I have two Models which I am testing in individual files and in each file I am using beforeEach to clear the DB and seed the DB. I am also using afterEach to drop the DB and close the connection to MongoDB.

I am getting a MongoDB error for a duplicate key of my users so it seems that the beforeEach isn't running perfectly beforeEach test. If I run the files isolated then no issues. It is only when I run the whole test suite.

user.test.js

const mongoose = require('mongoose');
const request = require('supertest');
const app = require('../app');

const User = require('../models/user.model');
const userData = require('../db/data/userData');

// Valid User for Loggin In
// {
//  username: 'Bcrypt User',
//  password: 'YECm9jCO8b',
// };

beforeEach((done) => {
  mongoose.connect(process.env.DB_URI, () => {
    const seedDB = async () => {
        await User.deleteMany({});
        await User.insertMany(userData);
    };

    seedDB().then(() => {
        done();
    });
  });
});

afterEach((done) => {
  mongoose.connection.db.dropDatabase(() => {
    mongoose.connection.close(() => done());
  });
});

message.test.js

const mongoose = require('mongoose');
const request = require('supertest');
const app = require('../app');

const User = require('../models/user.model');
const userData = require('../db/data/userData');

const messageData = require('../db/data/messageData');
const Message = require('../models/message.model');

const validUserAccount = {
  username: 'Bcrypt User',
  password: 'YECm9jCO8b',
};

beforeEach((done) => {
  mongoose.connect(process.env.DB_URI, () => {
    const seedDB = async () => {
        await User.deleteMany({});
        await User.insertMany(userData);
        await Message.deleteMany({});
        await Message.insertMany(messageData);
    };

    seedDB().then(() => {
        done();
    });
  });
});

afterEach((done) => {
  mongoose.connection.db.dropDatabase(() => {
    mongoose.connection.close(() => done());
  });
});

So far I have tried using a jest.config.js and also tried add config to package.json but can't seem to figure out a global file to run before each