mirror of https://github.com/tc39/test262.git
26 lines
868 B
JavaScript
26 lines
868 B
JavaScript
// Copyright (c) 2014 Ryan Lewis. 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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es6id: 20.1.2.4
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esid: sec-number.isnan
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description: >
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Return false if argument is not Number
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info: |
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Number.isNaN ( number )
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1. If Type(number) is not Number, return false.
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[...]
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features: [Symbol]
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---*/
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assert.sameValue(Number.isNaN("NaN"), false, "string");
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assert.sameValue(Number.isNaN([NaN]), false, "[NaN]");
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assert.sameValue(Number.isNaN(new Number(NaN)), false, "Number object");
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assert.sameValue(Number.isNaN(false), false, "false");
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assert.sameValue(Number.isNaN(true), false, "true");
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assert.sameValue(Number.isNaN(undefined), false, "undefined");
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assert.sameValue(Number.isNaN(null), false, "null");
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assert.sameValue(Number.isNaN(Symbol("1")), false, "symbol");
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assert.sameValue(Number.isNaN(), false, "no arg");
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