semantics_5_test.dart

// Copyright 2015 The Chromium 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 'package:test/test.dart';

import 'test_semantics.dart';

void main() {
  test('Semantics 5', () {
    testWidgets((WidgetTester tester) {
      TestSemanticsListener client = new TestSemanticsListener();

      tester.pumpWidget(
        new Stack(
          children: <Widget>[
            new Semantics(
              // this tests that empty nodes disappear
            ),
            new Semantics(
              // this tests whether you can have a container with no other semantics
              container: true
            ),
            new Semantics(
              label: 'label' // (force a fork)
            ),
          ]
        )
      );
      expect(client.updates.length, equals(2));
      expect(client.updates[0].id, equals(0));
      expect(client.updates[0].flags.hasCheckedState, isFalse);
      expect(client.updates[0].strings.label, equals(''));
      expect(client.updates[0].children.length, equals(2));
      expect(client.updates[0].children[0].id, equals(1));
      expect(client.updates[0].children[0].flags.hasCheckedState, isFalse);
      expect(client.updates[0].children[0].strings.label, equals(''));
      expect(client.updates[0].children[1].id, equals(2));
      expect(client.updates[0].children[1].flags.hasCheckedState, isFalse);
      expect(client.updates[0].children[1].strings.label, equals('label'));
      expect(client.updates[1], isNull);
      client.updates.clear();

    });
  });
}