mirror of https://github.com/tc39/test262.git
43 lines
1002 B
JavaScript
43 lines
1002 B
JavaScript
// Copyright (C) 2024 André Bargull. 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-object-environment-records-getbindingvalue-n-s
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description: >
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Binding deleted when retrieving unscopables.
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info: |
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9.1.1.2.6 GetBindingValue ( N, S )
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1. Let bindingObject be envRec.[[BindingObject]].
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2. Let value be ? HasProperty(bindingObject, N).
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3. If value is false, then
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a. If S is false, return undefined; otherwise throw a ReferenceError exception.
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...
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flags: [noStrict]
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features: [Symbol.unscopables]
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---*/
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var unscopablesCalled = 0;
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var env = {
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binding: 0,
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get [Symbol.unscopables]() {
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unscopablesCalled++;
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delete env.binding;
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return null;
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}
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};
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var result = null;
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with (env) {
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assert.throws(ReferenceError, function() {
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"use strict";
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result = binding;
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});
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}
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assert.sameValue(unscopablesCalled, 1, "get [Symbol.unscopables] called once");
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assert.sameValue(result, null, "result not modified");
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