I finally figured it out! To mock a ons-navigator do the following: //your code here (coffeScript) dom = "<ons-navigator var='pageNavigator'></ons-navigator>"; navigatorDOM = @$compile(dom)(@$scope); new @NavigatorView(@$scope, navigatorDOM, @controller) spyOn(pageNavigator, 'pushPage').and.callThrough() @controller.showEvent(event) expect(pageNavigator.pushPage).toHaveBeenCalled() Now I can finally write more unit tests! I hope this helps somebody else, because e2e is nice and fun but unit tests are important as well. Cheers

Hi I would love to hear your thoughts about petrol https://github.com/MGMonge/petrol

Just looking for the same thing run in the browser, using ES6 classes, systemJS and Babel-plugin transpiler. Have you by any chance written that promised article?