File: opener-string.window.js

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file content (14 lines) | stat: -rw-r--r-- 674 bytes parent folder | download | duplicates (20) 
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test(t => {
  const popup = window.open();
  t.add_cleanup(() => popup.close());
  assert_equals(popup.opener, self, "The opener of the popup is me");
  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, undefined);

  popup.opener = "blah";
  assert_equals(popup.opener, "blah", "The popup's opener is now a string");
  assert_equals(Object.getOwnPropertyDescriptor(popup, "opener").writable, true);

  const openerGetter = Object.getOwnPropertyDescriptor(self, "opener").get;
  const popupOpener = openerGetter.call(popup);
  assert_equals(popupOpener, self, "The underlying opener of the popup is still me");
}, "Setting popup.opener to a string");