| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:example/staggered_layout_example.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('StaggeredExample lays out children correctly', |
| (WidgetTester tester) async { |
| tester.view.physicalSize = const Size(400, 200); |
| tester.view.devicePixelRatio = 1.0; |
| addTearDown(tester.view.reset); |
| |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: StaggeredExample(), |
| ), |
| ); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Index 0'), findsOneWidget); |
| expect(tester.getTopLeft(find.text('Index 0')), const Offset(0.0, 56.0)); |
| expect(find.text('Index 8'), findsOneWidget); |
| expect(tester.getTopLeft(find.text('Index 8')), const Offset(100.0, 146.0)); |
| expect(find.text('Index 10'), findsOneWidget); |
| expect( |
| tester.getTopLeft(find.text('Index 10')), |
| const Offset(200.0, 196.0), |
| ); |
| }); |
| } |