public async Task SaveChanges()
{
var dotaHelperData = new Mock <IDotaHelperData>();
var users = new Mock <IDotaHelperRepository <DotaHelperUser> >();
var postedGuides = new Mock <List <Guide> >();
var user = new DotaHelperUser {
PostedGuides = postedGuides.Object
};
users.Setup(x => x.FindAsync(It.IsAny <string>())).Returns(Task.FromResult(user));
var userGuides = new Mock <IDotaHelperRepository <DotaHelperUserGuide> >();
var guides = new Mock <IGuideData>();
dotaHelperData.Setup(x => x.Users).Returns(users.Object);
dotaHelperData.Setup(x => x.Guides).Returns(guides.Object);
dotaHelperData.Setup(x => x.UserGuides).Returns(userGuides.Object);
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.AddGuide("1", new GuidePostDataModel());
dotaHelperData.Verify(x => x.SaveChangesAsync(), Times.Once);
}