| /* |
| * Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @description Test MutationObserver.observe options related to attributes |
| */ |
| import "dart:html"; |
| import "../../../../Utils/expect.dart"; |
| import "../../../../Utils/async_utils.dart"; |
| import "../../../testcommon.dart"; |
| |
| main() { |
| var observer = new MutationObserver((m,o) {}); |
| var element = document.createElement('div'); |
| element.setAttribute('data-test', '1'); |
| |
| observer.observe(element, attributeOldValue: true); |
| element.setAttribute('data-test', '1'); |
| var records = observer.takeRecords(); |
| shouldBe(records.length, 1); |
| shouldBeEqualToString(records[0].oldValue, '1'); |
| observer.disconnect(); |
| |
| observer.observe(element, attributeOldValue: false); |
| element.setAttribute('data-test', '1'); |
| records = observer.takeRecords(); |
| shouldBe(records.length, 1); |
| shouldBeNull(records[0].oldValue); |
| observer.disconnect(); |
| |
| observer.observe(element, attributeFilter: ['data-test']); |
| element.setAttribute('data-test', '2'); |
| records = observer.takeRecords(); |
| shouldBe(records.length, 1); |
| shouldBeNull(records[0].oldValue); |
| observer.disconnect(); |
| } |