fix: 移除 flutter create 默认生成的 widget_test.dart 避免报找不到 MyApp 错误

apps/quanxue/test/widget_test.dart

@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility in the flutter_test package. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:quanxue/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}

tool/generate_app.dart

@@ -207,6 +207,12 @@ void main() {
 ''';
 
   await mainFile.writeAsString(dartContent);
+
+  // 清理 flutter create 默认生成的测试文件（因为它依赖已删除的 MyApp 类）
+  final File defaultTestFile = File('$appDir/test/widget_test.dart');
+  if (defaultTestFile.existsSync()) {
+    await defaultTestFile.delete();
+  }
 }
 
 Future<void> _generateBrandingAssets(