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chromium/third_party/blink/web_tests/editing/input/textarea-endofline.html 

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<textarea rows="3" cols="50">foo&#13;&#10;&#13;&#10;bar</textarea>
<script language="javascript" type="text/javascript">
test(function() {
    const textarea = document.querySelector("textarea");
    //Place the cursor at the start of second line (Empty Line) inside textarea.
    textarea.setSelectionRange(4, 4);
    textarea.focus();
    const cursorPositionBefore = textarea.selectionStart;
    eventSender.keyDown("End");
    const cursorPositionAfter = textarea.selectionStart;
    assert_equals(cursorPositionAfter, cursorPositionBefore);
},'Pressing End key on empty line should keep the cursor at the same position.');
</script>
</body>
</html>