LayoutTests/fast/forms/node-list-remove-button-from-form.html

<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test.js"></script>
</head>
<body>
<p id="description"></p>
<div id="console"></div>
<button id="aButton" form="aForm"></button>
<form id="aForm"></form>
<script>
description("Tests that removing a &lt;button&gt; from the document removes it from HTMLFormElement.elements.");

runTest();

function runTest()
{
    debug("Before removal of button:");
    shouldBeNonNull("document.getElementById('aForm').elements");
    shouldBe("document.getElementById('aForm')['aButton']", "document.getElementById('aButton')");
    document.getElementById('aButton').remove();

    debug("<br>After removal of button:");
    shouldBeUndefined("document.getElementById('aForm')['aButton']");
}
</script>
</body>
</html>