textarea-scrolled-endline-caret.html

<head>
<script>
function test()
{
    if (window.testRunner)
        testRunner.dumpAsText();
    var ta = document.getElementById('ta')
    var res = document.getElementById('res');

    // Send caret to bottom of textarea
    ta.focus();
    ta.setSelectionRange(ta.value.length, ta.value.length);
    ta.blur();

    ta.focus();
    // click
    if (window.eventSender) {
        eventSender.mouseMoveTo(90, 20);
        eventSender.mouseDown();
        eventSender.mouseUp();
        if (ta.selectionEnd == 17)
            res.innerHTML = "Test Succeeded";
        else
            res.innerHTML = "Test Failed: caret is at " + ta.selectionEnd;
    } else {
        res.innerHTML = "Test can't run without event sender (part of DumpRenderTree). "
            + "To test manually, click at the middle of the line marked 9 and check that the caret appears after the 9.";
    }
}
</script>
</head>
<body onload="test()">
<textarea id="ta">
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9
10</textarea>
<div id="res"></div>
</body>

chromium/third_party/blink/web_tests/fast/forms/textarea/textarea-scrolled-endline-caret.html