tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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opener-string.window.js (674B)

      1 test(t => {
      2  const popup = window.open();
      3  t.add_cleanup(() => popup.close());
      4  assert_equals(popup.opener, self, "The opener of the popup is me");
      5  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, undefined);
      6 
      7  popup.opener = "blah";
      8  assert_equals(popup.opener, "blah", "The popup's opener is now a string");
      9  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, true);
     10 
     11  const openerGetter = Object.getOwnPropertyDescriptor(self, "opener").get;
     12  const popupOpener = openerGetter.call(popup);
     13  assert_equals(popupOpener, self, "The underlying opener of the popup is still me");
     14 }, "Setting popup.opener to a string");