<!DOCTYPE html>
<html>
<body>
<p>This test passes if it does not crash.</p>
<input type="text" id="testInput" value="test value"/>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

document.getElementById("testInput").focus();
for (var i = 0; i < 20; i++) {
    document.execCommand("InsertText", true, "Arial");
    document.execCommand("ContentReadOnly", true, null);
    document.execCommand("FontSize", false, "6");
}
</script>
</body>
</html>