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25 lines
651 B
JavaScript
25 lines
651 B
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: 15.2.3.7-6-a-119
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description: >
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Object.defineProperties - 'O' is an Array, 'P' is the length
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property of 'O', the [[Value]] field of 'desc' is absent, test
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TypeError is thrown when updating the [[Writable]] attribute of
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the length property from false to true (15.4.5.1 step 3.a.i)
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---*/
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var arr = [];
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Object.defineProperty(arr, "length", {
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writable: false
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});
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assert.throws(TypeError, function() {
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Object.defineProperties(arr, {
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length: {
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writable: true
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}
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});
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});
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