go-types/test/isNumberTest.js

Type-checking utilities for JavaScript

"use strict";

var assert = require("chai").assert;
var isNumber = require("../src/isNumber");

suite("#isNumber", function () {

    test("true", function () {
        assert.equal(isNumber(0), true);
        assert.equal(isNumber(-0.1), true);
        assert.equal(isNumber(new Number(1)), true);
        assert.equal(isNumber(Number.MAX_VALUE), true);
        assert.equal(isNumber(Number.MIN_VALUE), true);
        assert.equal(isNumber(Number.POSITIVE_INFINITY), true);
        assert.equal(isNumber(Number.NEGATIVE_INFINITY), true);
        assert.equal(isNumber(Number.NaN), true);
    });

    test("false", function () {
        assert.equal(isNumber(), false);
        assert.equal(isNumber(undefined), false);
        assert.equal(isNumber(null), false);
        assert.equal(isNumber(false), false);
        assert.equal(isNumber("0"), false);
        assert.equal(isNumber(Number), false);
        assert.equal(isNumber({}), false);
        assert.equal(isNumber([]), false);
    });
});