setup-node/node_modules/universal-user-agent/test/smoke-test.js

// make tests run in both Node & Express
if (!global.cy) {
  const chai = require('chai')
  const sinon = require('sinon')
  const sinonChai = require('sinon-chai')
  chai.use(sinonChai)
  global.expect = chai.expect

  let sandbox
  beforeEach(() => {
    sandbox = sinon.createSandbox()
    global.cy = {
      stub: function () {
        return sandbox.stub.apply(sandbox, arguments)
      },
      log () {
        console.log.apply(console, arguments)
      }
    }
  })

  afterEach(() => {
    sandbox.restore()
  })
}

const getUserAgent = require('..')

describe('smoke', () => {
  it('works', () => {
    expect(getUserAgent()).to.be.a('string')
    expect(getUserAgent().length).to.be.above(10)
  })

  if (!process.browser) { // test on node only
    const proxyquire = require('proxyquire').noCallThru()
    it('works around wmic error on Windows (#5)', () => {
      const getUserAgent = proxyquire('..', {
        'os-name': () => {
          throw new Error('Command failed: wmic os get Caption')
        }
      })

      expect(getUserAgent()).to.equal('Windows <version undetectable>')
    })

    it('does not swallow unexpected errors', () => {
      const getUserAgent = proxyquire('..', {
        'os-name': () => {
          throw new Error('oops')
        }
      })

      expect(getUserAgent).to.throw('oops')
    })
  }
})