public void CreateTest() { Subscriber subscriber = new Subscriber() { Id = new Guid() }; var unit = new MockUnitOfWork(); unit.MockRepository(); unit.MockCreateForRep(subscriber); var service = new SubscriberService(unit.Object); var res = service.Create(subscriber).GetAwaiter().GetResult(); Assert.NotNull(res); Assert.IsAssignableFrom <Subscriber>(res); }