// 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/material.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter/widgets.dart'; void main() { TestWidgetsFlutterBinding.ensureInitialized(); testWidgets('position in the toolbar changes width', (WidgetTester tester) async { late StateSetter setState; int index = 1; int total = 3; await tester.pumpWidget( MaterialApp( home: Scaffold( body: Center( child: StatefulBuilder( builder: (BuildContext context, StateSetter setter) { setState = setter; return TextSelectionToolbarTextButton( child: const Text('button'), padding: TextSelectionToolbarTextButton.getPadding(index, total), ); }, ), ), ), ), ); final Size middleSize = tester.getSize(find.byType(TextSelectionToolbarTextButton)); setState(() { index = 0; total = 3; }); await tester.pump(); final Size firstSize = tester.getSize(find.byType(TextSelectionToolbarTextButton)); expect(firstSize.width, greaterThan(middleSize.width)); setState(() { index = 2; total = 3; }); await tester.pump(); final Size lastSize = tester.getSize(find.byType(TextSelectionToolbarTextButton)); expect(lastSize.width, greaterThan(middleSize.width)); expect(lastSize.width, equals(firstSize.width)); setState(() { index = 0; total = 1; }); await tester.pump(); final Size onlySize = tester.getSize(find.byType(TextSelectionToolbarTextButton)); expect(onlySize.width, greaterThan(middleSize.width)); expect(onlySize.width, greaterThan(firstSize.width)); expect(onlySize.width, greaterThan(lastSize.width)); }); }