navy/lib/util/__tests__/get-lan-ip.js

Quick and powerful development environments using Docker and Docker Compose

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _chai = require("chai");
var _sinon = _interopRequireDefault(require("sinon"));
var _dns = _interopRequireDefault(require("dns"));
var _os = _interopRequireDefault(require("os"));
var _getLanIp = require("../get-lan-ip");
/* eslint-env mocha */

describe('get-lan-ip', function () {
  describe('getLANIP', function () {
    let sandbox;
    beforeEach(function () {
      sandbox = _sinon.default.createSandbox();
    });
    afterEach(function () {
      sandbox.restore();
    });
    it('should resolve with the looked-up address for the host name', async function () {
      sandbox.stub(_os.default, 'hostname').returns('my-laptop.local');
      const dnsStub = sandbox.stub(_dns.default, 'lookup').callsFake((host, opts, cb) => {
        cb(null, '10.0.0.42');
      });
      const result = await (0, _getLanIp.getLANIP)();
      (0, _chai.expect)(result).to.equal('10.0.0.42');
      (0, _chai.expect)(dnsStub.calledOnce).to.equal(true);
      (0, _chai.expect)(dnsStub.firstCall.args[0]).to.equal('my-laptop.local');
      (0, _chai.expect)(dnsStub.firstCall.args[1]).to.equal(null);
    });
    it('should reject if dns.lookup fails', async function () {
      sandbox.stub(_os.default, 'hostname').returns('unknown.local');
      const lookupError = new Error('lookup failed');
      sandbox.stub(_dns.default, 'lookup').callsFake((host, opts, cb) => {
        cb(lookupError);
      });
      let caught;
      try {
        await (0, _getLanIp.getLANIP)();
      } catch (err) {
        caught = err;
      }
      (0, _chai.expect)(caught).to.equal(lookupError);
    });
  });
});