mirror of https://github.com/tc39/test262.git
49 lines
1.2 KiB
JavaScript
49 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-get-p-receiver
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description: >
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If "get" trap is null or undefined, [[Get]] 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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[[Get]] ( P, 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, "get").
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7. If trap is undefined, then
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a. Return ? target.[[Get]](P, Receiver).
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features: [Proxy, Symbol]
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---*/
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var stringTarget = new Proxy(new String("str"), {});
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var stringProxy = new Proxy(stringTarget, {
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get: null,
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});
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assert.sameValue(stringProxy.length, 3);
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assert.sameValue(stringProxy[0], "s");
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assert.sameValue(stringProxy[4], undefined);
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var sym = Symbol();
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var target = new Proxy({}, {
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get: function(_target, key) {
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switch (key) {
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case sym: return 1;
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case "10": return 2;
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case "foo": return 3;
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}
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},
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});
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var proxy = new Proxy(target, {
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get: null,
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});
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assert.sameValue(proxy[sym], 1);
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assert.sameValue(proxy[10], 2);
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assert.sameValue(Object.create(proxy).foo, 3);
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assert.sameValue(proxy.bar, undefined);
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