feat(recommend): 上新板块改按后端语义码判断，顶部轮播改为无缝循环

Drama 新增 tagCode，推荐页只看 NEW_ARRIVAL 这个码决定上新横滑，
不再依赖可变的标签文案；分类网格高度改为复用卡片的统一常量。
头部轮播改用虚拟无限页码，首尾相接且能反向滑，自动播放不再倒滑回第一张。

lib/core/data/models/drama.dart

@@ -102,6 +102,7 @@ class Drama {
     this.synopsisLocales = const {},
     this.tag = '',
     this.tagLocales = const {},
+    this.tagCode = '',
     this.tagColor = '',
     this.category = '',
     this.categoryLocales = const {},
@@ -127,6 +128,9 @@ class Drama {
   final Map<String, String> synopsisLocales;
   final String tag;
   final Map<String, String> tagLocales;
+
+  /// 标签语义码（如 `NEW_ARRIVAL`）。文案会随语言变，语义判断只认这个码。
+  final String tagCode;
   final String tagColor;
   final String posterUrl;
   final List<Episode> episodes;
@@ -172,6 +176,7 @@ class Drama {
       synopsisLocales: text.synopsisLocales,
       tag: text.tag,
       tagLocales: text.tagLocales,
+      tagCode: (json['tagCode'] as String? ?? '').trim(),
       tagColor: json['tagColor'] as String? ?? '',
       posterUrl: json['cover'] as String? ?? '',
       episodes: preview is Map<String, dynamic>
@@ -204,6 +209,7 @@ class Drama {
       synopsisLocales: text.synopsisLocales,
       tag: text.tag,
       tagLocales: text.tagLocales,
+      tagCode: (json['tagCode'] as String? ?? '').trim(),
       tagColor: json['tagColor'] as String? ?? '',
       posterUrl: json['cover'] as String? ?? '',
       category: text.category,
@@ -315,7 +321,10 @@ class _DramaText {
     final category = _firstText(categoryLocales, json['category'], types);
     return _DramaText(
       title: _firstText(titleLocales, json['title']),
-      synopsis: _firstText(synopsisLocales, json['synopsis'] ?? json['description']),
+      synopsis: _firstText(
+        synopsisLocales,
+        json['synopsis'] ?? json['description'],
+      ),
       titleLocales: titleLocales,
       synopsisLocales: synopsisLocales,
       tag: _firstText(tagLocales, json['tag']),
@@ -328,7 +337,11 @@ class _DramaText {
   }
 }
 
-String _firstText(Map<String, String> locales, Object? fallback, [List<Map<String, String>>? types]) {
+String _firstText(
+  Map<String, String> locales,
+  Object? fallback, [
+  List<Map<String, String>>? types,
+]) {
   final chinese = locales['zh'] ?? '';
   if (chinese.isNotEmpty) return chinese;
   if (types != null && types.isNotEmpty) {
@@ -339,7 +352,9 @@ String _firstText(Map<String, String> locales, Object? fallback, [List<Map<Strin
 }
 
 String _genreText(List<Map<String, String>> types, Object? fallback) {
-  final names = types.map((item) => item['zh'] ?? '').where((value) => value.isNotEmpty);
+  final names = types
+      .map((item) => item['zh'] ?? '')
+      .where((value) => value.isNotEmpty);
   final joined = names.join(' / ');
   if (joined.isNotEmpty) return joined;
   return fallback is String ? fallback : '';

lib/pages/recommend/recommend_discover_page.dart

@@ -138,8 +138,7 @@ class _RecommendDiscoverPageState extends State<RecommendDiscoverPage>
     }
   }
 
-  Future<void> _openDrama(Drama drama) =>
+  Future<void> _openDrama(Drama drama) => playDramaFromCatalog(context, drama);
-      playDramaFromCatalog(context, drama);
 
