mirror of https://github.com/tc39/test262.git
48 lines
1.2 KiB
JavaScript
48 lines
1.2 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-set-p-v-receiver
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description: >
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If "set" trap is null or undefined, [[Set]] 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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[[Set]] ( P, V, Receiver )
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[...]
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5. Let target be O.[[ProxyTarget]].
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6. Let trap be ? GetMethod(handler, "set").
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7. If trap is undefined, then
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a. Return ? target.[[Set]](P, V, Receiver).
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features: [Proxy, Reflect]
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---*/
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var barValue;
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var plainObject = {
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get foo() {},
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set bar(value) {
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barValue = value;
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},
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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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plainObjectProxy.bar = 1;
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assert.sameValue(barValue, 1);
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assert.throws(TypeError, function() {
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"use strict";
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plainObjectProxy.foo = 2;
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});
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var regExp = /(?:)/g;
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var regExpTarget = new Proxy(regExp, {});
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var regExpProxy = new Proxy(regExpTarget, {});
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assert(!Reflect.set(regExpProxy, "global", true));
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regExpProxy.lastIndex = 1;
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assert.sameValue(regExp.lastIndex, 1);
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