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21 lines
674 B
JavaScript
21 lines
674 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: 15.2.3.14-5-a-4
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description: >
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Object.keys - Verify that 'configurable' attribute of element of
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returned array is correct
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---*/
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var obj = { prop1: 100 };
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var array = Object.keys(obj);
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var desc = Object.getOwnPropertyDescriptor(array, "0");
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delete array[0];
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assert.sameValue(typeof array[0], "undefined", 'typeof array[0]');
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assert(desc.hasOwnProperty("configurable"), 'desc.hasOwnProperty("configurable") !== true');
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assert.sameValue(desc.configurable, true, 'desc.configurable');
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