// 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/widgets.dart'; import 'package:flutter_test/flutter_test.dart'; import 'semantics_tester.dart'; void main() { testWidgets('Semantics 3', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); // implicit annotators await tester.pumpWidget( Semantics( container: true, child: Semantics( label: 'test', textDirection: TextDirection.ltr, child: Semantics( checked: true, ), ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics.rootChild( id: 1, flags: SemanticsFlag.hasCheckedState.index | SemanticsFlag.isChecked.index, label: 'test', rect: TestSemantics.fullScreen, ), ], ), )); // remove one await tester.pumpWidget( Semantics( container: true, child: Semantics( checked: true, ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics.rootChild( id: 1, flags: SemanticsFlag.hasCheckedState.index | SemanticsFlag.isChecked.index, rect: TestSemantics.fullScreen, ), ], ), )); // change what it says await tester.pumpWidget( Semantics( container: true, child: Semantics( label: 'test', textDirection: TextDirection.ltr, ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics.rootChild( id: 1, label: 'test', textDirection: TextDirection.ltr, rect: TestSemantics.fullScreen, ), ], ), )); // add a node await tester.pumpWidget( Semantics( container: true, child: Semantics( checked: true, child: Semantics( label: 'test', textDirection: TextDirection.ltr, ), ), ), ); expect(semantics, hasSemantics( TestSemantics.root( children: <TestSemantics>[ TestSemantics.rootChild( id: 1, flags: SemanticsFlag.hasCheckedState.index | SemanticsFlag.isChecked.index, label: 'test', rect: TestSemantics.fullScreen, ), ], ), )); int changeCount = 0; tester.binding.pipelineOwner.semanticsOwner!.addListener(() { changeCount += 1; }); // make no changes await tester.pumpWidget( Semantics( container: true, child: Semantics( checked: true, child: Semantics( label: 'test', textDirection: TextDirection.ltr, ), ), ), ); expect(changeCount, 0); semantics.dispose(); }); }