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4283c3e41e
R=sigmund@google.com Review URL: https://codereview.chromium.org//231413003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34890 260f80e4-7a28-3924-810f-c04153c831b5
113 lines
3.4 KiB
Dart
113 lines
3.4 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library mutationobserver_test;
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import 'package:unittest/unittest.dart';
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import 'package:unittest/html_individual_config.dart';
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import 'dart:html';
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// Due to https://code.google.com/p/chromium/issues/detail?id=329103
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// mutationObservers sometimes do not fire if the node being observed is GCed
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// so we keep around references to all nodes we have created mutation
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// observers for.
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var keepAlive = [];
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/**
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* Test suite for Mutation Observers. This is just a small set of sanity
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* checks, not a complete test suite.
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*/
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main() {
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useHtmlIndividualConfiguration();
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group('supported', () {
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test('supported', () {
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expect(MutationObserver.supported, true);
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});
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});
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var expectation = MutationObserver.supported ? returnsNormally : throws;
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group('childList', () {
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mutationCallback(count, expectation) {
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var done = false;
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var nodes = [];
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callback(mutations, observer) {
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for (MutationRecord mutation in mutations) {
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for (Node node in mutation.addedNodes) {
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nodes.add(node);
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}
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}
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if (nodes.length >= count) {
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done = true;
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expect(nodes.length, count);
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expect(nodes, expectation);
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}
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}
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// If it's not supported, don't block waiting for it.
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if (!MutationObserver.supported) {
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return () => done;
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}
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return expectAsyncUntil(callback, () => done);
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}
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test('empty options is syntax error', () {
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expect(() {
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var mutationObserver = new MutationObserver(
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(mutations, observer) { expect(false, isTrue,
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reason: 'Should not be reached'); });
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expect(() { mutationObserver.observe(document, {}); },
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throws);
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}, expectation);
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});
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test('direct-parallel options-named', () {
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expect(() {
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var container = new DivElement();
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keepAlive.add(container);
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var div1 = new DivElement();
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var div2 = new DivElement();
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var mutationObserver = new MutationObserver(
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mutationCallback(2, orderedEquals([div1, div2])));
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mutationObserver.observe(container, childList: true);
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container.append(div1);
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container.append(div2);
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}, expectation);
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});
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test('direct-nested options-named', () {
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expect(() {
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var container = new DivElement();
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keepAlive.add(container);
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var div1 = new DivElement();
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var div2 = new DivElement();
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var mutationObserver =
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new MutationObserver(mutationCallback(1, orderedEquals([div1])));
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mutationObserver.observe(container, childList: true);
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container.append(div1);
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div1.append(div2);
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}, expectation);
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});
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test('subtree options-named', () {
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expect(() {
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var container = new DivElement();
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keepAlive.add(container);
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var div1 = new DivElement();
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var div2 = new DivElement();
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var mutationObserver = new MutationObserver(
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mutationCallback(2, orderedEquals([div1, div2])));
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mutationObserver.observe(container, childList: true, subtree: true);
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container.append(div1);
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div1.append(div2);
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}, expectation);
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});
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});
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}
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