Global beforeEach/afterEach for ember qunit tests - ember.js

Question

My app stores some information about the current session in localStorage. Therefore I need my tests to clear localStorage before or after each single test throughout all test files. Is there a way to define a beforeEach or afterEach callback globally instead of on each test file?

Answer 1

We had wrapped ember-qunit's module, moduleFor and moduleForComponent for a nearly the same reason. And we are importing those wrappers instead of ember-qunit.
Another suggestion is to wrap localStorage with a service. Never access to localStorage except this service. So you can use a mock implementation of it in tests.
Updated:
How it is realised:
import { moduleFor, moduleForModel, test, only, setResolver } from 'ember-qunit';
import { moduleForComponent as qunitModuleForComponent } from 'ember-qunit';
function moduleForComponent(name, description, callbacks) {
//our implementation that wraps "qunitModuleForComponent"
//eg. init commonly used services vs.
}
export {
moduleFor,
moduleForComponent,
moduleForModel,
test,
only,
setResolver
};
Pros:
Prevents code duplication
Centralize unit test management
Easy to add new methods for custom needs, such as: moduleForValidatableComponent, moduleForLocalStorage
Cons:
ember-cli generates tests those are importing ember-qunit. Developers must change the import statements to these wrappers. It was sometimes forgotten. (When a test fails, developers remember that they need to change import statements.)
For some tests, wrapping is unnecessary.