| // 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/widgets/basic/expanded.1.dart' as example; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| testWidgets('Expanded widgets in a Row', (WidgetTester tester) async { |
| const double rowWidth = 800.0; |
| const double rowHeight = 100.0; |
| const double containerOneWidth = (rowWidth - 50) * 2 / 3; |
| const double containerTwoWidth = 50; |
| const double containerThreeWidth = (rowWidth - 50) * 1 / 3; |
| |
| await tester.pumpWidget( |
| const example.ExpandedApp(), |
| ); |
| |
| final Size row = tester.getSize(find.byType(Row)); |
| expect(row, const Size(rowWidth, rowHeight)); |
| |
| // This container is wrapped in an Expanded widget, so it should take up |
| // two thirds of the remaining space in the Row. |
| final Size containerOne = tester.getSize(find.byType(Container).at(0)); |
| expect(containerOne, const Size(containerOneWidth, rowHeight)); |
| |
| final Size containerTwo = tester.getSize(find.byType(Container).at(1)); |
| expect(containerTwo, const Size(containerTwoWidth, rowHeight)); |
| |
| // This container is wrapped in an Expanded widget, so it should take up |
| // one third of the remaining space in the Row. |
| final Size containerThree = tester.getSize(find.byType(Container).at(2)); |
| expect(containerThree, const Size(containerThreeWidth, rowHeight)); |
| }); |
| } |