mongodb-memory-server | If you run tests | Testing library

i have a project that uses jest, i can run jest with npm test and it works if i dont set a preset.

I need the preset @shelf/jest-mongodb, and i get the error that is in the title of this post.

Here is my jest.config.js:

I am trying to write a sample application for POC of mongodb-memory-server but unfortunately its not working. I checked several links and blogs but seems like code working for all is not working for me. Jest test times out even after increasing timeout to 1 min. getConnectionString or getUrl both times out. I suspect this mongodb-memory-server never starts.

Following is DB Handler for tests

I am using Windows 10

Context: I have a back-end API application that I'm working on where I have series of tests for the API. The project is here: https://github.com/jeffnyman/devcamper_api. This project has a series of tests that I've been developing. As far as the test tooling, I'm using ChaiHttp, Jest, and mongodb-memory-server. I should probably note that this is my first real JavaScript project and I'm learning the test tooling as I go.

Problem: All of those tests were working great ... up until I added some geocoder functionality. Specifically, I added the node-geocoder package.

Error Condition:

I get the following error on some of my routes when the tests are run:

I want to create a in-memory database using mongodb-memory-server and mongoose. Can anyone show the correct way to do it.

I am trying to set up Authorisation in NestJs using Mongoose via a User Service. I'm getting the following errors when trying to Unit Test:

I understand that the UserModel is injected into the UsersService and needs to be resolved when using the UsersModule but I can't work out how to do this when creating the TestingModule. Please can someone shed some light on this for me?

Code is below, thanks:

USER MODULE

I'm new to Docker, and I've wanted try Dockerizing my node app.

I've tried following the directions on nodejs.org, but I've been getting errors on npm install.

Here is my Dockerfile:

I am making my first tentative steps into modern JS development, and to do so, I am writing an app, with the intention of running it on Mongo Stitch. I am trying to stick to TDD-ish development, partly because it is good practice, and partly because it is much easier to run things locally than in the Stitch environment.

I have a working Docker/Alpine environment, and it runs unit tests against Stitch functions fine using Jest. However, I am now writing functions where the conditionals/logic are in Mongo, so unit tests are not enough to protect against regressions.

My original plan was to spin up a MongoDB 4.0 instance in Docker Compose, and then work out how to connect to it in Jest. However, the Jest docs have pointed me to an in-memory MongoDB, which sounds pretty good. Unfortunately it seems non-trivial to set up, and I am bumping into a number of errors.

I am using Yarn to pull dependencies. Since this appears to compile some binaries, I wondered if my being on Alpine was complicating things (BusyBox builds tend to be a bit trickier). I have therefore swapped to Ubuntu. My Dockerfile is pretty simple:

I create a user schema using mongoose.

/src/server/models/User.ts: