1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/xpconnect/tests/chrome/test_watchpoints.xul Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,75 @@
1.4 +<?xml version="1.0"?>
1.5 +<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
1.6 +<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
1.7 +<!--
1.8 +https://bugzilla.mozilla.org/show_bug.cgi?id=693527
1.9 +-->
1.10 +<window title="Mozilla Bug "
1.11 + xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
1.12 + <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
1.13 +
1.14 + <!-- test results are displayed in the html:body -->
1.15 + <body xmlns="http://www.w3.org/1999/xhtml">
1.16 + <a href="https://bugzilla.mozilla.org/show_bug.cgi?id="
1.17 + target="_blank">Mozilla Bug 693527</a>
1.18 + </body>
1.19 +
1.20 + <!-- test code goes here -->
1.21 + <script type="application/javascript">
1.22 + <![CDATA[
1.23 + /** Test for Bug 693527 **/
1.24 +
1.25 + let Cu = Components.utils;
1.26 + let Ci = Components.interfaces;
1.27 +
1.28 + /* Create a weak reference, with a single-element weak map. */
1.29 + let make_weak_ref = function (obj) {
1.30 + let m = new WeakMap;
1.31 + m.set(obj, {});
1.32 + return m;
1.33 + };
1.34 +
1.35 + /* Check to see if a weak reference is dead. */
1.36 + let weak_ref_dead = function (r) {
1.37 + return Cu.nondeterministicGetWeakMapKeys(r).length == 0;
1.38 + }
1.39 +
1.40 +
1.41 + let make_cycle = function () {
1.42 + var p = document.createElement("p");
1.43 + p.children.x = p;
1.44 + var f = function() { };
1.45 + p.watch("y", f);
1.46 + var d = document.createElement("div");
1.47 + d.appendChild(p);
1.48 + f.loop = d;
1.49 + f.bar = {}; // observing f directly makes the leak go away even without the CC somehow
1.50 + return make_weak_ref(f.bar);
1.51 + };
1.52 +
1.53 + var cycle_ref = make_cycle();
1.54 +
1.55 +
1.56 + /* set up for running precise GC/CC then checking the results */
1.57 +
1.58 + SimpleTest.waitForExplicitFinish();
1.59 +
1.60 + Cu.schedulePreciseGC(function () {
1.61 + window.QueryInterface(Ci.nsIInterfaceRequestor)
1.62 + .getInterface(Ci.nsIDOMWindowUtils)
1.63 + .cycleCollect();
1.64 + window.QueryInterface(Ci.nsIInterfaceRequestor)
1.65 + .getInterface(Ci.nsIDOMWindowUtils)
1.66 + .garbageCollect();
1.67 + window.QueryInterface(Ci.nsIInterfaceRequestor)
1.68 + .getInterface(Ci.nsIDOMWindowUtils)
1.69 + .garbageCollect();
1.70 +
1.71 + ok(weak_ref_dead(cycle_ref), "Garbage gray watchpoint cycle should be collected.");
1.72 +
1.73 + SimpleTest.finish();
1.74 + });
1.75 +
1.76 + ]]>
1.77 + </script>
1.78 +</window>
