39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var test = require('tape');
|
||
|
|
var isNumber = require('../');
|
||
|
|
var hasSymbols = require('has-symbols')();
|
||
|
|
|
||
|
|
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();
|
||
|
|
});
|