<!DOCTYPE html>
<script src="../../../resources/js-test.js"></script>
<script src="testutils.js"></script>
<body>
<x-a></x-a>
<script>
if (fork()) {
    // The controlling parent frame
    description('Tests destroying a context during attributeChanged callback.');
    jsTestIsAsync = true;
    successfullyParsed = true;
} else {
    // The child frame

    var proto = Object.create(HTMLElement.prototype);
    proto.attributeChangedCallback = function () {
        destroyContext();
    };

    var A = document.registerElement('x-a', {prototype: proto});
    var a = new A();
    a.id = 'boom';
    done();
}
</script>