<html>
<link rel="import" href="../resources/chai.html" />
<link rel="import" href="../resources/mocha.html" />
<script>
describe('MutationObserver', function() {
    it('should not invoke callbacks when appending a script', function() {
        var mutationsDelivered = false;
        function callback(mutations) {
            mutationsDelivered = true;
        }

        var observer = new MutationObserver(callback);
        var div = document.createElement('div');
        observer.observe(div, {attributes: true});
        div.setAttribute('foo', 'bar');
        assert.notOk(mutationsDelivered);
        var scriptDidRun = false;
        var script = document.createElement('script');
        script.textContent = 'scriptDidRun = true';
        assert.notOk(scriptDidRun);
        document.documentElement.appendChild(script);
        assert.notOk(scriptDidRun);
        assert.notOk(mutationsDelivered);
    });
});
</script>
</html>