fix(flutter): 修复详情页跳转灰屏

test/player/player_open_detail_test.dart

@@ -0,0 +1,181 @@
+// Author: fruit.com.cn
+
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/drama.dart';
+import 'package:fruitshorts/core/data/models/player_port.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';
+import 'package:fruitshorts/core/data/services/android_picture_in_picture.dart';
+import 'package:fruitshorts/core/data/services/catalog_controller.dart';
+import 'package:fruitshorts/core/data/services/favorite_controller.dart';
+import 'package:fruitshorts/core/data/services/playback_session.dart';
+import 'package:fruitshorts/core/data/services/video_player_port.dart';
+import 'package:fruitshorts/core/platform/haptics.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/drama_detail/drama_detail_view.dart';
+import 'package:fruitshorts/pages/player/player_logic.dart';
+import 'package:fruitshorts/pages/player/player_view.dart';
+import 'package:provider/provider.dart';
+import 'package:video_player/video_player.dart';
+
+import '../support/fake_catalog.dart';
+import '../support/fake_haptics.dart';
+import '../support/fake_watch_history.dart';
+
+void main() {
+  testWidgets(
+    'should_keep_active_player_and_progress_when_detail_route_is_open',
+    (tester) async {
+      final drama = _drama();
+      final history = FakeWatchHistory();
+      final playback = FakePlaybackRepository();
+      final catalog = CatalogController(FakeCatalogRepository(dramas: [drama]));
+      final favorites = FavoriteController(
+        InMemoryFavoriteRepository(saved: {drama.id}, cards: [drama]),
+      );
+      final logic = PlayerLogic(
+        history: history,
+        playback: playback,
+        pictureInPicture: AndroidPictureInPicture(
+          channel: const MethodChannel('test/player_open_detail/pip'),
+        ),
+      );
+      final factory = _RecordingFactory();
+      logic.attach(
+        PlayerPage(drama: drama, initialIndex: 0),
+        isMounted: () => true,
+      );
+      logic.start(factory: factory.create, coordinator: PlaybackCoordinator());
+      await _pumpSession(tester);
+
+      final active = logic.session.active;
+      final index = logic.session.currentIndex;
+      final player = factory.created.first;
+      final playsBefore = player.plays;
+      final tracked = VideoPlayerPort(drama.episodes.first);
+      tracked.controller.value = const VideoPlayerValue(
+        duration: Duration(minutes: 5),
+        position: Duration(seconds: 37),
+        isInitialized: true,
+      );
+      logic
+        ..trackedPlayer = tracked
+        ..trackedEpisode = drama.episodes.first
+        ..trackedDrama = drama;
+
+      late BuildContext pageContext;
+      await tester.pumpWidget(
+        MultiProvider(
+          providers: [
+            Provider<WatchHistoryRepository>.value(value: history),
+            Provider<PlaybackRepository>.value(value: playback),
+            ChangeNotifierProvider<CatalogController>.value(value: catalog),
+            ChangeNotifierProvider<FavoriteController>.value(value: favorites),
+            Provider<Haptics>.value(value: FakeHaptics()),
+          ],
+          child: MaterialApp(
+            locale: const Locale('en'),
+            localizationsDelegates: AppLocalizations.localizationsDelegates,
+            supportedLocales: AppLocalizations.supportedLocales,
+            home: Builder(
+              builder: (context) {
+                pageContext = context;
+                return const SizedBox.shrink();
+              },
+            ),
+          ),
+        ),
+      );
+
+      unawaited(logic.openDetail(pageContext));
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 400));
+      await _pumpSession(tester);
+
+      expect(find.byType(DramaDetailPage), findsOneWidget);
+      expect(logic.session.active, same(active));
+      expect(logic.session.currentIndex, index);
+      expect(logic.session.userWantsPlay, isTrue);
+      expect(player.pauses, 1);
+      expect(player.plays, playsBefore);
+      expect(tracked.controller.value.position, const Duration(seconds: 37));
+      expect(history.writes, isEmpty);
+
+      await tester.pageBack();
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 400));
+      await _pumpSession(tester);
+      await logic.pendingWrite;
+
+      expect(logic.session.active, same(active));
+      expect(logic.session.currentIndex, index);
+      expect(logic.session.userWantsPlay, isTrue);
+      expect(player.plays, playsBefore + 1);
+      expect(tracked.controller.value.position, const Duration(seconds: 37));
+      expect(history.writes, ['signal-1|37000|false']);
+
+      logic
+        ..trackedPlayer = null
+        ..trackedEpisode = null
+        ..trackedDrama = null
+        ..dispose();
+      await _pumpSession(tester);
+      await tracked.dispose();
+    },
+  );
+}
+
+Drama _drama() => Drama(
+  id: 'signal',
+  title: 'Signal',
+  synopsis: 'synopsis',
+  posterUrl: '/files/signal.png',
+  episodes: const [
+    Episode(
+      id: 'signal-1',
+      number: 1,
+      title: 'Episode 1',
+      videoUrl: 'https://example.test/signal-1.mp4',
+      isFree: true,
+    ),
+  ],
+);
+
+Future<void> _pumpSession(WidgetTester tester) async {
+  for (var attempt = 0; attempt < 5; attempt++) {
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 1));
+  }
+}
+
+class _RecordingFactory {
+  final List<_RecordingPlayer> created = [];
+
+  PlayerPort create(Episode episode) {
+    final player = _RecordingPlayer();
+    created.add(player);
+    return player;
+  }
+}
+
+class _RecordingPlayer implements PlayerPort {
+  int plays = 0;
+  int pauses = 0;
+
+  @override
+  Future<void> initialize() async {}
+
+  @override
+  Future<void> play() async => plays++;
+
+  @override
+  Future<void> pause() async => pauses++;
+
+  @override
+  Future<void> dispose() async {}
+}