Not compatible with Ember 4+

[arthur5005]

Getting an error:

Error: Could not find module `@ember/application/deprecations` imported from `@ember/test-helpers`

Because of https://deprecations.emberjs.com/v3.x/#toc_old-deprecate-method-paths, you need to upgrade the @ember/test-helpers to the latest version, which has dealt with the deprecation

I'm currently forcing the resolutions on that package in my project.

  // yarn
  "resolutions": {
    "ember-mocha/@ember/test-helpers": "^2.6.0"
  }, 
  // npm
  "overrides": {
    "ember-mocha": {
      "@ember/test-helpers": "^2.6.0"
    }
  }