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- 'use strict';
- var test = require('tape');
- var isNumber = require('../');
- var hasSymbols = require('has-symbols/shams')();
- test('not Numbers', function (t) {
- t.notOk(isNumber(), 'undefined is not Number');
- t.notOk(isNumber(null), 'null is not Number');
- t.notOk(isNumber(false), 'false is not Number');
- t.notOk(isNumber(true), 'true is not Number');
- t.notOk(isNumber('foo'), 'string is not Number');
- t.notOk(isNumber([]), 'array is not Number');
- t.notOk(isNumber({}), 'object is not Number');
- t.notOk(isNumber(function () {}), 'function is not Number');
- t.notOk(isNumber(/a/g), 'regex literal is not Number');
- t.notOk(isNumber(new RegExp('a', 'g')), 'regex object is not Number');
- t.notOk(isNumber(new Date()), 'new Date() is not Number');
- t.end();
- });
- test('@@toStringTag', { skip: !hasSymbols || !Symbol.toStringTag }, function (t) {
- var fakeNumber = {
- toString: function () { return '7'; },
- valueOf: function () { return 42; }
- };
- fakeNumber[Symbol.toStringTag] = 'Number';
- t.notOk(isNumber(fakeNumber), 'fake Number with @@toStringTag "Number" is not Number');
- t.end();
- });
- test('Numbers', function (t) {
- t.ok(isNumber(42), 'number is Number');
- t.ok(isNumber(Object(42)), 'number object is Number');
- t.ok(isNumber(NaN), 'NaN is Number');
- t.ok(isNumber(Infinity), 'Infinity is Number');
- t.end();
- });
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