feat: загрузки

test/downloads_screen_test.dart

@@ -0,0 +1,94 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:komet/core/utils/download_history.dart';
+import 'package:komet/core/utils/media_cache.dart';
+import 'package:komet/frontend/screens/downloads_screen.dart';
+import 'package:komet/l10n/app_localizations.dart';
+import 'package:path_provider_platform_interface/path_provider_platform_interface.dart';
+import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class _SyntheticPathProvider extends PathProviderPlatform
+    with MockPlatformInterfaceMixin {
+  final String directory;
+
+  _SyntheticPathProvider(this.directory);
+
+  @override
+  Future<String?> getApplicationSupportPath() async => directory;
+}
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('download kinds are inferred from synthetic file names', () {
+    expect(downloadKindForName('sample.gif'), DownloadKind.gif);
+    expect(downloadKindForName('clip.mp4'), DownloadKind.video);
+    expect(downloadKindForName('sound.ogg'), DownloadKind.audio);
+    expect(downloadKindForName('picture.png'), DownloadKind.photo);
+    expect(downloadKindForName('package.zip'), DownloadKind.file);
+  });
+
+  testWidgets('recent downloads show persisted metadata', (tester) async {
+    final directory = Directory.systemTemp.createTempSync(
+      'synthetic_downloads_test',
+    );
+    addTearDown(() {
+      DownloadHistory.resetForTesting();
+      if (directory.existsSync()) directory.deleteSync(recursive: true);
+    });
+    PathProviderPlatform.instance = _SyntheticPathProvider(directory.path);
+    SharedPreferences.setMockInitialValues({});
+
+    await tester.runAsync(() async {
+      DownloadHistory.resetForTesting();
+      final file = await MediaCache.fileFor('synthetic-package.zip');
+      await file.writeAsBytes(List<int>.filled(2048, 1));
+      await DownloadHistory.record(
+        const DownloadMetadata(
+          cacheName: 'synthetic-package.zip',
+          name: 'sample-package.zip',
+          kind: DownloadKind.file,
+          sourceName: 'Synthetic channel',
+          chatId: 77,
+          messageId: 'synthetic-message',
+          messageTime: 123456,
+        ),
+        file,
+      );
+      DownloadHistory.resetForTesting();
+      await DownloadHistory.load();
+    });
+
+    final record = DownloadHistory.records.value.single;
+    expect(record.chatId, 77);
+    expect(record.messageId, 'synthetic-message');
+    expect(record.messageTime, 123456);
+
+    await tester.pumpWidget(
+      const MaterialApp(
+        locale: Locale('ru'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: DownloadsScreen(),
+      ),
+    );
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.text('Недавние загрузки'), findsOneWidget);
+    expect(find.text('sample-package.zip'), findsOneWidget);
+    expect(find.text('2.0 КБ · Synthetic channel'), findsOneWidget);
+    expect(find.byKey(const ValueKey('downloads-settings')), findsOneWidget);
+
+    await tester.tap(
+      find.byKey(const ValueKey('download-more-synthetic-package.zip')),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('Перейти к сообщению'), findsOneWidget);
+    expect(find.text('Сохранить как…'), findsOneWidget);
+  });
+}

test/media_viewer_video_test.dart

@@ -66,6 +66,7 @@ void main() {
     expect(find.text('00:12'), findsOneWidget);
     expect(find.byKey(const ValueKey('video-play-toggle')), findsOneWidget);
     expect(find.byKey(const ValueKey('video-settings')), findsOneWidget);
+    expect(find.byKey(const ValueKey('downloads-button')), findsNothing);
     expect(find.byIcon(Symbols.rotate_90_degrees_ccw), findsOneWidget);
     expect(find.byIcon(Symbols.download), findsNothing);
     expect(find.byType(GlassSurface), findsOneWidget);