<!DOCTYPE html>
<html>
<head>
<style>
* { display:block; }
.collapse { visibility:collapse; }
</style>
<script>

if (window.testRunner) {
    window.testRunner.dumpAsText();
    window.testRunner.waitUntilDone();
}

document.designMode = "on";
var scriptElements = document.getElementsByTagName("script");
scriptElements[0].parentNode.removeChild(scriptElements[0]);
var eventHandlerActive = false;

document.addEventListener("input", function () {
    if (eventHandlerActive)
        return;
    eventHandlerActive = true;
    var srcElement = event.srcElement;
    document.execCommand('InsertText',false,'dummy text');
    srcElement.textContent = "Pass. Test didn't crash.";
    eventHandlerActive = false;
    if (window.testRunner)
        testRunner.notifyDone();
}, true);

document.addEventListener("DOMCharacterDataModified", function () {
    document.execCommand('InsertParagraph',false,false);
}, false);

window.addEventListener("load", function() {
  document.execCommand("SelectAll", false)
  document.execCommand("Delete", false)
  document.execCommand('Undo', false);
});

</script>
</head>
<body>
<table class="collapse">
<caption>
original text
</caption>
</table>
</body>
</html>