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// Copyright (C) 2016 The V8 Project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-isnan-number
es6id: 18.2.3
description: >
number argument is converted by ToNumber
info: |
isNaN (number)
1. Let num be ? ToNumber(number).
2. If num is NaN, return true.
3. Otherwise, return false.
---*/
assert.sameValue(isNaN("0"), false, "'0'");
assert.sameValue(isNaN(""), false, "the empty string");
assert.sameValue(isNaN("Infinity"), false, "'Infinity'");
assert.sameValue(isNaN("this is not a number"), true, "string");
assert.sameValue(isNaN(true), false, "true");
assert.sameValue(isNaN(false), false, "false");
assert.sameValue(isNaN([1]), false, "Object [1]");
assert.sameValue(isNaN([Infinity]), false, "Object [Infinity]");
assert.sameValue(isNaN([NaN]), true, "Object [NaN]");
assert.sameValue(isNaN(null), false, "null");
assert.sameValue(isNaN(undefined), true, "undefined");
assert.sameValue(isNaN(), true, "no arg");
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