How to create a connection to mongobd while running unit test

[simo97]

Hi, I have a project running with Mongodb as a db backend, I would like to add a test suite, I saw this article https://medium.com/codechef-vit/integration-testing-for-express-mongoose-app-44390d29bb2 explaining how to perform such test with Jest and express.

There is a specific place where they define the connection to MongoDB for each test. I want to perform the same thing but I am a bit stuck on how to achieve that.
Here is how I establish Mongo connection

//setup Mongo connection
    {
      /** @type {import('App/Services/MongoService')} */
      const client = this.app.container.use('Workbud/Services/MongoService')
      await client.connect()
    }

The mongo service contains all the necessary code to load credentials and connect to mongodb.
is there a way to overwrite this when making the test setup?

I hope my question was clear enough, I can elaborate if needed, thank you.