[go_router] Fixes missing state.extra in onException() (flutter#5077)

This will help in knowing the extra Object passed when the _non-existing-location_ was asked.

*List which issues are fixed by this PR. You must list at least one issue.*
- The issue looks small, I will create it if needed by the maintainers

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*
- No breaking changes

Author: hrishikesh-kadam

packages/go_router/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 11.1.3
+
+- Fixes missing state.extra in onException().
+
 ## 11.1.2
 
 - Fixes a bug where the known routes and initial route were logged even when `debugLogDiagnostics` was set to `false`.

packages/go_router/lib/src/configuration.dart

@@ -188,9 +188,14 @@ class RouteConfiguration {
   }
 
   /// The match used when there is an error during parsing.
-  static RouteMatchList _errorRouteMatchList(Uri uri, GoException exception) {
+  static RouteMatchList _errorRouteMatchList(
+    Uri uri,
+    GoException exception, {
+    Object? extra,
+  }) {
     return RouteMatchList(
       matches: const <RouteMatch>[],
+      extra: extra,
       error: exception,
       uri: uri,
       pathParameters: const <String, String>{},
@@ -277,7 +282,10 @@ class RouteConfiguration {
 
     if (matches == null) {
       return _errorRouteMatchList(
-          uri, GoException('no routes for location: $uri'));
+        uri,
+        GoException('no routes for location: $uri'),
+        extra: extra,
+      );
     }
     return RouteMatchList(
         matches: matches,

packages/go_router/pubspec.yaml

@@ -1,7 +1,7 @@
 name: go_router
 description: A declarative router for Flutter based on Navigation 2 supporting
   deep linking, data-driven routes and more
-version: 11.1.2
+version: 11.1.3
 repository: https://github.com/flutter/packages/tree/main/packages/go_router
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+go_router%22
 

packages/go_router/test/exception_handling_test.dart

@@ -77,6 +77,21 @@ void main() {
       expect(find.text('redirected /some-other-location'), findsOneWidget);
     });
 
+    testWidgets('can redirect with extra', (WidgetTester tester) async {
+      final GoRouter router = await createRouter(<RouteBase>[
+        GoRoute(
+            path: '/error',
+            builder: (_, GoRouterState state) => Text('extra: ${state.extra}')),
+      ], tester,
+          onException: (_, GoRouterState state, GoRouter router) =>
+              router.go('/error', extra: state.extra));
+      expect(find.text('extra: null'), findsOneWidget);
+
+      router.go('/some-other-location', extra: 'X');
+      await tester.pumpAndSettle();
+      expect(find.text('extra: X'), findsOneWidget);
+    });
+
     testWidgets('stays on the same page if noop.', (WidgetTester tester) async {
       final GoRouter router = await createRouter(
         <RouteBase>[