   @override
   Widget build(BuildContext context) {
@@ -163,9 +162,7 @@ class _RecommendDiscoverPageState extends State<RecommendDiscoverPage>
           Positioned.fill(
             child: categoryList.isEmpty
                 ? const Center(
-                    child: CircularProgressIndicator(
+                    child: CircularProgressIndicator(color: AppColors.brandRed),
-                      color: AppColors.brandRed,
-                    ),
                   )
                 : PageView.builder(
                     key: const Key('recommend-channel-pager'),
@@ -184,7 +181,8 @@ class _RecommendDiscoverPageState extends State<RecommendDiscoverPage>
                         carouselActive: widget.active && index == selectedIndex,
                         mediaTop: mediaTop,
                         onRequest: _ensureCategory,
-                        onRefresh: () => _refreshCategory(category.id, index == 0),
+                        onRefresh: () =>
+                            _refreshCategory(category.id, index == 0),
                         onOpenDrama: _openDrama,
                       );
                     },
@@ -294,11 +292,7 @@ class _ChannelFeedState extends State<_ChannelFeed>
     List<Drama> newArrivals = const [];
     List<Drama> rest = dramas;
     if (widget.isFeatured && dramas.isNotEmpty) {
-      final lang = Localizations.localeOf(context).languageCode;
+      newArrivals = dramas.where(isNewArrivalTag).toList(growable: false);
-      final badge = AppLocalizations.of(context)!.newArrivalBadge;
-      newArrivals = dramas
-          .where((drama) => _isNewArrivalTag(drama, lang, badge))
-          .toList(growable: false);
       if (newArrivals.isNotEmpty) {
         final newIds = newArrivals.map((drama) => drama.id).toSet();
         rest = dramas
@@ -326,7 +320,9 @@ class _ChannelFeedState extends State<_ChannelFeed>
           hasScrollBody: false,
           child: Padding(
             padding: EdgeInsets.only(
-              top: showCarousel ? 0 : widget.mediaTop + RecommendChannelNav.height,
+              top: showCarousel
+                  ? 0
+                  : widget.mediaTop + RecommendChannelNav.height,
             ),
             child: Center(child: _placeholder(slot.loading)),
           ),
@@ -334,12 +330,11 @@ class _ChannelFeedState extends State<_ChannelFeed>
       );
     } else if (widget.isFeatured) {
       // 无轮播图时内容需避开顶部悬浮导航。
-      final contentTop =
+      final contentTop = showCarousel
-          showCarousel ? 24.0 : widget.mediaTop + RecommendChannelNav.height + 16;
+          ? 24.0
+          : widget.mediaTop + RecommendChannelNav.height + 16;
       if (newArrivals.isNotEmpty) {
-        sliverList.add(
+        sliverList.add(SliverToBoxAdapter(child: SizedBox(height: contentTop)));
-          SliverToBoxAdapter(child: SizedBox(height: contentTop)),
-        );
         sliverList.add(
           SliverToBoxAdapter(
             child: HomeNewArrivalRow(
@@ -348,9 +343,7 @@ class _ChannelFeedState extends State<_ChannelFeed>
             ),
           ),
         );
-        sliverList.add(
+        sliverList.add(const SliverToBoxAdapter(child: SizedBox(height: 28)));
-          const SliverToBoxAdapter(child: SizedBox(height: 28)),
-        );
       }
       sliverList.add(
         _gridSliver(
@@ -363,7 +356,9 @@ class _ChannelFeedState extends State<_ChannelFeed>
       sliverList.add(
         _gridSliver(
           dramas,
-          topPadding: showCarousel ? 20 : widget.mediaTop + RecommendChannelNav.height + 16,
+          topPadding: showCarousel
+              ? 20
+              : widget.mediaTop + RecommendChannelNav.height + 16,
           crossAxisCount: 3,
         ),
       );
@@ -427,7 +422,6 @@ class _ChannelFeedState extends State<_ChannelFeed>
     const pageSide = 14.0;
     const cardGap = 9.0;
     const rowGap = 16.0;
-    const cardBodyExtent = 44.0; // 封面下间距 + 剧名行 + 集数行
     // 两列时卡更大，卡间距略放宽。
     final spacing = crossAxisCount == 2 ? 12.0 : cardGap;
     return SliverPadding(
@@ -437,7 +431,7 @@ class _ChannelFeedState extends State<_ChannelFeed>
           final itemWidth =
               (constraints.crossAxisExtent - spacing * (crossAxisCount - 1)) /
               crossAxisCount;
-          final itemExtent = itemWidth * 157 / 110 + cardBodyExtent;
+          final itemExtent = itemWidth * 157 / 110 + homePosterCardBodyExtent;
           return SliverGrid(
             key: Key('recommend-category-grid-${widget.categoryId}'),
             gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
@@ -446,17 +440,14 @@ class _ChannelFeedState extends State<_ChannelFeed>
               mainAxisSpacing: rowGap,
               mainAxisExtent: itemExtent,
             ),
-            delegate: SliverChildBuilderDelegate(
+            delegate: SliverChildBuilderDelegate((context, index) {
-              (context, index) {
+              final drama = dramas[index];
-                final drama = dramas[index];
+              return HomePosterCard(
-                return HomePosterCard(
+                key: Key('recommend-category-card-${drama.id}'),
-                  key: Key('recommend-category-card-${drama.id}'),
+                drama: drama,
-                  drama: drama,
+                onTap: () => widget.onOpenDrama(drama),
-                  onTap: () => widget.onOpenDrama(drama),
+              );
-                );
+            }, childCount: dramas.length),
-              },
-              childCount: dramas.length,
-            ),
           );
         },
       ),
@@ -464,14 +455,11 @@ class _ChannelFeedState extends State<_ChannelFeed>
   }
 }
 
