mirror of https://github.com/tc39/test262.git
28 lines
986 B
JavaScript
Executable File
28 lines
986 B
JavaScript
Executable File
// Copyright (C) 2015 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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info: Mapped arguments object with non-configurable property
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description: >
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Mapping works when property is non-configurable, arguments property
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was not deleted. [[Delete]] operations throws TypeError if called
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from strict-mode code. Arguments property is changed with
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[[DefineOwnProperty]].
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flags: [noStrict]
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---*/
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function argumentsAndStrictDeleteDefineOwnProperty(a) {
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Object.defineProperty(arguments, "0", {configurable: false});
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// Precondition: Delete is unsuccessful and doesn't affect mapping.
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var args = arguments;
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assert.throws(TypeError, function() { "use strict"; delete args[0]; });
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assert.sameValue(a, 1);
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assert.sameValue(arguments[0], 1);
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Object.defineProperty(arguments, "0", {value: 2});
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assert.sameValue(a, 2);
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assert.sameValue(arguments[0], 2);
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}
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argumentsAndStrictDeleteDefineOwnProperty(1);
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