35 lines
1.3 KiB
Dart
35 lines
1.3 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_api_samples/widgets/basic/overflowbox.0.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('OverflowBox allows child widget to overflow parent container', (
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WidgetTester tester,
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) async {
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const Size containerSize = Size(100, 100);
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const Size maxSize = Size(200, 200);
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await tester.pumpWidget(const example.OverflowBoxApp());
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// The parent container has fixed width and height of 100 pixels.
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expect(tester.getSize(find.byType(Container).first), containerSize);
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final OverflowBox overflowBox = tester.widget(find.byType(OverflowBox));
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// The OverflowBox imposes its own constraints of maxWidth and maxHeight of
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// 200 on its child which allows the child to overflow the parent container.
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expect(overflowBox.maxWidth, maxSize.width);
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expect(overflowBox.maxHeight, maxSize.height);
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// The child widget overflows the parent container.
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expect(
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tester.getSize(find.byType(FlutterLogo)),
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greaterThan(containerSize),
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);
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expect(tester.getSize(find.byType(FlutterLogo)), maxSize);
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});
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}
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