-/// 判定接口下发的短剧标签是否为「上新」。
+/// 「上新」标签语义码，对应后台 content_tag.code。
+const String newArrivalTagCode = 'NEW_ARRIVAL';
+
+/// 判定短剧是否属于「上新」板块。
 ///
-/// 完全以后端返回的 `tag` / `tagLocales`（经 [Drama.localizedTag] 本地化）
+/// 只看语义码：码由后台标签管理配置，文案怎么改、切什么语言都不影响。
-/// 为准；兼容「上新 / NEW / BARU」三种文案，并兼容「本周上新」这类带前后缀的写法。
+bool isNewArrivalTag(Drama drama) =>
-bool _isNewArrivalTag(Drama drama, String lang, String localizedBadge) {
+    drama.tagCode.trim().toUpperCase() == newArrivalTagCode;
-  final tag = drama.localizedTag(lang).trim();
-  if (tag.isEmpty) return false;
-  if (tag == localizedBadge) return true;
-  final lower = tag.toLowerCase();
-  return tag.contains('上新') || lower == 'new' || lower == 'baru';
-}

lib/pages/recommend/widgets/home_hero_carousel.dart

@@ -46,15 +46,25 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
   static const double _dotGap = 9;
   static const double _ctaHeight = 38;
 
-  final PageController _controller = PageController();
+  /// 无限轮播：PageView 用虚拟大页码，取模映射到真实 banner，首尾天然相接。
+  static const int _basePage = 1000;
+
+  late final PageController _controller;
   Timer? _timer;
+  int _page = 0;
   int _index = 0;
   bool _pressed = false;
   bool _tickerEnabled = true;
 
+  /// 起始页码取 banner 数量的大倍数，向左右滑都不会到头。
+  static int _initialPageOf(int bannerCount) =>
+      bannerCount > 1 ? bannerCount * _basePage : 0;
+
   @override
   void initState() {
     super.initState();
+    _page = _initialPageOf(widget.banners.length);
+    _controller = PageController(initialPage: _page);
     WidgetsBinding.instance.addPostFrameCallback((_) => _syncTimer());
   }
 
