenv.isDarwin
 , portaudio
+, slimserver
 , AudioToolbox
 , AudioUnit
 , Carbon
···
     runHook postInstall
   '';
 
-  passthru.updateScript = ./update.sh;
+  passthru = {
+    inherit (slimserver) tests;
+    updateScript = ./update.sh;
+  };
 
   meta = with lib; {
     description = "Lightweight headless squeezebox client emulator";