nixos/actual: Add tests for user, group, port and dataDir setting

nixos/tests/actual.nix

@@ -9,8 +9,47 @@
       services.actual.enable = true;
     };
 
+  nodes.machine2 =
+    { ... }:
+    {
+      services.actual = {
+        enable = true;
+        user = "actual";
+        group = "actual";
+        settings = {
+          port = 7000;
+          dataDir = "/var/lib/actual-test";
+        };
+      };
+
+      users.users.actual = {
+        group = "actual";
+        home = "/var/lib/actual-test";
+        isSystemUser = true;
+      };
+
+      users.groups.actual = { };
+
+      systemd.tmpfiles.settings = {
+        "10-actualdir" = {
+          "/var/lib/actual-test" = {
+            d = {
+              group = "actual";
+              mode = "0755";
+              user = "actual";
+            };
+          };
+        };
+      };
+    };
+
   testScript = ''
+    start_all()
+
     machine.wait_for_open_port(3000)
     machine.succeed("curl -fvvv -Ls http://localhost:3000/ | grep 'Actual'")
+
+    machine2.wait_for_open_port(7000)
+    machine2.succeed("curl -fvvv -Ls http://localhost:7000/ | grep 'Actual'")
   '';
 }