public void Init() { MockHelper.ConfigureContainer(); stockPropertiesService = MockRepository.GenerateMock <IStockPropertiesService>(); eventAggregator = ServiceLocator.Current.GetInstance <IEventAggregator>(); ServiceLocator.Current.Stub(x => x.GetInstance <IStockPropertiesService>()).Return(stockPropertiesService); ServiceLocator.Current.Stub(x => x.GetInstance <IStockProprtiesViewModel>()).Return(new StockProprtiesViewModel(eventAggregator, stockPropertiesService)); }