feat(flutter): 增加榜单新剧分页与预约刷新

test/discover/theater_pages_test.dart

@@ -4,6 +4,7 @@ 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/models/home_feed.dart';
 import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
 import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
@@ -172,14 +173,119 @@ void main() {
     expect(find.byKey(const Key('ranking-page')), findsNothing);
     expect(find.byKey(const Key('discover-search')), findsOneWidget);
   });
+
+  testWidgets('should_page_ranking_and_reset_after_refresh', (tester) async {
+    final repository = _CountingCatalogRepository(dramas: _rankDramas(40));
+    await _pumpTheater(tester, catalogRepository: repository);
+    await tester.tap(find.byKey(const Key('theater-toolbar-ranking')));
+    await tester.pumpAndSettle();
+
+    final list = find.byKey(const Key('ranking-list'));
+    await tester.drag(list, const Offset(0, -8000));
+    await tester.pump();
+
+    expect(find.byKey(const Key('ranking-row-19')), findsOneWidget);
+    expect(find.byKey(const Key('ranking-row-20')), findsNothing);
+    expect(find.byKey(const Key('ranking-load-more')), findsOneWidget);
+    await tester.pump(const Duration(milliseconds: 299));
+    expect(find.byKey(const Key('ranking-load-more')), findsOneWidget);
+    await tester.pump(const Duration(milliseconds: 1));
+
+    await tester.drag(list, const Offset(0, -8000));
+    await tester.pump();
+    expect(find.byKey(const Key('ranking-row-39')), findsOneWidget);
+    expect(find.byKey(const Key('ranking-row-40')), findsNothing);
+    expect(find.byKey(const Key('ranking-no-more')), findsOneWidget);
+
+    final position = _scrollPosition(tester, const Key('ranking-list'));
+    position.jumpTo(0);
+    await tester.pump();
+    final beforeRefresh = repository.fetchCalls;
+    await tester.drag(list, const Offset(0, 120));
+    await tester.pump();
+    await tester.pumpAndSettle();
+
+    expect(repository.fetchCalls, beforeRefresh + 1);
+    expect(position.pixels, 0);
+    await tester.drag(list, const Offset(0, -8000));
+    await tester.pump();
+    expect(find.byKey(const Key('ranking-load-more')), findsOneWidget);
+    expect(find.byKey(const Key('ranking-no-more')), findsNothing);
+    await tester.pumpAndSettle();
+  });
+
+  testWidgets('should_page_new_releases_and_reset_after_refresh', (
+    tester,
+  ) async {
+    final repository = _CountingCatalogRepository(dramas: _rankDramas(40));
+    await _pumpTheater(tester, catalogRepository: repository);
+    await tester.tap(find.byKey(const Key('theater-toolbar-new')));
+    await tester.pumpAndSettle();
+
+    final list = find.byKey(const Key('new-releases-list'));
+    await tester.drag(list, const Offset(0, -400));
+    await tester.pump();
+    expect(_countKeys('home-drama-card-'), 20);
+
+    await tester.drag(list, const Offset(0, -8000));
+    await tester.pump();
+    expect(find.byKey(const Key('new-releases-load-more')), findsOneWidget);
+    await tester.pump(const Duration(milliseconds: 299));
+    expect(_countKeys('home-drama-card-'), 20);
+    await tester.pump(const Duration(milliseconds: 1));
+    await tester.pump();
+    expect(_countKeys('home-drama-card-'), 40);
+
+    await tester.pumpAndSettle();
+    final position = _scrollPosition(tester, const Key('new-releases-list'));
+    position.jumpTo(position.maxScrollExtent);
+    await tester.pumpAndSettle();
+    expect(find.byKey(const Key('new-releases-no-more')), findsOneWidget);
+
+    position.jumpTo(0);
+    await tester.pump();
+    final beforeRefresh = repository.fetchCalls;
+    await tester.drag(list, const Offset(0, 120));
+    await tester.pump();
+    await tester.pumpAndSettle();
+    expect(repository.fetchCalls, beforeRefresh + 1);
+    expect(position.pixels, 0);
+
+    await tester.drag(list, const Offset(0, -400));
+    await tester.pump();
+    expect(_countKeys('home-drama-card-'), 20);
+  });
+
+  testWidgets('should_refresh_reserve_without_load_more', (tester) async {
+    final repository = _CountingCatalogRepository(dramas: _rankDramas(3));
+    await _pumpTheater(tester, catalogRepository: repository);
+    await tester.tap(find.byKey(const Key('theater-toolbar-reserve')));
+    await tester.pumpAndSettle();
+
+    final beforeRefresh = repository.fetchCalls;
+    await tester.drag(
+      find.byKey(const Key('reserve-list')),
+      const Offset(0, 120),
+    );
+    await tester.pump();
+    await tester.pumpAndSettle();
+
+    expect(repository.fetchCalls, beforeRefresh + 1);
+    expect(find.byKey(const Key('reserve-load-more')), findsNothing);
+    expect(find.byKey(const Key('reserve-no-more')), findsNothing);
+  });
 }
 
-Future<void> _pumpTheater(WidgetTester tester, {List<Drama>? dramas}) async {
+Future<void> _pumpTheater(
+  WidgetTester tester, {
+  List<Drama>? dramas,
+  FakeCatalogRepository? catalogRepository,
+}) async {
   tester.view.physicalSize = const Size(390, 844);
   tester.view.devicePixelRatio = 1;
   addTearDown(tester.view.resetPhysicalSize);
   addTearDown(tester.view.resetDevicePixelRatio);
-  final catalog = FakeCatalogRepository(dramas: dramas);
+  final catalog = catalogRepository ?? FakeCatalogRepository(dramas: dramas);
   await tester.pumpWidget(
     LumaDramaApp(
       playerFactory: createWidgetPlayer,
@@ -199,6 +305,34 @@ Future<void> _pumpTheater(WidgetTester tester, {List<Drama>? dramas}) async {
   await tester.pumpAndSettle();
 }
 
+ScrollPosition _scrollPosition(WidgetTester tester, Key listKey) {
+  final scrollable = find.descendant(
+    of: find.byKey(listKey),
+    matching: find.byType(Scrollable),
+  );
+  return tester.state<ScrollableState>(scrollable.first).position;
+}
+
+int _countKeys(String prefix) => find
+    .byWidgetPredicate((widget) {
+      final key = widget.key;
+      return key is ValueKey<String> && key.value.startsWith(prefix);
+    })
+    .evaluate()
+    .length;
+
+class _CountingCatalogRepository extends FakeCatalogRepository {
+  _CountingCatalogRepository({super.dramas});
+
+  int fetchCalls = 0;
+
+  @override
+  Future<HomeFeed> fetchHomeFeed() {
+    fetchCalls++;
+    return super.fetchHomeFeed();
+  }
+}
+
 List<Drama> _rankDramas(int count) => [
   for (var index = 0; index < count; index++)
     Drama(