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<!doctype html>
<title>opener and embedded documents; using window.open()</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<iframe name=matchesastring></iframe>
<script>
async_test(t => {
const frame = document.querySelector("iframe");
frame.onload = t.step_func(() => {
// Firefox and Chrome/Safari load differently
if (frame.contentWindow.location.href === "about:blank") {
return;
}
// Test bits
assert_equals(frame.contentWindow.opener, window, "opener before setting it to null");
const openerDesc = Object.getOwnPropertyDescriptor(frame.contentWindow, "opener"),
openerGet = openerDesc.get;
assert_equals(openerGet(), window, "opener before setting it to null via directly invoking the getter");
frame.contentWindow.opener = null;
frame.contentWindow.opener = "immaterial";
assert_equals(openerGet(), null, "opener after setting it to null via directly invoking the getter");
assert_equals(frame.contentWindow.opener, "immaterial");
t.done();
});
window.open("/common/blank.html", "matchesastring");
});
</script>
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