add set

packages/go_router_builder/lib/src/type_helpers.dart

@@ -284,6 +284,10 @@ class _TypeHelperIterable extends _TypeHelper {
       } else if (const TypeChecker.fromRuntime(Set)
           .isAssignableFromType(parameterElement.type)) {
         iterableCaster = '.toSet()';
+        if (!parameterElement.type.isNullableType &&
+            !parameterElement.hasDefaultValue) {
+          fallBack = '?? const {}';
+        }
       }
 
       return '''

packages/go_router_builder/test_inputs/list.dart.expect

@@ -37,4 +37,4 @@ extension $ListRouteExtension on ListRoute {
       context.pushReplacement(location);
 
   void replace(BuildContext context) => context.replace(location);
-}
+}

packages/go_router_builder/test_inputs/set.dart

@@ -0,0 +1,17 @@
+// 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.
+
+import 'package:go_router/go_router.dart';
+
+@TypedGoRoute<SetRoute>(path: '/set-route')
+class SetRoute extends GoRouteData {
+  SetRoute({
+    required this.ids,
+    this.nullableIds,
+    this.idsWithDefaultValue = const <int>{0},
+  });
+  final Set<int> ids;
+  final Set<int>? nullableIds;
+  final Set<int> idsWithDefaultValue;
+}

packages/go_router_builder/test_inputs/set.dart.expect

@@ -0,0 +1,40 @@
+RouteBase get $setRoute => GoRouteData.$route(
+      path: '/set-route',
+      factory: $SetRouteExtension._fromState,
+    );
+
+extension $SetRouteExtension on SetRoute {
+  static SetRoute _fromState(GoRouterState state) => SetRoute(
+        ids: state.uri.queryParametersAll['ids']?.map(int.parse).toSet() ??
+            const {},
+        nullableIds: state.uri.queryParametersAll['nullable-ids']
+            ?.map(int.parse)
+            .toSet(),
+        idsWithDefaultValue: state
+                .uri.queryParametersAll['ids-with-default-value']
+                ?.map(int.parse)
+                .toSet() ??
+            const <int>{0},
+      );
+
+  String get location => GoRouteData.$location(
+        '/set-route',
+        queryParams: {
+          'ids': ids.map((e) => e.toString()).toList(),
+          if (nullableIds != null)
+            'nullable-ids': nullableIds?.map((e) => e.toString()).toList(),
+          if (idsWithDefaultValue != const <int>{0})
+            'ids-with-default-value':
+                idsWithDefaultValue.map((e) => e.toString()).toList(),
+        },
+      );
+
+  void go(BuildContext context) => context.go(location);
+
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  void replace(BuildContext context) => context.replace(location);
+}

packages/go_router_builder/tool/run_tests.dart

@@ -28,6 +28,9 @@ Future<void> main() async {
       .where((File f) => f.path.endsWith('.dart'))
       .toList();
   for (final File file in testFiles) {
+    if(!file.path.contains('set.dart')) {
+      continue;
+    }
     final String fileName = file.path.split('/').last;
     final File expectFile = File(p.join('${file.path}.expect'));
     if (!expectFile.existsSync()) {
@@ -59,6 +62,8 @@ Future<void> main() async {
           .format(results.join('\n\n'))
           .trim()
           .replaceAll('\r\n', '\n');
+
+      print(generated);
       expect(generated, equals(expectResult.replaceAll('\r\n', '\n')));
     }, timeout: const Timeout(Duration(seconds: 100)));
   }