@@ -72,8 +82,11 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
   void didUpdateWidget(covariant HomeHeroCarousel oldWidget) {
     super.didUpdateWidget(oldWidget);
     if (oldWidget.banners.length != widget.banners.length) {
-      if (_index >= widget.banners.length) _index = 0;
+      // 首屏 banner 是异步到的：列表从空变有之后要把页码挪到虚拟起点，
-      _syncTimer();
+      // 否则左滑第一下就到头了。
+      _page = _initialPageOf(widget.banners.length);
+      _index = 0;
+      _jumpToBasePage();
     }
     if (oldWidget.banners.length != widget.banners.length ||
         oldWidget.active != widget.active) {
@@ -91,7 +104,8 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
   void _syncTimer() {
     _timer?.cancel();
     _timer = null;
-    final canAdvance = mounted &&
+    final canAdvance =
+        mounted &&
         widget.active &&
         _tickerEnabled &&
         !_pressed &&
@@ -102,12 +116,16 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
 
   void _advance() {
     if (!_controller.hasClients || widget.banners.length < 2) return;
-    final next = (_index + 1) % widget.banners.length;
+    // 虚拟页码无限，直接翻下一页即可，不用在末尾跳回第 0 页。
-    _controller.animateToPage(
+    _controller.nextPage(duration: _pageDuration, curve: Curves.easeOutCubic);
-      next,
+  }
-      duration: _pageDuration,
+
-      curve: Curves.easeOutCubic,
+  /// 把 PageView 静默挪到虚拟起点：视觉上是同一张图，不会闪。
-    );
+  void _jumpToBasePage() {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted || !_controller.hasClients) return;
+      if (_controller.page?.round() != _page) _controller.jumpToPage(_page);
+    });
   }
 
   @override
@@ -134,9 +152,17 @@ class _HomeHeroCarouselState extends State<HomeHeroCarousel> {
           children: [
             PageView.builder(
               controller: _controller,
-              itemCount: widget.banners.length,
+              // 数量大于 1 时用无限页码做无缝循环，取模映射到真实 banner。
-              onPageChanged: (value) => setState(() => _index = value),
+              itemCount: widget.banners.length > 1
-              itemBuilder: (context, index) => _bannerPage(context, index),
+                  ? null
+                  : widget.banners.length,
+              onPageChanged: (value) => setState(() {
+                _page = value;
+                final count = widget.banners.length;
+                _index = count == 0 ? 0 : value % count;
+              }),
+              itemBuilder: (context, page) =>
+                  _bannerPage(context, page % widget.banners.length),
             ),
             Positioned(left: 0, right: 0, bottom: 14, child: _dots(context)),
           ],
@@ -288,16 +314,18 @@ class _HeroCopy extends StatelessWidget {
             color: AppColors.textPrimary.withValues(alpha: 0.95),
             fontSize: 15,
             fontWeight: FontWeight.w400,
-            shadows: const [
+            shadows: const [Shadow(color: Color(0x80000000), blurRadius: 8)],
-              Shadow(color: Color(0x80000000), blurRadius: 8),
-            ],
           ),
         ),
         const SizedBox(height: 20),
         Row(
           mainAxisSize: MainAxisSize.min,
           children: [
-            _WatchButton(height: ctaHeight, label: l10n.watchNowAction, onTap: onWatch),
+            _WatchButton(
+              height: ctaHeight,
+              label: l10n.watchNowAction,
+              onTap: onWatch,
+            ),
             const SizedBox(width: 12),
             _FavoriteCircle(size: ctaHeight, drama: drama),
           ],

