mozilla-central/js/xpconnect/tests/unit/test_bug853709.js (file symbol)

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function setupChromeSandbox() {
this.chromeObj = {a: 2 };
this.chromeArr = [4, 2, 1];
}
function checkDefineThrows(sb, obj, prop, desc) {
var result = Cu.evalInSandbox('(function() { try { Object.defineProperty(' + obj + ', "' + prop + '", ' + desc.toSource() + '); return "nothrow"; } catch (e) { return e.toString(); }})();', sb);
Assert.notEqual(result, 'nothrow');
Assert.ok(!!/denied|prohibited/.exec(result));
Assert.ok(result.includes(prop)); // Make sure the prop name is in the error message.
}
function run_test() {
var chromeSB = new Cu.Sandbox(this);
var contentSB = new Cu.Sandbox('http://www.example.org');
Cu.evalInSandbox('(' + setupChromeSandbox.toSource() + ')()', chromeSB);
contentSB.chromeObj = chromeSB.chromeObj;
contentSB.chromeArr = chromeSB.chromeArr;
Assert.equal(Cu.evalInSandbox('chromeObj.a', contentSB), undefined);
try {
Cu.evalInSandbox('chromeArr[1]', contentSB);
Assert.ok(false);
} catch (e) { Assert.ok(/denied|insecure/.test(e)); }
checkDefineThrows(contentSB, 'chromeObj', 'a', {get: function() { return 2; }});
checkDefineThrows(contentSB, 'chromeObj', 'a', {configurable: true, get: function() { return 2; }});
checkDefineThrows(contentSB, 'chromeObj', 'b', {configurable: true, get: function() { return 2; }, set: function() {}});
checkDefineThrows(contentSB, 'chromeArr', '1', {configurable: true, get: function() { return 2; }});
}