fix: [go_router] Extra parameter is always null in route level redirect callback

packages/go_router/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 4.2.2
+
+- Add test extra parameter
+
 ## 4.2.1
 
 - Refactors internal classes and methods

packages/go_router/lib/src/redirection.dart

@@ -78,6 +78,7 @@ RouteMatchList redirect(RouteMatchList prevMatchList,
         name: top.route.name,
         path: top.route.path,
         fullpath: top.fullpath,
+        extra: top.extra,
         params: top.decodedParams,
         queryParams: top.queryParams,
       ),

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: 4.2.1
+version: 4.2.2
 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/go_router_test.dart

@@ -1170,6 +1170,46 @@ void main() {
           (router.screenFor(matches.first) as TestErrorScreen).ex, isNotNull);
       log.info((router.screenFor(matches.first) as TestErrorScreen).ex);
     });
+
+    testWidgets('extra not null in redirect', (WidgetTester tester) async {
+      final List<GoRoute> routes = <GoRoute>[
+        GoRoute(
+          name: 'home',
+          path: '/',
+          builder: (BuildContext context, GoRouterState state) =>
+              const HomeScreen(),
+          routes: <GoRoute>[
+            GoRoute(
+              name: 'login',
+              path: 'login',
+              builder: (BuildContext context, GoRouterState state) {
+                return const LoginScreen();
+              },
+              redirect: (GoRouterState state) {
+                expect(state.extra, isNotNull);
+                return null;
+              },
+              routes: <GoRoute>[],
+            ),
+          ],
+        ),
+      ];
+
+      final GoRouter router = await createRouter(
+        routes,
+        tester,
+        redirect: (GoRouterState state) {
+          if (state.location == '/login') {
+            expect(state.extra, isNotNull);
+          }
+
+          return null;
+        },
+      );
+
+      router.go('/login', extra: 1);
+      await tester.pump();
+    });
   });
 
   group('initial location', () {