<html>
    <head>
        <script>
            function test()
            {
                if (window.testRunner) {
                    testRunner.dumpAsText();
                    testRunner.dumpEditingCallbacks();
                }
                var ta = document.getElementById('ta');
                ta.focus();
                document.execCommand("SelectAll");
            }
        </script>
    </head>
    <body onload="test()">
        This tests that select all works in a readonly textarea, without selecting the surrounding text.
        <br>
        <textarea id="ta" readonly>This text should be selected</textarea>
    </body>
</html>