| 'use strict'; |
| |
| require('es5-shim'); |
| |
| var numberIsNaN = require('../'); |
| numberIsNaN.shim(); |
| |
| var test = require('tape'); |
| var defineProperties = require('define-properties'); |
| var isEnumerable = Object.prototype.propertyIsEnumerable; |
| var functionsHaveNames = function f() {}.name === 'f'; |
| |
| test('shimmed', function (t) { |
| t.equal(Number.isNaN.length, 1, 'Number.isNaN has a length of 1'); |
| t.test('Function name', { skip: !functionsHaveNames }, function (st) { |
| st.equal(Number.isNaN.name, 'isNaN', 'Number.isNaN has name "isNaN"'); |
| st.end(); |
| }); |
| |
| t.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) { |
| et.equal(false, isEnumerable.call(Number, 'isNaN'), 'Number.isNaN is not enumerable'); |
| et.end(); |
| }); |
| |
| require('./tests')(Number.isNaN, t); |
| |
| t.end(); |
| }); |