Does mongo-unit work in docker containers?

[batmanhit]

No description provided.

[mikhail-angelov]

yes it does
ci is integrated with cycle-ci here, and it run tests inside docker container

[Philmod]

What do you have to install to make it work in a container?

[mebibou]

I am doing something like this:

// test/Dockerfile
FROM node:10.1.0

WORKDIR /app

COPY package.json /app/package.json
COPY package-lock.json /app/package-lock.json
RUN npm install

COPY . /app

CMD npm test

Then I can build the image using:

docker build -f test/Dockerfile -t my-test .

And run it using:

docker run --rm -v ${PWD}/src:/app/src -v ${PWD}/coverage:/app/coverage my-test:latest

The only annoying thing is, every time you run the tests you'll have to re-download the binaries for this library, maybe there is a way to cache it idk

[Philmod]

If you want to avoid the download every time, you could download the mongo during the docker build:

FROM node:8.11.1

ARG mongo_version=3.4.14

WORKDIR /usr/src/app

RUN npm install -g mongodb-download

RUN mongodb-download --version=${mongo_version}

COPY package.json /usr/src/app/package.json
RUN npm install
COPY . . 

CMD [ "npm", "test" ]

[mebibou]

@Philmod ah yes thanks for pointing me in the right direction, I instead create a little script

const { start, stop } = require('mongo-unit');

const run = async () => {
  await start();
  await stop();
};

run()
  .then(() => process.exit(0))
  .catch(err => {
    console.error(err);
    process.exit(1);
  });

And added RUN node script.js after RUN npm install and it works now without installing extra packages