修复用户端令牌失效后的登录恢复

apps/user_app/test/app/auth_navigation_test.dart

@@ -0,0 +1,40 @@
+// 功能描述：验证登录目标页构造、站内地址校验及开放重定向防护。
+// 版本：1.0.0
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/app/auth_navigation.dart';
+
+/// 覆盖合法深链接、鉴权页循环和外部地址攻击场景。
+void main() {
+  test('保留站内目标页的路径、查询参数和片段', () {
+    const target = '/orders?status=pending#payment';
+
+    expect(sanitizeRedirectTarget(target), target);
+    final loginUri = Uri.parse(
+      buildAuthLocation(
+        '/login',
+        redirectTarget: target,
+        sessionExpired: true,
+      ),
+    );
+    expect(loginUri.path, '/login');
+    expect(loginUri.queryParameters['redirect'], target);
+    expect(loginUri.queryParameters['reason'], 'expired');
+  });
+
+  test('拒绝外部地址、协议相对地址和鉴权页循环', () {
+    expect(sanitizeRedirectTarget('https://example.com/orders'), isNull);
+    expect(sanitizeRedirectTarget('//example.com/orders'), isNull);
+    expect(sanitizeRedirectTarget(r'/\example.com/orders'), isNull);
+    expect(sanitizeRedirectTarget('/login'), isNull);
+    expect(sanitizeRedirectTarget('/register?redirect=/orders'), isNull);
+  });
+
+  test('非法目标页不写入登录地址', () {
+    final loginUri = Uri.parse(
+      buildAuthLocation('/login', redirectTarget: 'https://example.com'),
+    );
+
+    expect(loginUri.path, '/login');
+    expect(loginUri.queryParameters, isEmpty);
+  });
+}

apps/user_app/test/app/router_test.dart

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+// 功能描述：验证鉴权守卫保留目标页，并在重新登录后替换返回原页面。
+// 版本：1.0.0
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:http/http.dart' as http;
+import 'package:http/testing.dart';
+import 'package:user_app/app/dependencies.dart';
+import 'package:user_app/app/router.dart';
+import 'package:user_app/data/repositories/client_repository.dart';
+import 'package:user_app/data/services/api_client.dart';
+import 'package:user_app/data/services/secure_session_store.dart';
+
+/// 提供无需平台插件的空会话存储。
+class _EmptySessionStore implements SessionStore {
+  @override
+  Future<void> clear() async {}
+
+  @override
+  Future<String?> readToken() async => null;
+
+  @override
+  Future<void> writeToken(String token) async {}
+}
+
+/// 提供可切换鉴权状态的测试会话。
+class _RouterTestSession extends UserSession {
+  _RouterTestSession({required this.authenticated, required this.expired})
+    : super(_EmptySessionStore());
+
+  bool authenticated;
+  bool expired;
+
+  @override
+  bool get isAuthenticated => authenticated;
+
+  @override
+  bool get hasExpired => expired;
+
+  /// 模拟用户重新登录成功并唤醒路由刷新。
+  void authenticate() {
+    authenticated = true;
+    expired = false;
+    notifyListeners();
+  }
+}
+
+/// 覆盖过期提示、查询参数保留和登录后回跳。
+void main() {
+  testWidgets('令牌失效后跳转登录并在登录后返回原目标页', (tester) async {
+    final session = _RouterTestSession(authenticated: false, expired: true);
+    final dependencies = AppDependencies(
+      session: session,
+      repository: ClientRepository(
+        ApiClient(
+          () => '',
+          baseUrl: 'https://api.example.com',
+          client: MockClient(
+            (request) async => http.Response('{"code":0,"details":[]}', 200),
+          ),
+        ),
+      ),
+    );
+    final router = createRouter(
+      dependencies,
+      initialLocation: '/orders?status=pending',
+    );
+    addTearDown(router.dispose);
+
+    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
+    await tester.pumpAndSettle();
+
+    final loginUri = router.routeInformationProvider.value.uri;
+    expect(loginUri.path, '/login');
+    expect(loginUri.queryParameters['redirect'], '/orders?status=pending');
+    expect(loginUri.queryParameters['reason'], 'expired');
+    expect(find.text('登录状态已失效，请重新登录'), findsOneWidget);
+
+    session.authenticate();
+    await tester.pumpAndSettle();
+
+    expect(router.routeInformationProvider.value.uri.path, '/orders');
+    expect(
+      router.routeInformationProvider.value.uri.queryParameters['status'],
+      'pending',
+    );
+  });
+}

apps/user_app/test/app/user_session_test.dart

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+// 功能描述：验证会话失效的幂等清理、旧请求隔离和存储异常降级。
+// 版本：1.0.0
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/app/dependencies.dart';
+import 'package:user_app/data/services/secure_session_store.dart';
+
+/// 提供可观测的内存令牌存储，避免测试依赖真实平台插件。
+class _MemorySessionStore implements SessionStore {
+  _MemorySessionStore({this.token, this.clearError});
+
+  String? token;
+  final Object? clearError;
+  int clearCount = 0;
+
+  @override
+  Future<void> clear() async {
+    clearCount++;
+    if (clearError != null) throw clearError!;
+    token = null;
+  }
+
+  @override
+  Future<String?> readToken() async => token;
+
+  @override
+  Future<void> writeToken(String token) async {
+    this.token = token;
+  }
+}
+
+/// 覆盖并发 401、迟到的旧请求和安全存储删除失败场景。
+void main() {
+  test('同一失效令牌只清理并通知一次', () async {
+    final store = _MemorySessionStore(token: 'JWT expired-token');
+    final session = UserSession(store);
+    await session.restore();
+    var notificationCount = 0;
+    session.addListener(() => notificationCount++);
+
+    session.invalidate('JWT expired-token');
+    session.invalidate('JWT expired-token');
+    await Future<void>.delayed(Duration.zero);
+
+    expect(session.token, isEmpty);
+    expect(session.hasExpired, isTrue);
+    expect(store.clearCount, 1);
+    expect(notificationCount, 1);
+  });
+
+  test('迟到的旧请求不得使当前令牌失效', () async {
+    final store = _MemorySessionStore(token: 'JWT current-token');
+    final session = UserSession(store);
+    await session.restore();
+
+    session.invalidate('JWT old-token');
+    await Future<void>.delayed(Duration.zero);
+
+    expect(session.token, 'JWT current-token');
+    expect(session.hasExpired, isFalse);
+    expect(store.clearCount, 0);
+  });
+
+  test('持久化删除失败也立即清空内存登录态', () async {
+    final store = _MemorySessionStore(
+      token: 'JWT expired-token',
+      clearError: StateError('storage unavailable'),
+    );
+    final session = UserSession(store);
+    await session.restore();
+
+    session.invalidate('JWT expired-token');
+    await Future<void>.delayed(Duration.zero);
+
+    expect(session.token, isEmpty);
+    expect(session.hasExpired, isTrue);
+    expect(store.clearCount, 1);
+  });
+}