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43 lines
1.5 KiB
HTML
43 lines
1.5 KiB
HTML
<html>
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<link rel="import" href="../resources/chai.html" />
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<link rel="import" href="../resources/mocha.html" />
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<script>
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describe('Non-relevant properties on mutation records should be null, except for NodeLists, which should be empty', function() {
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var observer = new MutationObserver(function() {});
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it('on characterData records', function() {
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var text = document.createTextNode('something');
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observer.observe(text, {characterData: true});
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text.data = 'something else';
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var record = observer.takeRecords()[0];
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assert.isNull(record.attributeName);
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assert.isNull(record.oldValue);
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assert.isNull(record.previousSibling);
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assert.isNull(record.nextSibling);
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assert.equal(record.addedNodes.length, 0);
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assert.equal(record.removedNodes.length, 0);
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});
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it('on childList records', function() {
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var div = document.createElement('div');
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observer.observe(div, {childList: true});
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div.appendChild(document.createElement('span'));
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record = observer.takeRecords()[0];
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assert.isNull(record.attributeName);
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assert.isNull(record.oldValue);
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});
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it('on attribute records', function() {
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var div = document.createElement('div');
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observer.observe(div, {attributes: true});
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div.setAttribute('data-foo', 'bar');
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record = observer.takeRecords()[0];
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assert.isNull(record.oldValue);
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assert.isNull(record.previousSibling);
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assert.isNull(record.nextSibling);
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assert.equal(record.addedNodes.length, 0);
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assert.equal(record.removedNodes.length, 0);
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});
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});
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</script>
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</html>
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