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

<html>
<head>
<script src="../../../editing/editing.js" language="JavaScript" type="text/JavaScript" ></script>
<script>
function test()
{
    var res = document.getElementById('res');
    var ta = document.getElementById('ta');

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

    ta.focus();
    ta.setSelectionRange(44, 44);
    typeCharacterCommand(' ');
    typeCharacterCommand('P');
    typeCharacterCommand('a');
    typeCharacterCommand('s');
    typeCharacterCommand('s');

}
</script>
</head>
<body onload="test()">
This tests that typing in a scrolled textarea does not cause unnecessary scrolling.<br>
<textarea id="ta" rows=7>
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</textarea>
<br>
<div id="res"></div>
</body>
</html>