| // 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_test/flutter_test.dart'; |
| |
| import '../foundation/leak_tracking.dart'; |
| |
| void main() { |
| testWidgetsWithLeakTracking('positions itself at anchorAbove if it fits and shifts up when not', (WidgetTester tester) async { |
| late StateSetter setState; |
| const double toolbarOverlap = 100; |
| const double height = 500; |
| double anchorY = 200.0; |
| |
| await tester.pumpWidget( |
| MediaQuery( |
| data: const MediaQueryData(), |
| child: Directionality( |
| textDirection: TextDirection.ltr, |
| child: StatefulBuilder( |
| builder: (BuildContext context, StateSetter setter) { |
| setState = setter; |
| return CustomSingleChildLayout( |
| delegate: SpellCheckSuggestionsToolbarLayoutDelegate( |
| anchor: Offset(50.0, anchorY), |
| ), |
| child: Container( |
| width: 200.0, |
| height: height, |
| color: const Color(0xffff0000), |
| ), |
| ); |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| // When the toolbar doesn't fit below anchor, it positions itself such that |
| // it can just fit. |
| double toolbarY = tester.getTopLeft(find.byType(Container)).dy; |
| // Total height available is 600. |
| expect(toolbarY, equals(toolbarOverlap)); |
| |
| // When it does fit below anchor, it positions itself there. |
| setState(() { |
| anchorY = anchorY - toolbarOverlap; |
| }); |
| await tester.pump(); |
| toolbarY = tester.getTopLeft(find.byType(Container)).dy; |
| expect(toolbarY, equals(anchorY)); |
| }); |
| } |