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<!doctype html>
<meta charset="utf-8">
<title>[Replaceable] setter throws TypeError if [[DefineOwnProperty]] fails</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="author" title="Alexey Shvayka" href="shvaikalesh@gmail.com">
<link rel="help" href="https://webidl.spec.whatwg.org/#Replaceable">
<body>
<script>
for (const key of ["self", "parent", "origin", "innerWidth"]) {
test(() => {
Object.defineProperty(window, key, { configurable: false });
assert_throws_js(TypeError, () => { window[key] = 1; });
const desc = Object.getOwnPropertyDescriptor(window, key);
assert_false("value" in desc);
assert_equals(typeof desc.get, "function");
assert_equals(typeof desc.set, "function");
assert_true(desc.enumerable);
assert_false(desc.configurable);
}, `window.${key} setter throws TypeError if called on non-configurable accessor property`);
}
for (const key of ["screen", "length", "event", "outerHeight"]) {
test(() => {
const { set } = Object.getOwnPropertyDescriptor(window, key);
Object.defineProperty(window, key, { value: 1, writable: false, configurable: false });
assert_throws_js(TypeError, () => { set.call(window, 2); });
const desc = Object.getOwnPropertyDescriptor(window, key);
assert_equals(desc.value, 1);
assert_false(desc.writable);
assert_true(desc.enumerable);
assert_false(desc.configurable);
}, `window.${key} setter throws TypeError if called on non-configurable non-writable data property`);
}
</script>
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