public async Task GetAllItems() { var dotaHelperData = new Mock <IDotaHelperData>(); var heroesProvider = new Mock <IHeroesProvider>(); var itemsProvider = new Mock <IItemsProvider>(); var mapper = new Mock <IMapper>(); var guideService = new GuidesService(dotaHelperData.Object, heroesProvider.Object, itemsProvider.Object, mapper.Object); await guideService.GetCreateModel(); itemsProvider.Verify(x => x.GetAllItemsAsync()); }