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e49d2661a8
The global isNaN is not precise at all, and Number.isNaN is an ES6 feature that makes it preferrable to use assert's sameValue for NaN values, as it handles it internally using the comparison.
34 lines
742 B
JavaScript
34 lines
742 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: 15.2.3.6-4-85
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description: >
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Object.defineProperty will not throw TypeError if
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name.configurable = false, name.writable = false, name.value = NaN
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and desc.value = NaN (8.12.9 step 10.a.ii.1)
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includes: [propertyHelper.js]
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---*/
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var obj = {};
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Object.defineProperty(obj, "foo", {
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value: NaN,
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writable: false,
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configurable: false
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});
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Object.defineProperty(obj, "foo", {
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value: NaN,
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writable: false,
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configurable: false
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});
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assert.sameValue(obj.foo, NaN);
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verifyNotWritable(obj, "foo");
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verifyNotEnumerable(obj, "foo");
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verifyNotConfigurable(obj, "foo");
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