text: import mongoose from 'mongoose';
  const chai = require('chai');
  chai.use(require('chai-url'));
  const MONGODB_URL = process.env.MONGODB_URL;
  chai.expect(MONGODB_URL).to.have.protocol('mongodb');
  
  mongoose.connect(MONGODB_URL, { useMongoClient: true });
  mongoose.Promise = global.Promise;
  
  export default mongoose;
  