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