@spalger/kibana/src/ui/public/utils/__tests__/cidr_mask.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

var CidrMask = require('ui/utils/CidrMask');
var expect = require('expect.js');

describe('CidrMask', function () {
  it('should throw errors with invalid CIDR masks', function () {
    expect(function () {
      new CidrMask();
    }).to.throwError();

    expect(function () {
      new CidrMask('');
    }).to.throwError();

    expect(function () {
      new CidrMask('hello, world');
    }).to.throwError();

    expect(function () {
      new CidrMask('0.0.0.0');
    }).to.throwError();

    expect(function () {
      new CidrMask('0.0.0.0/0');
    }).to.throwError();

    expect(function () {
      new CidrMask('0.0.0.0/33');
    }).to.throwError();

    expect(function () {
      new CidrMask('256.0.0.0/32');
    }).to.throwError();

    expect(function () {
      new CidrMask('0.0.0.0/32/32');
    }).to.throwError();

    expect(function () {
      new CidrMask('1.2.3/1');
    }).to.throwError();
  });

  it('should correctly grab IP address and prefix length', function () {
    var mask = new CidrMask('0.0.0.0/1');
    expect(mask.initialAddress.toString()).to.be('0.0.0.0');
    expect(mask.prefixLength).to.be(1);

    mask = new CidrMask('128.0.0.1/31');
    expect(mask.initialAddress.toString()).to.be('128.0.0.1');
    expect(mask.prefixLength).to.be(31);
  });

  it('should calculate a range of IP addresses', function () {
    var mask = new CidrMask('0.0.0.0/1');
    var range = mask.getRange();
    expect(range.from.toString()).to.be('0.0.0.0');
    expect(range.to.toString()).to.be('127.255.255.255');

    mask = new CidrMask('1.2.3.4/2');
    range = mask.getRange();
    expect(range.from.toString()).to.be('0.0.0.0');
    expect(range.to.toString()).to.be('63.255.255.255');

    mask = new CidrMask('67.129.65.201/27');
    range = mask.getRange();
    expect(range.from.toString()).to.be('67.129.65.192');
    expect(range.to.toString()).to.be('67.129.65.223');
  });

  it('toString()', function () {
    var mask = new CidrMask('.../1');
    expect(mask.toString()).to.be('0.0.0.0/1');

    mask = new CidrMask('128.0.0.1/31');
    expect(mask.toString()).to.be('128.0.0.1/31');
  });
});