overleaf/services/filestore/test/unit/js/SettingsTests.js

const chai = require('chai')
const { expect } = chai

describe('Settings', function() {
  describe('s3', function() {
    it('should use JSONified env var if present', function() {
      const s3Settings = {
        bucket1: {
          auth_key: 'bucket1_key',
          auth_secret: 'bucket1_secret'
        }
      }
      process.env.S3_BUCKET_CREDENTIALS = JSON.stringify(s3Settings)

      const settings = require('settings-sharelatex')
      expect(settings.filestore.s3BucketCreds).to.deep.equal(s3Settings)
    })
  })
})