test_bug456151.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=456151

-->

<head>

  <title>Test for Bug 456151</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script src="/tests/SimpleTest/EventUtils.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=456151">Mozilla Bug 456151</a>

<p id="display"></p>

<div id="content" style="display: none">

</div>

<pre id="test">

<script type="application/javascript">

/** Test for Bug 456151 **/

var intercepted = false;

// Set up our new addEventListener

var proto = HTMLParagraphElement.prototype;

proto.oldAdd = proto.addEventListener;

proto.addEventListener = function(ev, list, capt) {

  intercepted = true;

  this.oldAdd(ev, list, capt);

proto.oldRemove = proto.removeEventListener;

proto.removeEventListener = function(ev, list, capt) {

  intercepted = true;

  this.oldRemove(ev, list, capt);

var called = false;

var func = function() { called = true; };

$("display").addEventListener("click", func);

is(intercepted, true, "Should have interecepted addEventListener call");

sendMouseEvent({type: "click"}, "display");

is(called, true, "Should have called event listener");

interecepted = false;

called = false;

$("display").removeEventListener("click", func);

is(intercepted, true, "Should have interecepted removeEventListener call");

sendMouseEvent({type: "click"}, "display");

is(called, false, "Should have removed event listener");

// And now some simple sanity tests

var recursion = false;

var x = document.createElement("span");

HTMLSpanElement.prototype.addEventListener =

  function(a, b, c) {

    return x.addEventListener(a,b,c);

try {

  x.addEventListener("click", function() { called = true; });

} catch (e) {

  recursion = e.message.match(/recursion/);

SimpleTest.isDeeply(recursion, ["recursion"], "Caught infinite recursion");

</script>

</pre>

</body>

</html>