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Bug 937317 - Tests. r=bz

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This commit is contained in:
Bobby Holley 2013-12-06 12:01:43 -08:00
parent 4cd4da5181
commit e57ccfca4b
4 changed files with 165 additions and 1 deletions
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13
js/xpconnect/idl/xpccomponents.idl
View File

@ -120,7 +120,7 @@ interface ScheduledGCCallback : nsISupports
/**
* interface of Components.utils
*/
[scriptable, uuid(ef621cac-c818-464a-9fb1-9a35731a7f32)]
[scriptable, uuid(e14f588b-63aa-4091-be82-a459a52f8ca6)]
interface nsIXPCComponents_Utils : nsISupports
{
@ -507,6 +507,17 @@ interface nsIXPCComponents_Utils : nsISupports
*/
nsIClassInfo getDOMClassInfo(in AString aClassName);
/**
* Gets the incument global for the execution of this function. For internal
* and testing use only.
*
* If |callback| is passed, it is invoked with the incumbent global as its
* sole argument. This allows the incumbent global to be measured in callback
* environments with no scripted frames on the stack.
*/
[implicit_jscontext]
jsval getIncumbentGlobal([optional] in jsval callback);
/**
* Retrieve the last time, in microseconds since epoch, that a given
* watchdog-related event occured.

27
js/xpconnect/src/XPCComponents.cpp
View File

@ -3487,6 +3487,33 @@ nsXPCComponents_Utils::GetDOMClassInfo(const nsAString& aClassName,
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsXPCComponents_Utils::GetIncumbentGlobal(const Value &aCallback,
JSContext *aCx, Value *aOut)
{
nsCOMPtr<nsIGlobalObject> global = mozilla::dom::GetIncumbentGlobal();
RootedValue globalVal(aCx);
if (!global) {
globalVal = NullValue();
} else {
// Note: We rely on the wrap call for outerization.
globalVal = ObjectValue(*global->GetGlobalJSObject());
if (!JS_WrapValue(aCx, &globalVal))
return NS_ERROR_FAILURE;
}
// Invoke the callback, if passed.
if (aCallback.isObject()) {
Value ignored;
if (!JS_CallFunctionValue(aCx, nullptr, aCallback, 1, globalVal.address(), &ignored))
return NS_ERROR_FAILURE;
}
*aOut = globalVal;
return NS_OK;
}
NS_IMETHODIMP
nsXPCComponents_Utils::GetWatchdogTimestamp(const nsAString& aCategory, PRTime *aOut)
{

1
js/xpconnect/tests/chrome/chrome.ini
View File

@ -67,6 +67,7 @@ support-files =
[test_paris_weakmap_keys.xul]
[test_precisegc.xul]
[test_sandboxImport.xul]
[test_scriptSettings.xul]
[test_weakmap_keys_preserved.xul]
[test_weakmap_keys_preserved2.xul]
[test_weakref.xul]

125
js/xpconnect/tests/chrome/test_scriptSettings.xul Normal file
View File

@ -0,0 +1,125 @@
<?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"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=937317
-->
<window title="Mozilla Bug 937317"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
<!-- test results are displayed in the html:body -->
<body xmlns="http://www.w3.org/1999/xhtml">
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=937317"
target="_blank">Mozilla Bug 937317</a>
</body>
<!-- test code goes here -->
<iframe></iframe>
<script type="application/javascript">
<![CDATA[
/** Test for the script settings stack. **/
SimpleTest.waitForExplicitFinish();
const Cu = Components.utils;
Cu.import("resource://gre/modules/Promise.jsm");
var 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 Components.utils.getIncumbentGlobal(); };
Cu.evalInSandbox(gib.toSource(), sb);
iwin.eval(gib.toSource());
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)
deferred.resolve();
}
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.defer();
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.defer();
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.defer();
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.defer();
iwin.wrappedJSObject.timeoutFun2 = Cu.getIncumbentGlobal.bind(Cu, makeCallback(iwin, d, "cross-global setTimeout of scripted function"));
iwin.eval('let timeoutFun2Wrapper = function() { timeoutFun2(); }');
setTimeout(iwin.wrappedJSObject.timeoutFun2Wrapper, 0);
return d.promise;
}).then(function() {
// Try event listeners.
let d = Promise.defer();
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.defer();
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.defer();
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() {
SimpleTest.finish();
});
]]>
</script>
</window>