Test startup code


Is there a way to create some code which will run before client tests will run.
Simply I want to extract this code:

import Enzyme from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

Enzyme.configure({ adapter: new Adapter() });

to write it once somewhere to avoid breaking DRY and I don’t want to rewrite this code in every test file.

I found some kind of solution.
Add to package.json attribute “testModule” which points to entry point of your tests.
My content of this file:

if (Meteor.isServer) {
  import './server.js';
} else if (Meteor.isClient) {
  import './client.js';

Then in client.js in tests folder I can add some preparation code and then import all client tests I need. Disadvantage is I must manually enter here every test file.