LayoutTests/http/tests/xmlhttprequest/abort-should-destroy-responseText.html

<p>This tests that calling XMLHttpRequest.abort() removes the responseText for the XMLHttpRequest.</p>
<pre id="console"></pre>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();

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

    req = new XMLHttpRequest();
    req.open("GET", "get.txt", false);
    req.send();
    req.abort();
    if (!req.responseText.length)
        log("PASS: abort() cleared the response text.");
    else
        log("FAIL: abort() did not clear the response text.");
</script>