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// 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)));
});
}