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32 lines
895 B
JavaScript
32 lines
895 B
JavaScript
// Copyright (C) 2016 the V8 project authors. 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-preventextensions
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description: >
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Throws if trap is not callable (honoring the Realm of the current execution
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context)
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info: |
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[[PreventExtensions]] ( )
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...
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1. Let handler be the value of the [[ProxyHandler]] internal slot of O.
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...
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5. Let trap be GetMethod(handler, "preventExtensions").
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...
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7.3.9 GetMethod (O, P)
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...
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2. Let func be GetV(O, P).
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5. If IsCallable(func) is false, throw a TypeError exception.
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...
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features: [cross-realm, Proxy]
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---*/
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var OProxy = $262.createRealm().global.Proxy;
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var p = new OProxy({}, {
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preventExtensions: {}
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});
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assert.throws(TypeError, function() {
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Object.preventExtensions(p);
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});
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