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'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 = require('functions-have-names')(); var runTests = require('./tests'); 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(); }); runTests(Number.isNaN, t); t.end(); });