go-types/test/isFloatTest.js

Type-checking utilities for JavaScript

"use strict";

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

suite("#isFloat", function () {

    test("true", function () {
        assert.equal(isFloat(0.1), true);
        assert.equal(isFloat(-0.1), true);
        assert.equal(isFloat(12.34), true);
        assert.equal(isFloat(new Number(12.34)), true);

        // these tests will fail due to the precision limitation of JavaScript numbers
//                assert.equal(isFloat(0.00000000001), true);
//                assert.equal(isFloat(123456789.00000000001), true);
    });

    test("false", function () {
        assert.equal(isFloat(0), false);
        assert.equal(isFloat(1.0), false);
        assert.equal(isFloat(-1.0), false);
        assert.equal(isFloat(new Number(1)), false);
    });
});