const mongoose = require('../services/mongoose'); beforeAll(function(done) { mongoose.connection.on('open', function(err) { if (err) { return done(err); } return done(); }); }, 30000); beforeEach(async () => { await Promise.all( Object.keys(mongoose.connection.collections).map(collection => { return new Promise((resolve, reject) => { mongoose.connection.collections[collection].remove(function(err) { if (err) { return reject(err); } return resolve(); }); }); }) ); }); afterAll(async function() { await mongoose.disconnect(); });