| // Copyright 2014 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:flutter/material.dart'; |
| import 'package:flutter_api_samples/material/list_tile/custom_list_item.1.dart' as example; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('Custom list item uses AspectRatio and Expanded widgets for the layout', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const example.CustomListItemApp(), |
| ); |
| |
| // The AspectRatio widget is used to constrain the size of the thumbnail. |
| AspectRatio thumbnailAspectRatio = tester.widget(find.ancestor( |
| of: find.byType(Container).first, |
| matching: find.byType(AspectRatio), |
| )); |
| expect(thumbnailAspectRatio.aspectRatio, 1.0); |
| |
| // The Expanded widget is used to control the size of the text. |
| final Expanded textExpanded = tester.widget(find.ancestor( |
| of: find.text('Flutter 1.0 Launch'), |
| matching: find.byType(Expanded).at(0), |
| )); |
| expect(textExpanded.flex, 1); |
| |
| // The AspectRatio widget is used to constrain the size of the thumbnail. |
| thumbnailAspectRatio = tester.widget(find.ancestor( |
| of: find.byType(Container).last, |
| matching: find.byType(AspectRatio), |
| )); |
| expect(thumbnailAspectRatio.aspectRatio, 1.0); |
| }); |
| } |