import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:demo_project/main.dart'; void main() { testWidgets('Counter increments smoke test', (WidgetTester tester) async { // Build our app and trigger a frame. await tester.pumpWidget(const DemoApp()); // 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); }); }