Update example tests

Author: StevenSorial

packages/go_router_builder/example/lib/separate_file_route.dart

@@ -0,0 +1,35 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// ignore_for_file: public_member_api_docs, unreachable_from_main
+
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import 'stateful_shell_route_initial_location_example.dart';
+
+class OrdersRouteData extends GoRouteData with $OrdersRouteData {
+  const OrdersRouteData();
+
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return const OrdersPageView(label: 'Orders page');
+  }
+}
+
+class OrdersPageView extends StatelessWidget {
+  const OrdersPageView({
+    required this.label,
+    super.key,
+  });
+
+  final String label;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Text(label),
+    );
+  }
+}

packages/go_router_builder/example/lib/stateful_shell_route_initial_location_example.dart

@@ -7,6 +7,8 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 
+import 'separate_file_route.dart';
+
 part 'stateful_shell_route_initial_location_example.g.dart';
 
 void main() => runApp(App());
@@ -118,15 +120,6 @@ class NotificationsRouteData extends GoRouteData with _$NotificationsRouteData {
   }
 }
 
-class OrdersRouteData extends GoRouteData with _$OrdersRouteData {
-  const OrdersRouteData();
-
-  @override
-  Widget build(BuildContext context, GoRouterState state) {
-    return const OrdersPageView(label: 'Orders page');
-  }
-}
-
 class MainPageView extends StatelessWidget {
   const MainPageView({
     required this.navigationShell,
@@ -258,19 +251,3 @@ class NotificationsSubPageView extends StatelessWidget {
     );
   }
 }
-
-class OrdersPageView extends StatelessWidget {
-  const OrdersPageView({
-    required this.label,
-    super.key,
-  });
-
-  final String label;
-
-  @override
-  Widget build(BuildContext context) {
-    return Center(
-      child: Text(label),
-    );
-  }
-}