In memory mongoserver for jest

mongoserver.test.js

const MongodbMemoryServer = require('mongodb-memory-server').default
const mongoose = require('mongoose')
const opts = { useMongoClient: true } // remove this option if you use mongoose 5 and above
const Fixtures = require('node-mongodb-fixtures')

const RecruiterTeam = require('../../models/recruiter/recruiterteam').RecruiterTeam

const sinon = require('sinon')
const firebase = require('firebase-admin')

function stubFirebase() {
  sinon.stub(firebase, 'initializeApp', () => { })
  sinon.stub(firebase, 'auth', () => { return { createCustomToken: () => Promise.resolve('token') } })
  const ref = () => { return { set: () => { } } }
  sinon.stub(firebase, 'database', () => { return { ref } })
}

stubFirebase()

const api = require('../../api')

let mongoServer
let fixtures

// const fixtures = new Fixtures()

describe('sample test', () => {
  beforeAll(async () => {
    mongoServer = new MongodbMemoryServer()
    fixtures = new Fixtures()
    const mongoUri = await mongoServer.getConnectionString()
    console.log(mongoUri)
    await fixtures.connect(mongoUri)
    await fixtures.load()
    await mongoose.connect(mongoUri, opts, (err) => {
      if (err) console.error(err)
    })
    await api()
  })

  afterAll(async () => {
    await api.stop()
    await mongoose.disconnect()
    await fixtures.unload()
    await fixtures.disconnect()
    await mongoServer.stop()
  })

  it('should work', () => {
    expect(10).toMatchSnapshot()
  })
  it('should work 2', () => {
    expect(['blah', 123]).toMatchSnapshot()
  })

  it('should work 3', () => {
    expect({ foo: 'bar' }).toMatchSnapshot()
  })
  it('should count new users', async () => {
    const User = mongoose.model('User', new mongoose.Schema({ name: String }))
    const cnt = await User.count()
    expect(cnt).toEqual(0)
  })
  it('should find first recruiterteam', async () => {
    const teams = await RecruiterTeam.find()
    expect(teams[0].name).toMatchSnapshot()
  })
})