test_xray_named_element_access.js

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// See https://bugzilla.mozilla.org/show_bug.cgi?id=1273251

"use strict";

add_task(async function() {

  let webnav = Services.appShell.createWindowlessBrowser(false);

  let docShell = webnav.docShell;

  docShell.createAboutBlankDocumentViewer(null, null);

  let window = webnav.document.defaultView;

  let unwrapped = Cu.waiveXrays(window);

  window.document.body.innerHTML = '<div id="foo"></div>';

  equal(window.foo, undefined, "Should not have named X-ray property access");

  equal(typeof unwrapped.foo, "object", "Should always have non-X-ray named property access");

  webnav.close();

});