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Test Info: Warnings

<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
<window title="Mozilla Bug 937317"
<!-- test results are displayed in the html:body -->
target="_blank">Mozilla Bug 937317</a>
<!-- test code goes here -->
<iframe src="./file_empty.html"></iframe>
<script type="application/javascript">
/** Test for the script settings stack. **/
SpecialPowers.pushPrefEnv({"set": [["security.allow_eval_with_system_principal",
addLoadEvent(function() {
let iwin = window[0];
// Smoketest.
is(Cu.getIncumbentGlobal(), window, "smoketest");
// Calling a cross-compartment non-scripted function changes the
// compartment, but not the incumbent script settings object.
var sb = new Cu.Sandbox(window, { wantComponents: true });
is(sb.Components.utils.getIncumbentGlobal(), window, "cross-compartment sb non-scripted");
is(iwin.Components.utils.getIncumbentGlobal(), window, "cross-compartment win non-scripted");
// If we call a scripted function in the other compartment, that becomes
// the incumbent script.
function gib() { return Cu.getIncumbentGlobal(); };
Cu.evalInSandbox(gib.toSource(), sb);
is(sb.gib(), sb, "cross-compartment sb scripted");
is(iwin.gib(), iwin, "cross-compartment win scripted");
// Eval-ing top-level script in another component makes that compartment the
// incumbent script.
is(Cu.evalInSandbox('Components.utils.getIncumbentGlobal()', sb), sb, 'eval sb');
is(iwin.eval('Components.utils.getIncumbentGlobal()'), iwin, 'eval iwin');
// Make sure that the callback mechanism works.
function makeCallback(expectedGlobal, deferred, kind) {
function cb(incumbentGlobal) {
is(incumbentGlobal, expectedGlobal, "Callback got the right incumbent global: " + kind);
if (deferred)
info("Generated callback: " + kind);
return cb;
var bound = Cu.getIncumbentGlobal.bind(Cu, makeCallback(window, undefined, "simple bound"));
is(bound(), window, "Bound method returns the right global");
// Callbacks grab the incumbent script at the time of invocation.
// Note - We avoid calling the initial defer |d| so that it's not in-scope for everything below.
let initialDefer = Promise.withResolvers();
setTimeout(Cu.getIncumbentGlobal.bind(Cu, makeCallback(window, initialDefer, "same-global setTimeout")), 0);
initialDefer.promise.then(function() {
// Try cross-global setTimeout where |window| is the incumbent script when the callback is created.
let d = Promise.withResolvers();
iwin.setTimeout(Cu.getIncumbentGlobal.bind(Cu, makeCallback(window, d, "cross-global setTimeout by |window|")), 0);
return d.promise;
}).then(function() {
// Try cross-global setTimeout where |iwin| is the incumbent script when the callback is created.
let d = Promise.withResolvers();
iwin.wrappedJSObject.timeoutFun = Cu.getIncumbentGlobal.bind(Cu, makeCallback(iwin, d, "cross-global setTimeout by |iwin|"));
iwin.eval('setTimeout(timeoutFun, 0);');
return d.promise;
}).then(function() {
// The incumbent script override doesn't take effect if the callback is scripted.
let d = Promise.withResolvers();
iwin.wrappedJSObject.timeoutFun2 = Cu.getIncumbentGlobal.bind(Cu, makeCallback(iwin, d, "cross-global setTimeout of scripted function"));
iwin.eval('var timeoutFun2Wrapper = function() { timeoutFun2(); }');
setTimeout(iwin.wrappedJSObject.timeoutFun2Wrapper, 0);
return d.promise;
}).then(function() {
// Try event listeners.
let d = Promise.withResolvers();
let body = iwin.document.body;
body.addEventListener('click', Cu.getIncumbentGlobal.bind(Cu, makeCallback(window, d, "cross-global event listener")));
body.dispatchEvent(new iwin.MouseEvent('click'));
return d.promise;
}).then(function() {
// Try an event handler set by |iwin|.
let d = Promise.withResolvers();
let body = iwin.document.body;
iwin.wrappedJSObject.handler = Cu.getIncumbentGlobal.bind(Cu, makeCallback(iwin, d, "cross-global event handler"));
iwin.eval('document.body.onmousemove = handler');
body.dispatchEvent(new iwin.MouseEvent('mousemove'));
return d.promise;
}).then(function() {
// Try an event handler compiled by a content attribute.
let d = Promise.withResolvers();
let body = iwin.document.body;
iwin.wrappedJSObject.innerHandler = Cu.getIncumbentGlobal.bind(Cu, makeCallback(iwin, d, "cross-global compiled event handler"));
iwin.eval("document.body.setAttribute('onmouseout', 'innerHandler()')");
body.dispatchEvent(new iwin.MouseEvent('mouseout'));
return d.promise;
}).then(function() {