mirror of https://github.com/tc39/test262.git
46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-proxy-object-internal-methods-and-internal-slots-hasproperty-p
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description: >
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If "has" trap is null or undefined, [[HasProperty]] call is properly
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forwarded to [[ProxyTarget]] (which is also a Proxy object).
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info: |
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[[HasProperty]] ( P )
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[...]
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5. Let target be O.[[ProxyTarget]].
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6. Let trap be ? GetMethod(handler, "has").
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7. If trap is undefined, then
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a. Return ? target.[[HasProperty]](P).
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features: [Proxy, Reflect]
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---*/
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var plainObject = {
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get 0() {
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return 1;
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},
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foo: 2,
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set bar(_value) {},
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};
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var plainObjectTarget = new Proxy(plainObject, {});
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var plainObjectProxy = new Proxy(plainObjectTarget, {
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get: undefined,
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});
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assert(0 in Object.create(plainObjectProxy));
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assert("foo" in plainObjectProxy);
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assert(Reflect.has(plainObjectProxy, "bar"));
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var arrayTarget = new Proxy([1, 2], {});
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var arrayProxy = new Proxy(arrayTarget, {
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get: undefined,
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});
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assert("length" in Object.create(arrayProxy));
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assert("1" in arrayProxy);
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assert(!("2" in arrayProxy));
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