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<!DOCTYPE html>
<meta charset="utf-8">
<title>[[DefineOwnProperty]] on a WindowProxy forwards to OrdinaryDefineOwnProperty for same-origin objects</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/window-object.html#windowproxy-defineownproperty">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
"use strict";
for (const key of ["window", "document", "location", "top"]) {
const { get, set } = Object.getOwnPropertyDescriptor(window, key);
test(() => {
Object.defineProperty(window, key, {});
assert_true(Reflect.defineProperty(window, key, { configurable: false }), "[[Configurable]]: false");
Object.defineProperty(window, key, { enumerable: true });
assert_true(Reflect.defineProperty(window, key, { get }), "[[Get]]: unchanged");
Object.defineProperty(window, key, { set });
assert_true(Reflect.defineProperty(window, key, { get, set }), "[[Get]]: unchanged, [[Set]]: unchanged");
Object.defineProperty(window, key, { get, set, enumerable: true, configurable: false });
}, `[[DefineOwnProperty]] success: "${key}"`);
test(() => {
assert_throws_js(TypeError, () => {
Object.defineProperty(window, key, { configurable: true });
}, "[[Configurable]]: true");
assert_false(Reflect.defineProperty(window, key, { enumerable: false }), "[[Enumerable]]: false");
assert_throws_js(TypeError, () => {
Object.defineProperty(window, key, { get() {}, set });
}, "[[Get]]: changed, [[Set]]: unchanged");
assert_false(Reflect.defineProperty(window, key, { get, set() {} }), "[[Get]]: unchanged, [[Set]]: changed");
assert_throws_js(TypeError, () => {
Object.defineProperty(window, key, { writable: false, configurable: true });
}, "[[Writable]]: false, [[Configurable]]: true");
assert_false(Reflect.defineProperty(window, key, { value: window[key], enumerable: true }), "[[Value]], [[Enumerable]]: true");
}, `[[DefineOwnProperty]] failure: "${key}"`);
}
</script>
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