feat(flutter): 增加轮播自动播放与站内通知

test/notice/notices_controller_test.dart

@@ -0,0 +1,95 @@
+// Author: fruit.com.cn
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/notice.dart';
+import 'package:fruitshorts/core/data/remote/api_client.dart';
+import 'package:fruitshorts/core/data/repositories/notice_repository.dart';
+import 'package:fruitshorts/core/data/services/notices_controller.dart';
+
+void main() {
+  test('should_append_next_page_until_loaded_count_reaches_total', () async {
+    final repository = ScriptedNoticeRepository([
+      NoticePage(total: 3, notices: [_notice('1'), _notice('2')]),
+      NoticePage(total: 3, notices: [_notice('3')]),
+    ]);
+    final controller = NoticesController(repository);
+
+    await controller.load();
+    expect(controller.notices.map((item) => item.id), ['1', '2']);
+    expect(controller.hasMore, isTrue);
+
+    await controller.loadMore();
+    expect(controller.notices.map((item) => item.id), ['1', '2', '3']);
+    expect(controller.hasMore, isFalse);
+    expect(repository.calls.map((call) => call.pageIndex), [1, 2]);
+  });
+
+  test('should_show_empty_state_when_total_is_zero', () async {
+    final controller = NoticesController(
+      ScriptedNoticeRepository([const NoticePage(total: 0)]),
+    );
+
+    await controller.load();
+
+    expect(controller.loading, isFalse);
+    expect(controller.notices, isEmpty);
+    expect(controller.hasMore, isFalse);
+    expect(controller.error, isNull);
+  });
+
+  test('should_preserve_backend_message_when_page_load_fails', () async {
+    final repository = ScriptedNoticeRepository([])
+      ..error = const ApiException(500, '公告服务暂不可用');
+    final controller = NoticesController(repository);
+
+    await controller.load();
+
+    expect(controller.error, '公告服务暂不可用');
+    expect(controller.notices, isEmpty);
+  });
+
+  test('should_replace_list_when_refreshed', () async {
+    final repository = ScriptedNoticeRepository([
+      NoticePage(total: 2, notices: [_notice('1'), _notice('2')]),
+      NoticePage(total: 1, notices: [_notice('9')]),
+    ]);
+    final controller = NoticesController(repository);
+    await controller.load();
+
+    await controller.refresh();
+
+    expect(controller.notices.map((item) => item.id), ['9']);
+    expect(controller.hasMore, isFalse);
+  });
+}
+
+AppNotice _notice(String id) => AppNotice(
+  id: id,
+  title: 'Notice $id',
+  content: 'Content $id',
+  type: 'SYSTEM',
+  publishAt: DateTime(2026, 10, 17, 12),
+);
+
+class ScriptedNoticeRepository implements NoticeRepository {
+  ScriptedNoticeRepository(this.pages);
+
+  final List<NoticePage> pages;
+  final List<NoticePageCall> calls = [];
+  Object? error;
+
+  @override
+  Future<NoticePage> page({required int pageIndex, int pageSize = 20}) async {
+    calls.add(NoticePageCall(pageIndex: pageIndex, pageSize: pageSize));
+    if (error != null) throw error!;
+    if (pages.isEmpty) return const NoticePage(total: 0);
+    return pages.removeAt(0);
+  }
+}
+
+class NoticePageCall {
+  const NoticePageCall({required this.pageIndex, required this.pageSize});
+
+  final int pageIndex;
+  final int pageSize;
+}