chromium/third_party/blink/web_tests/http/tests/xmlhttprequest/cross-site-denied-response.html

<body>
<pre id=preOnerror>FAIL: onerror was not called.</pre>
<pre id=console></pre>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

function log(message)
{
    document.getElementById('console').appendChild(document.createTextNode(message + '\n'));
}

var hadError = false;
function error(message)
{
    hadError = true;
    log("FAIL: " + message);
}

function checkResponse()
{
    try {
        document.body.removeChild(document.getElementById('preOnerror'));

        if (req.responseText.length)
            error("responseText is not empty");
        if (req.responseXML)
            error("responseXML is not null");
        try {
            if (req.status)
                error("status is not zero: " + req.status);
        } catch (ex) {
        }
        try {
            if (req.statusText)
                error("statusText is not empty: " + req.statusText);
            } catch (ex) {
        }
        try {
            if (req.getAllResponseHeaders().length)
                error("getAllResponseHeaders() result is not empty: " + req.getAllResponseHeaders());
            } catch (ex) {
        }

        if (!hadError)
            log("PASS");
    } catch (ex) {
        log(ex);
    }
    if (window.testRunner)
        testRunner.notifyDone();
}

var req = new XMLHttpRequest;
req.open("GET", "http://localhost:8000/xmlhttprequest/resources/reply.xml")
req.onerror = function() { setTimeout(checkResponse, 100); } // Giving the time for load to continue.
req.send(null);
</script>
</body>