packages/flutter/test/widgets/semantics_event_test.dart

// 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/semantics.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  test('SemanticsEvent.toString', () {
    expect(
      TestSemanticsEvent().toString(),
      'TestSemanticsEvent()',
    );
    expect(
      TestSemanticsEvent(number: 10).toString(),
      'TestSemanticsEvent(number: 10)',
    );
    expect(
      TestSemanticsEvent(text: 'hello').toString(),
      'TestSemanticsEvent(text: hello)',
    );
    expect(
      TestSemanticsEvent(text: 'hello', number: 10).toString(),
      'TestSemanticsEvent(number: 10, text: hello)',
    );
  });
  test('SemanticsEvent.toMap', () {
    expect(
      TestSemanticsEvent(text: 'hi', number: 11).toMap(),
      <String, dynamic>{
        'type': 'TestEvent',
        'data': <String, dynamic>{
          'text': 'hi',
          'number': 11,
        },
      },
    );
    expect(
      TestSemanticsEvent(text: 'hi', number: 11).toMap(nodeId: 123),
      <String, dynamic>{
        'type': 'TestEvent',
        'nodeId': 123,
        'data': <String, dynamic>{
          'text': 'hi',
          'number': 11,
        },
      },
    );
  });
}

class TestSemanticsEvent extends SemanticsEvent {
  TestSemanticsEvent({ this.text, this.number }) : super('TestEvent');

  final String text;
  final int number;

  @override
  Map<String, dynamic> getDataMap() {
    final Map<String, dynamic> result = <String, dynamic>{};
    if (text != null)
      result['text'] = text;
    if (number != null)
      result['number'] = number;
    return result;
  }
}