style(theme): 客户端切换深色视觉风格

test/theme/dark_theme_smoke_test.dart

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+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/remote/api_client.dart';
+import 'package:fruitshorts/core/data/remote/auth_api.dart';
+import 'package:fruitshorts/core/data/services/auth_controller.dart';
+import 'package:fruitshorts/core/data/services/auth_session_store.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
+import 'package:fruitshorts/core/theme/app_theme.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/watch_records/watch_records_page.dart';
+import 'package:provider/provider.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';
+
+import '../support/fake_http_adapter.dart';
+
+void main() {
+  setUp(() {
+    SharedPreferencesAsyncPlatform.instance =
+        InMemorySharedPreferencesAsync.empty();
+  });
+
+  testWidgets('should_render_material_app_with_dark_default_theme', (
+    tester,
+  ) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        theme: AppTheme.dark(),
+        darkTheme: AppTheme.dark(),
+        themeMode: ThemeMode.dark,
+        locale: const Locale('en'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: Scaffold(
+          key: const Key('dark-smoke-scaffold'),
+          appBar: AppBar(title: const Text('Dark')),
+          body: Card(
+            key: const Key('dark-smoke-card'),
+            child: ListTile(
+              title: Text(
+                'Primary',
+                style: TextStyle(color: AppColors.onSurface),
+              ),
+              subtitle: Text('Muted', style: TextStyle(color: AppColors.muted)),
+              trailing: Text('128', style: TextStyle(color: AppColors.gold)),
+            ),
+          ),
+          bottomNavigationBar: NavigationBar(
+            selectedIndex: 0,
+            destinations: const [
+              NavigationDestination(icon: Icon(Icons.home), label: 'Home'),
+              NavigationDestination(icon: Icon(Icons.person), label: 'Mine'),
+            ],
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    final context = tester.element(
+      find.byKey(const Key('dark-smoke-scaffold')),
+    );
+    final theme = Theme.of(context);
+    expect(theme.brightness, Brightness.dark);
+    expect(theme.scaffoldBackgroundColor, AppColors.ink);
+    expect(theme.appBarTheme.backgroundColor, AppColors.card);
+    expect(theme.cardTheme.color, AppColors.card);
+
+    final card = tester.widget<Card>(find.byKey(const Key('dark-smoke-card')));
+    expect(card.color ?? theme.cardTheme.color, AppColors.card);
+    expect(find.text('Primary'), findsOneWidget);
+    expect(find.text('Muted'), findsOneWidget);
+    expect(find.text('128'), findsOneWidget);
+  });
+
+  testWidgets('should_render_watch_records_page_on_dark_surface', (
+    tester,
+  ) async {
+    final auth = AuthController(
+      AuthApi(
+        ApiClient(
+          baseUrl: 'http://127.0.0.1:1',
+          adapter: FakeHttpAdapter(
+            (_) async =>
+                FakeHttpResponse('{"code":0,"message":"ok","data":null}'),
+          ),
+        ),
+      ),
+      AuthSessionStore(),
+    );
+
+    await tester.pumpWidget(
+      ChangeNotifierProvider<AuthController>.value(
+        value: auth,
+        child: MaterialApp(
+          theme: AppTheme.dark(),
+          darkTheme: AppTheme.dark(),
+          themeMode: ThemeMode.dark,
+          locale: const Locale('en'),
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: const WatchRecordsPage(),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    final scaffold = tester.widget<Scaffold>(
+      find.byKey(const Key('watch-records-page')),
+    );
+    expect(scaffold.backgroundColor, AppColors.ink);
+    expect(find.byKey(const Key('auth-gate-panel')), findsOneWidget);
+    expect(find.byType(Scaffold), findsOneWidget);
+  });
+}