// 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/preferred_size/preferred_size.0.dart' as example; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('PreferredSize determines the height of AppBarContent', ( WidgetTester tester, ) async { await tester.pumpWidget(const example.PreferredSizeExampleApp()); final PreferredSize preferredSize = tester.widget( find.ancestor( of: find.byType(example.AppBarContent), matching: find.byType(PreferredSize), ), ); final RenderBox appBarContent = tester.renderObject(find.byType(example.AppBarContent)) as RenderBox; expect( preferredSize.preferredSize.height, equals(appBarContent.size.height), ); }); }