<!DOCTYPE html>
<meta charset="utf-8">
<title>window.opener setter throws TypeError if [[DefineOwnProperty]] fails</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/browsers.html#dom-opener">

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>

<body>
<script>
test(() => {
    const { set } = Object.getOwnPropertyDescriptor(window, "opener");
    Object.defineProperty(window, "opener", { value: 1, writable: false, configurable: false });
    assert_throws(new TypeError, () => { set.call(window, 2); });

    const desc = Object.getOwnPropertyDescriptor(window, "opener");
    assert_equals(desc.value, 1);
    assert_false(desc.writable);
    assert_true(desc.enumerable);
    assert_false(desc.configurable);
}, "window.opener setter throws TypeError if called on non-configurable non-writable data property");
</script>