test/recommend/home_hero_carousel_test.dart

@@ -0,0 +1,83 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/home_feed.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/widgets/home_hero_carousel.dart';
+
+const List<FeedBanner> _banners = [
+  FeedBanner(id: '1', imageUrl: 'https://cdn.test/a.png'),
+  FeedBanner(id: '2', imageUrl: 'https://cdn.test/b.png'),
+];
+
+Widget _harness(List<FeedBanner> banners) {
+  return MaterialApp(
+    locale: const Locale('en'),
+    supportedLocales: AppLocalizations.supportedLocales,
+    localizationsDelegates: AppLocalizations.localizationsDelegates,
+    home: Scaffold(
+      body: HomeHeroCarousel(
+        banners: banners,
+        dramaFor: (_) => null,
+        onWatch: (_) {},
+      ),
+    ),
+  );
+}
+
+Color? _dotColor(WidgetTester tester, int index) {
+  final decoration =
+      tester
+              .widget<Container>(find.byKey(Key('home-hero-dot-$index')))
+              .decoration
+          as BoxDecoration?;
+  return decoration?.color;
+}
+
+void main() {
+  testWidgets('should_keep_looping_backwards_from_the_first_banner', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_harness(_banners));
+    await tester.pumpAndSettle();
+
+    expect(_dotColor(tester, 0), AppColors.brandRed);
+
+    // 从第一张往右滑：无缝轮播应该接到最后一张，而不是被边界挡住。
+    await tester.fling(find.byType(PageView), const Offset(700, 0), 1200);
+    await tester.pumpAndSettle();
+
+    expect(_dotColor(tester, 1), AppColors.brandRed);
+    expect(_dotColor(tester, 0), isNot(AppColors.brandRed));
+  });
+
+  testWidgets('should_wrap_to_first_banner_after_last_auto_advance', (
+    tester,
+  ) async {
+    await tester.pumpWidget(_harness(_banners));
+    await tester.pumpAndSettle();
+
+    // 自动播两次：第 2 张之后应回到第 1 张，且页码继续往前走不回头。
+    await tester.pump(const Duration(milliseconds: 4600));
+    await tester.pumpAndSettle();
+    expect(_dotColor(tester, 1), AppColors.brandRed);
+
+    await tester.pump(const Duration(milliseconds: 4600));
+    await tester.pumpAndSettle();
+    expect(_dotColor(tester, 0), AppColors.brandRed);
+  });
+
+  testWidgets('should_not_loop_when_only_one_banner', (tester) async {
+    await tester.pumpWidget(
+      _harness(const [FeedBanner(id: '1', imageUrl: 'https://cdn.test/a.png')]),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.byKey(const Key('home-hero-dot-0')), findsNothing);
+    await tester.pump(const Duration(milliseconds: 6000));
+    await tester.pumpAndSettle();
+    expect(tester.takeException(), isNull);
+  });
+}

test/recommend/recommend_sections_test.dart

@@ -3,6 +3,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:fruitshorts/app.dart';
+import 'package:fruitshorts/core/data/models/drama.dart';
 import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
 import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
 import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
@@ -10,6 +11,7 @@ import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/core/theme/app_dimens.dart';
 import 'package:fruitshorts/core/widgets/app_bottom_nav.dart';
 import 'package:fruitshorts/pages/player/player_view.dart';
+import 'package:fruitshorts/pages/recommend/recommend_discover_page.dart';
 import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
 import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';
 
@@ -34,7 +36,10 @@ void main() {
     expect(find.byKey(const Key('recommend-tab-recommend')), findsOneWidget);
     expect(find.byKey(const Key('recommend-tab-playlist')), findsOneWidget);
     expect(find.byKey(const Key('recommend-tab-all')), findsOneWidget);
-    expect(find.byKey(const Key('recommend-feed-player'), skipOffstage: false), findsOneWidget);
+    expect(
+      find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+      findsOneWidget,
+    );
     expect(find.byKey(const Key('recommend-top-gradient')), findsOneWidget);
     final recommendText = tester.widget<Text>(
       find.descendant(
@@ -65,7 +70,9 @@ void main() {
       find.byKey(const Key('recommend-top-nav')),
     );
     // 右侧依次是搜索和金色礼物盒（钱包入口），礼物盒贴右边距 8。
-    final searchRect = tester.getRect(find.byKey(const Key('recommend-search')));
+    final searchRect = tester.getRect(
+      find.byKey(const Key('recommend-search')),
+    );
     final giftRect = tester.getRect(find.byKey(const Key('recommend-gift')));
     expect(giftRect.right, closeTo(topNavRect.right - 8, 0.1));
     expect(searchRect.right, lessThanOrEqualTo(giftRect.left));
@@ -78,7 +85,12 @@ void main() {
       tester
           .getRect(find.byKey(const Key('recommend-top-nav')))
           .overlaps(
-            tester.getRect(find.byKey(const Key('recommend-feed-player'), skipOffstage: false)),
+            tester.getRect(
+              find.byKey(
+                const Key('recommend-feed-player'),
+                skipOffstage: false,
+              ),
+            ),
           ),
       isTrue,
     );
@@ -387,7 +399,10 @@ void main() {
       tester.getRect(find.byKey(const Key('all-dramas-filters'))).top,
       closeTo(fixedFilterTop, 0.1),
     );
-    expect(find.byKey(const Key('all-filter-classification-all')), findsOneWidget);
+    expect(
+      find.byKey(const Key('all-filter-classification-all')),
+      findsOneWidget,
+    );
     expect(find.byKey(const Key('all-filter-category-all')), findsOneWidget);
     expect(find.byKey(const Key('all-filter-tag-all')), findsOneWidget);
     expect(
@@ -407,7 +422,10 @@ void main() {
     await tester.tap(find.byKey(const Key('recommend-tab-playlist')));
     await tester.pumpAndSettle();
     expect(find.byKey(const Key('recommend-section-hits')), findsOneWidget);
-    expect(find.byKey(const Key('recommend-feed-player'), skipOffstage: false), findsOneWidget);
+    expect(
+      find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+      findsOneWidget,
+    );
     expect(find.byType(AppBottomNav), findsOneWidget);
 
