philipisapain

const SomeDependency = require('some-dependency')
const { TopLevelProcess } = require('./topLevelProcess')

describe('Stubbing a dependency passed to a constructor in an exported Node process', () => {
  it('works as you would expect', () => {
    const stubbedDependency = stub(new SomeDependency())
    
    new TopLevelProcess(stubbedDependency).start()
    
    expect(/* something to have happened when `start()` is called */)

philipisapain

const proxyquire = require('proxyquire')
const SomeDependency = require('some-dependency')

describe('Stubbing a dependency passed to a constructor in a Node process', () => {
  it('is not particularly elegant', () => {
    const stubbedDependency = stub(new SomeDependency())
    const StubbedDependencyConstructor = () => stubbedDependency
    
    proxyquire('./topLevelProcess', { 'some-dependency': StubbedDependencyConstructor })
    

philipisapain

const SomeDependency = require('some-dependency')

class TopLevelProcess {
  constructor (someDependency) { ... }
  start () { ... }
}

const process = new TopLevelProcess(new SomeDependency())
process.start()

philipisapain

const SomeDependency = require('some-dependency')

class TopLevelProcess {
  constructor (someDependency) { ... }
  start () { ... }
}

const isNodeProcess = require.main === module
if (isNodeProcess) {
  new TopLevelProcess(new SomeDependency()).start()

philipisapain

function (user, context, callback) {
  var namespace = 'https://tojs.io/';
  context.accessToken[namespace + 'user_authorization'] = {
    groups: user.app_metadata.groups,
    roles: user.app_metadata.roles,
    permissions: user.app_metadata.permissions
  };
  return callback(null, user, context);
}