test_bug872772.js - mozsearch

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function run_test() {

  // Make a content sandbox with an Xrayable object.

  // NB: We use an nsEP here so that we can have access to Components, but still

  // have Xray behavior from this scope.

  var contentSB = new Cu.Sandbox(['http://www.google.com'],

                                 { wantGlobalProperties: ["XMLHttpRequest"] });

  // Make an XHR in the content sandbox.

  Cu.evalInSandbox('xhr = new XMLHttpRequest();', contentSB);

  // Make sure that waivers can be set as Xray expandos.

  var xhr = contentSB.xhr;

  Assert.ok(Cu.isXrayWrapper(xhr));

  xhr.unwaivedExpando = xhr;

  Assert.ok(Cu.isXrayWrapper(xhr.unwaivedExpando));

  var waived = xhr.wrappedJSObject;

  Assert.ok(!Cu.isXrayWrapper(waived));

  xhr.waivedExpando = waived;

  Assert.ok(!Cu.isXrayWrapper(xhr.waivedExpando));

  // Try the same thing for getters/setters, even though that's kind of

  // contrived.

  Cu.evalInSandbox('function f() {}', contentSB);

  var f = contentSB.f;

  var fWaiver = Cu.waiveXrays(f);

  Assert.ok(f != fWaiver);

  Assert.ok(Cu.unwaiveXrays(fWaiver) === f);

  Object.defineProperty(xhr, 'waivedAccessors', {get: fWaiver, set: fWaiver});

  var desc = Object.getOwnPropertyDescriptor(xhr, 'waivedAccessors');

  Assert.ok(desc.get === fWaiver);

  Assert.ok(desc.set === fWaiver);