mirror of https://github.com/tc39/test262.git
50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
// Copyright (c) 2012 Ecma International. 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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es5id: 15.2.3.6-4-293-2
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description: >
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Object.defineProperty - 'O' is an Arguments object of a function
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that has formal parameters, 'name' is own data property of 'O'
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which is also defined in [[ParameterMap]] of 'O', test TypeError
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is thrown when updating the [[Value]] attribute value of 'name'
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which is defined as unwritable and non-configurable (10.6
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[[DefineOwnProperty]] step 4 and step 5b)
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includes: [propertyHelper.js]
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flags: [noStrict]
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---*/
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(function(a, b, c) {
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Object.defineProperty(arguments, "0", {
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value: 10,
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writable: false,
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enumerable: false,
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configurable: false
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});
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try {
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Object.defineProperty(arguments, "0", {
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value: 20
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});
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$ERROR("Expected an exception.");
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} catch (e) {
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if (!(e instanceof TypeError)) {
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$ERROR("Expected TypeError, got " + e);
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}
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verifyEqualTo(arguments, "0", 10);
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verifyNotWritable(arguments, "0");
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verifyNotEnumerable(arguments, "0");
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verifyNotConfigurable(arguments, "0");
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if (a !== 10) {
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$ERROR('Expected "a === 10", actually ' + a);
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}
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}
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}(0, 1, 2));
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