     await tester.ensureVisible(find.byKey(const Key('recommend-tab-all')));
@@ -430,7 +448,10 @@ void main() {
     await tester.drag(pages, const Offset(-320, 0));
     await tester.pumpAndSettle();
     expect(find.byKey(const Key('recommend-section-hits')), findsOneWidget);
-    expect(find.byKey(const Key('recommend-feed-player'), skipOffstage: false), findsOneWidget);
+    expect(
+      find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+      findsOneWidget,
+    );
     expect(
       tester
           .widget<Text>(
@@ -454,7 +475,10 @@ void main() {
 
     await tester.drag(pages, const Offset(640, 0));
     await tester.pumpAndSettle();
-    expect(find.byKey(const Key('recommend-feed-player'), skipOffstage: false), findsOneWidget);
+    expect(
+      find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+      findsOneWidget,
+    );
     expect(find.byKey(const Key('recommend-tab-recommend')), findsOneWidget);
     _drainOverflows(tester);
   });
@@ -497,7 +521,9 @@ void main() {
     await _pumpRecommend(tester);
 
     final gesture = await tester.startGesture(
-      tester.getCenter(find.byKey(const Key('recommend-feed-player'), skipOffstage: false)),
+      tester.getCenter(
+        find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+      ),
     );
     await gesture.moveBy(const Offset(0, 80));
     await tester.pump();
@@ -505,7 +531,10 @@ void main() {
     final feedScroll = tester.state<ScrollableState>(
       find
           .descendant(
-            of: find.byKey(const Key('recommend-feed-player'), skipOffstage: false),
+            of: find.byKey(
+              const Key('recommend-feed-player'),
+              skipOffstage: false,
+            ),
             matching: find.byType(Scrollable),
           )
           .first,
@@ -544,6 +573,25 @@ void main() {
     expect(search.focusNode?.hasFocus, isTrue);
     _drainOverflows(tester);
   });
+
+  test('should_judge_new_arrival_only_by_tag_code', () {
+    Drama tagged({String tagCode = '', String tag = ''}) => Drama(
+      id: 'tagged',
+      title: 'Tagged',
+      synopsis: 'synopsis',
+      posterUrl: '',
+      tag: tag,
+      tagCode: tagCode,
+    );
+
+    expect(isNewArrivalTag(tagged(tagCode: 'NEW_ARRIVAL')), isTrue);
+    expect(isNewArrivalTag(tagged(tagCode: ' new_arrival ')), isTrue);
+    // 其它语义码（以及没有码的标签）都不算上新，文案不参与判断。
+    expect(isNewArrivalTag(tagged(tagCode: 'HOT')), isFalse);
+    expect(isNewArrivalTag(tagged(tagCode: 'NEW_RELEASE')), isFalse);
+    expect(isNewArrivalTag(tagged(tag: '上新')), isFalse);
+    expect(isNewArrivalTag(tagged()), isFalse);
+  });
 }
 
 /// 测试字体（等宽方块字形）比真实字体宽/高，卡片固定高度会报 2~4px