| // Copyright (c) 2014 Ryan Lewis. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-number.isnan |
| description: > |
| Return false if argument is not Number |
| info: | |
| Number.isNaN ( number ) |
| |
| 1. If Type(number) is not Number, return false. |
| [...] |
| features: [Symbol] |
| ---*/ |
| |
| assert.sameValue(Number.isNaN("NaN"), false, "string"); |
| assert.sameValue(Number.isNaN([NaN]), false, "[NaN]"); |
| assert.sameValue(Number.isNaN(new Number(NaN)), false, "Number object"); |
| assert.sameValue(Number.isNaN(false), false, "false"); |
| assert.sameValue(Number.isNaN(true), false, "true"); |
| assert.sameValue(Number.isNaN(undefined), false, "undefined"); |
| assert.sameValue(Number.isNaN(null), false, "null"); |
| assert.sameValue(Number.isNaN(Symbol("1")), false, "symbol"); |
| assert.sameValue(Number.isNaN(), false, "no arg"); |