mutation-during-append-child.html | Explore in Territory

<!DOCTYPE html>
<html>
<head>
<script src="../../../../resources/js-test.js"></script>
</head>
<body>
<div>
  <div id="child"></div>
  <div id="newparent"></div>
</div>
<script>
description("Ensures that appendChild() throws an exception if mutation even handler does something wrong");

var listener = function() {
    document.removeEventListener("DOMNodeRemoved", listener, false);
    child.appendChild(newparent);
};
document.addEventListener("DOMNodeRemoved", listener, false);
shouldThrow("newparent.appendChild(child);",  '"HierarchyRequestError: Failed to execute \'appendChild\' on \'Node\': The new child element contains the parent."');
</script>
</body>
</html>

chromium/third_party/blink/web_tests/dom/mutation-event-tests/fast/events/mutation-during-append-child.html