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30 lines
718 B
JavaScript
30 lines
718 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: 15.2.3.6-4-24
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description: >
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Object.defineProperty - 'name' is own data property that overrides
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an inherited data property (8.12.9 step 1)
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---*/
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var proto = {};
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Object.defineProperty(proto, "foo", {
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value: 12,
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configurable: true
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});
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var ConstructFun = function() {};
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ConstructFun.prototype = proto;
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var obj = new ConstructFun();
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Object.defineProperty(obj, "foo", {
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value: 11,
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configurable: false
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});
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assert.throws(TypeError, function() {
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Object.defineProperty(obj, "foo", {
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configurable: true
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});
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});
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assert.sameValue(obj.foo, 11, 'obj.foo');
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