| // 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_test/flutter_test.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter/widgets.dart'; |
| |
| Future<Size> _getSize(WidgetTester tester, BoxConstraints constraints, double aspectRatio) async { |
| final Key childKey = UniqueKey(); |
| await tester.pumpWidget( |
| Center( |
| child: ConstrainedBox( |
| constraints: constraints, |
| child: AspectRatio( |
| aspectRatio: aspectRatio, |
| child: Container( |
| key: childKey |
| ), |
| ), |
| ), |
| ), |
| ); |
| final RenderBox box = tester.renderObject(find.byKey(childKey)); |
| return box.size; |
| } |
| |
| void main() { |
| testWidgets('Aspect ratio control test', (WidgetTester tester) async { |
| expect(await _getSize(tester, BoxConstraints.loose(const Size(500.0, 500.0)), 2.0), equals(const Size(500.0, 250.0))); |
| expect(await _getSize(tester, BoxConstraints.loose(const Size(500.0, 500.0)), 0.5), equals(const Size(250.0, 500.0))); |
| }); |
| |
| testWidgets('Aspect ratio infinite width', (WidgetTester tester) async { |
| final Key childKey = UniqueKey(); |
| await tester.pumpWidget(Directionality( |
| textDirection: TextDirection.ltr, |
| child: Center( |
| child: SingleChildScrollView( |
| scrollDirection: Axis.horizontal, |
| child: AspectRatio( |
| aspectRatio: 2.0, |
| child: Container( |
| key: childKey |
| ), |
| ), |
| ), |
| ), |
| )); |
| final RenderBox box = tester.renderObject(find.byKey(childKey)); |
| expect(box.size, equals(const Size(1200.0, 600.0))); |
| }); |
| } |