ec49a09bbbPR-URL: https://github.com/nodejs/node/pull/61316 Reviewed-By: Matthew Aitken <maitken033380023@gmail.com> Reviewed-By: Jason Zhang <xzha4350@gmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: Mattias Buelens <mattias@buelens.com>
35 lines
1.3 KiB
HTML
35 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>All attributes accessors are unique function objects</title>
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<link rel="help" href="https://webidl.spec.whatwg.org/#idl-interface-mixins">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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"use strict";
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test(() => {
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const seenPrototypes = new WeakSet([Function.prototype]);
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const seenFunctions = new WeakMap();
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for (const windowKey of Object.getOwnPropertyNames(window)) {
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const windowValue = window[windowKey];
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if (typeof windowValue !== "function") continue;
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const {prototype} = windowValue;
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if (!prototype || seenPrototypes.has(prototype)) continue;
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seenPrototypes.add(prototype);
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for (const key of Object.getOwnPropertyNames(prototype)) {
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const assert_not_seen = (fn, field) => {
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const fnInfo = `${windowKey}.${key}.${field}`;
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assert_equals(seenFunctions.get(fn), undefined, fnInfo);
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seenFunctions.set(fn, fnInfo);
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};
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const desc = Object.getOwnPropertyDescriptor(prototype, key);
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if (desc.get) assert_not_seen(desc.get, "[[Get]]");
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if (desc.set) assert_not_seen(desc.set, "[[Set]]");
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}
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}
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}, "For attributes, each copy of the accessor property has distinct built-in function objects for its getters and setters.");
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</script>
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