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Bug 856067 - Waive Xrays when SpecialPowers encounters an Opaque XrayWrapper. r=gabor

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This commit is contained in:
Bobby Holley 2014-07-14 10:09:06 -07:00
parent 65bed4527b
commit a8b3c456f1
1 changed files with 8 additions and 1 deletions
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9
testing/specialpowers/content/specialpowersAPI.js
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@ -98,9 +98,16 @@ function isObjectOrArray(obj) {
// security in general, but tends to break tests that try to pass object
// literals into SpecialPowers. So we waive [[Object]] and [[Array]]
// instances before inspecting properties.
//
// * When we don't have meaningful Xray semantics, we create an Opaque
// XrayWrapper for security reasons. For test code, we generally want to see
// through that sort of thing.
function waiveXraysIfAppropriate(obj, propName) {
if (propName == 'toString' || isObjectOrArray(obj))
if (propName == 'toString' || isObjectOrArray(obj) ||
/Opaque/.test(Object.prototype.toString.call(obj)))
{
return XPCNativeWrapper.unwrap(obj);
}
return obj;
}