blob: e3bbdf4bbce8ab9add54252a7be66d342ee5741b [file] [log] [blame]
// Copyright (c) 2013, 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.
library mutation_observer_test;
import 'dart:html';
import 'package:unittest/unittest.dart';
import 'package:unittest/html_config.dart';
main() {
useHtmlConfiguration();
// Load the MutationObserver polyfill.
HttpRequest.getString('/root_dart/pkg/mutation_observer/lib/'
'mutation_observer.min.js').then((code) {
// Force MutationObserver polyfill to be used so we can test it, even in
// browsers with native support.
document.head.children.add(new ScriptElement()
..text = 'window.MutationObserver = void 0;'
'window.WebKitMutationObserver = void 0;'
'$code');
testMutationObserver();
});
}
/**
* Test suite for Mutation Observers. This is just a small set of sanity
* checks, not a complete test suite.
*/
testMutationObserver() {
group('supported', () {
test('supported', () {
expect(MutationObserver.supported, true, reason: 'polyfill loaded.');
});
});
group('childList', () {
mutationCallback(count, expectation) {
var done = false;
var nodes = [];
callback(mutations, observer) {
for (MutationRecord mutation in mutations) {
for (Node node in mutation.addedNodes) {
nodes.add(node);
}
}
if (nodes.length >= count) {
done = true;
expect(nodes.length, count);
expect(nodes, expectation);
}
}
return expectAsyncUntil2(callback, () => done);
}
test('empty options is syntax error', () {
var mutationObserver = new MutationObserver(
(mutations, observer) { expect(false, isTrue,
reason: 'Should not be reached'); });
expect(() { mutationObserver.observe(document); },
throws);
});
test('direct-parallel options-named', () {
var container = new DivElement();
var div1 = new DivElement();
var div2 = new DivElement();
var mutationObserver = new MutationObserver(
mutationCallback(2, orderedEquals([div1, div2])));
mutationObserver.observe(container, childList: true);
container.append(div1);
container.append(div2);
});
test('direct-nested options-named', () {
var container = new DivElement();
var div1 = new DivElement();
var div2 = new DivElement();
var mutationObserver =
new MutationObserver(mutationCallback(1, orderedEquals([div1])));
mutationObserver.observe(container, childList: true);
container.append(div1);
div1.append(div2);
});
test('subtree options-named', () {
var container = new DivElement();
var div1 = new DivElement();
var div2 = new DivElement();
var mutationObserver = new MutationObserver(
mutationCallback(2, orderedEquals([div1, div2])));
mutationObserver.observe(container, childList: true, subtree: true);
container.append(div1);
div1.append(div2);
});
});
}