feat(ui): 更新品牌启动页与选集交互

test/splash/splash_gate_test.dart

@@ -0,0 +1,59 @@
+// Author: fruit.com.cn
+
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/drama.dart';
+import 'package:fruitshorts/core/data/models/home_feed.dart';
+import 'package:fruitshorts/core/data/repositories/catalog_repository.dart';
+import 'package:fruitshorts/core/data/services/catalog_controller.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/home/home_view.dart';
+import 'package:provider/provider.dart';
+
+void main() {
+  testWidgets(
+    'should_keep_splash_with_loading_until_home_feed_settles',
+    (tester) async {
+      final repository = _PendingCatalog();
+      await tester.pumpWidget(
+        MaterialApp(
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: ChangeNotifierProvider(
+            create: (_) => CatalogController(repository)..load(),
+            child: const HomePage(),
+          ),
+        ),
+      );
+
+      expect(find.byKey(const Key('splash-screen')), findsOneWidget);
+      expect(find.byKey(const Key('splash-loading')), findsOneWidget);
+      expect(find.byKey(const Key('home-empty')), findsNothing);
+      final clip = tester.widget<ClipRRect>(find.byType(ClipRRect));
+      expect(clip.borderRadius, BorderRadius.circular(18));
+
+      repository.pending.complete(const HomeFeed());
+      await tester.pump();
+      await tester.pump();
+
+      expect(find.byKey(const Key('splash-screen')), findsNothing);
+      expect(find.byKey(const Key('home-empty')), findsOneWidget);
+    },
+  );
+}
+
+class _PendingCatalog implements CatalogRepository {
+  final Completer<HomeFeed> pending = Completer<HomeFeed>();
+
+  @override
+  Future<HomeFeed> fetchHomeFeed() => pending.future;
+
+  @override
+  Future<HomeFeed> fetchDiscoverFeed() => pending.future;
+
+  @override
+  Future<Drama> fetchDrama(String dramaId) =>
+      Future<Drama>.error(StateError('unused'));
+}