chromium/third_party/blink/web_tests/fast/forms/textfield-clone.html

<!DOCTYPE html>
<script src="../../resources/js-test.js"></script>
<p>There was a bug that the value property of a cloned text input was not updated.</p>
<div id=container>
<input id=i1 value="Initial" style>
<input id=i2 type=search value="Initial" style>
<input id=i3 type=number value="0" style>
</div>
<div id=console></div>
<script>
var clone;
var container = document.getElementById('container');
var newValue;

function check(id, value) {
    var original = document.getElementById(id);
    clone = original.cloneNode();
    container.replaceChild(clone, original);
    clone.focus();
    document.execCommand('selectAll');
    document.execCommand('insertText', false, value);
    newValue = value;
    debug('Check for ' + clone.type + ' type:');
    shouldBe('clone.value', 'newValue');
}

check('i1', 'foo');
check('i2', 'query');
check('i3', '13');
container.innerHTML = '';
</script>