chromium/third_party/blink/web_tests/scrollbars/scrollbar-miss-mousemove.html

<html>
<body style="margin:0">
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
</script>
<div id="overflow" style="border:2px solid black;overflow:auto;height:400px;width:400px; position:absolute;">
<div style="background-color:green;height:1000px"></div>
<div style="background-color:red;height:1000px"></div>
</div>
<p>Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=27289">bug
27289</a>: This tests that mouse clicks/releases on scrollbars are handled
properly even is there was no mouse move onto the scrollbar; this is the
enabled control case. On success, the offset should be 0.<p/>
<div id="console"></div>
<script>
if (window.eventSender) {
    document.getElementById('overflow').style.display = "none";
    eventSender.mouseMoveTo(390, 10);
    document.getElementById('overflow').style.display = "";
    eventSender.mouseDown();
    eventSender.mouseUp();
    eventSender.mouseMoveTo(390, 350);
    setTimeout(finished, 500);
}

function finished()
{
    document.getElementById('console').innerHTML
        = "Scroll offset is " + document.getElementById('overflow').scrollTop;
    testRunner.notifyDone();
}
</script>
</body>
</html>