chromium/third_party/blink/web_tests/fast/forms/select/select-reset.html

<head>
<script>
function test()
{
    if (window.testRunner)
        testRunner.dumpAsText();
    var select = document.getElementById('select');
    var index = select.selectedIndex;
    document.forms[0].reset();
    var message = "selected index is " + index + " before and " + select.selectedIndex + " after reset().";
    var paragraph = document.createElement('p');
    paragraph.appendChild(document.createTextNode(message));
    document.getElementById('console').appendChild(paragraph);
}
</script>
</head>
<body onload="test();">
<p>This tests reseting of a select box with no selected options using JavaScript. If successful, both times the selected index should be 0.<form>
<form>
<select id="select">
<option>Option 0</option>
<option>Option 1</option>
<option>Option 2</option>
</select>
</form>
<p id="console"></p>
</body>