test.js

var Code = require('code')
var Lab = require('lab')

var isPositiveInteger = require('../index.js')
var isSafePositiveInteger = isPositiveInteger.isSafePositiveInteger

var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991

var lab = exports.lab = Lab.script()
var describe = lab.describe
var it = lab.it
var expect = Code.expect

describe('is-positive-integer', function () {
  it('should return true for positive integers', function (done) {
    expect(isPositiveInteger(1)).to.equal(true)
    expect(isPositiveInteger(10)).to.equal(true)
    expect(isPositiveInteger(100)).to.equal(true)
    expect(isPositiveInteger(1000)).to.equal(true)
    expect(isPositiveInteger(90071992555)).to.equal(true)
    expect(isPositiveInteger(999999999999)).to.equal(true)
    expect(isPositiveInteger(MAX_SAFE_INTEGER)).to.equal(true)
    expect(isPositiveInteger(Number.MAX_VALUE)).to.equal(true)
    expect(isPositiveInteger(new Number(12))).to.equal(true)
    done()
  })

  it('should return false for negative integers or zero', function (done) {
    expect(isPositiveInteger(0)).to.equal(false)
    expect(isPositiveInteger(-1)).to.equal(false)
    expect(isPositiveInteger(-10)).to.equal(false)
    expect(isPositiveInteger(-100)).to.equal(false)
    expect(isPositiveInteger(-1000)).to.equal(false)
    expect(isPositiveInteger(new Number(0))).to.equal(false)
    expect(isPositiveInteger(new Number(-12))).to.equal(false)
    done()
  })

  it('should return false for floats', function (done) {
    expect(isPositiveInteger(1.1)).to.equal(false)
    expect(isPositiveInteger(10.1)).to.equal(false)
    expect(isPositiveInteger(100.1)).to.equal(false)
    expect(isPositiveInteger(1000.1)).to.equal(false)
    expect(isPositiveInteger(-1.1)).to.equal(false)
    expect(isPositiveInteger(-10.1)).to.equal(false)
    expect(isPositiveInteger(-100.1)).to.equal(false)
    expect(isPositiveInteger(-1000.1)).to.equal(false)
    expect(isPositiveInteger(new Number(12.45))).to.equal(false)
    done()
  })

  it('should return false for others', function (done) {
    expect(isPositiveInteger(Infinity)).to.equal(false)
    expect(isPositiveInteger({})).to.equal(false)
    expect(isPositiveInteger([])).to.equal(false)
    expect(isPositiveInteger('10')).to.equal(false)
    expect(isPositiveInteger('what')).to.equal(false)
    expect(isPositiveInteger(/what/)).to.equal(false)
    expect(isPositiveInteger(null)).to.equal(false)
    expect(isPositiveInteger(undefined)).to.equal(false)
    expect(isPositiveInteger(true)).to.equal(false)
    expect(isPositiveInteger({ valueOf: function () { return 42 } })).to.equal(false)
    expect(isPositiveInteger(Number.NaN)).to.equal(false)
    done()
  })

  describe('isSafePositiveInteger', function() {
    it('should return true for positive integers', function (done) {
      expect(isSafePositiveInteger(1)).to.equal(true)
      expect(isSafePositiveInteger(10)).to.equal(true)
      expect(isSafePositiveInteger(100)).to.equal(true)
      expect(isSafePositiveInteger(1000)).to.equal(true)
      expect(isSafePositiveInteger(90071992555)).to.equal(true)
      expect(isSafePositiveInteger(999999999999)).to.equal(true)
      expect(isSafePositiveInteger(MAX_SAFE_INTEGER)).to.equal(true)
      expect(isSafePositiveInteger(Number.MAX_VALUE)).to.equal(false)
      done()
    })
  })
})