server.js

const express = require('express')
const bodyParser = require('body-parser')
const expressValidator = require('express-validator')
const routes = require('./routes')
const middlewares = require('./middlewares')
const errorHandlers = require('./middlewares/errorHandlers')
const isProduction = process.env.NODE_ENV === 'production'
const passport = require('passport')

const app = express()
require('./handlers/passport')

// ======================================
// # Middlewares
// ======================================
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({extended: true}))
app.use(expressValidator())
app.use(passport.initialize())
app.use(middlewares.camelcaseKeys)

// ======================================
// # Routes
// ======================================

app.use('/', routes)
app.use(errorHandlers.notFound)

if (isProduction) {
  app.use(errorHandlers.prodErrors)
} else {
  app.use(errorHandlers.devErrors)
}

module.exports = app

start.js

require('dotenv').config({ path: 'variables.env' })
const mongoose = require('mongoose')
const isProduction = process.env.NODE_ENV === 'production'
const port = isProduction ? 8765 : 4000
const database = isProduction ? process.env.MONGO_URL : process.env.MONGO_URL_LOCAL

mongoose.connect(database)
mongoose.Promise = global.Promise
mongoose.connection.on('error', (err) => {
  console.error(`🙅 🚫 🙅 🚫 🙅 🚫 🙅 🚫 → ${err.message}`)
})

require('./models/Course')
require('./models/User')

const app = require('./server')

app.listen(port, '127.0.0.1', () => {
  console.log('app listening on http://' + port)
})

test.js

import test from 'ava'
import mongoose from 'mongoose'
import request from 'supertest'
import { MongoDBServer } from 'mongomem'
import { createFixtures, dropFixtures } from '../../fixtures/'

const setupMongoose = async _ => {
  const db = new mongoose.Mongoose()
  db.Promise = global.Promise
  await db.connect(await MongoDBServer.getConnectionString())

  require('../../models/Course')
  require('../../models/User')
  
  for (const name of mongoose.modelNames()) {
    db.model(name, mongoose.model(name).schema)
  }

  return db
}

test.before('start server', async t => await MongoDBServer.start())

test.beforeEach(async t => {
  const db = await setupMongoose()


  const User = db.model('User')
  const Course = db.model('Course')
  await createFixtures(Course, User)

  const app = require('../../server')
  t.context.db = db
  t.context.app = app
})

test('Pass POST v1/users/testing', async t => {
  const { app } = t.context
  const res = await request(app)
    .post('/api/v1/users/testing')
    .send({
      email: 'testing@email.com'
    })
  t.is(res.status, 200)
})

test.after.always('cleanup', t => MongoDBServer.tearDown())