gecko-dev/js/xpconnect/tests/chrome/test_APIExposer.xul

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<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
type="text/css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=634156
-->
<window title="Testing API exposing capabilities"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script type="application/javascript"
src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<!-- 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=634156"
target="_blank">Mozilla Bug 634156</a>
</body>
<!-- test code goes here -->
<script type="application/javascript"><![CDATA[
const Cu = Components.utils;
var sandbox = new Cu.Sandbox("about:blank");
sandbox.ok = ok;
sandbox.is = is;
Cu.evalInSandbox("Object.defineProperty(Object.prototype, 'getProp', { get: function() { throw 'FAIL: called getter' }, set: function() { throw 'FAIL: called setter'; } })", sandbox);
var obj = Cu.createObjectIn(sandbox);
is(obj, Cu.waiveXrays(obj), "createObjectIn waives");
is(Object.getPrototypeOf(obj), Cu.waiveXrays(Cu.evalInSandbox("Object.prototype", sandbox)),
"Object is a sandbox object");
function genPropDesc(value) {
return { enumerable: true, configurable: true, writable: true,
value: value };
}
const props = {
'getProp': genPropDesc(function() { ok(true, "called prop that shadowed a getter"); }),
'argument': genPropDesc(function(arg) { is(arg, 42, "can pass arguments through"); }),
'returnval': genPropDesc(function() { return 42; })
};
Object.defineProperties(obj, props);
Cu.makeObjectPropsNormal(obj);
sandbox.api = obj;
Cu.evalInSandbox("ok(Object.getPrototypeOf(api) === Object.prototype, 'we have the object we expected'); \
api.getProp(); api.argument(42); is(api.returnval(), 42, 'return value was correct');\
ok(typeof api.getProp === 'function', 'functions are functions');\
ok(Object.getPrototypeOf(api.getProp) === Function.prototype, 'functions come from our scope');", sandbox);
]]></script>
</window>