public async void TestCreatePetAsync() { // Arrange AppDbContext appDbContext = AppDbContextMock.GetAppDbContext(); PetRepository petRepository = new PetRepository(appDbContext); UserRepository userRepository = new UserRepository(appDbContext); PetService petService = new PetService(petRepository, userRepository, new UnitOfWork(appDbContext)); appDbContext.Users.Add(new User { Id = 215, Name = "Michael" }); appDbContext.SaveChangesAsync().Wait(); // Act var pet = await petService.CreateAsync(new Cat { Name = "Clause", UserId = 215 }); // Assert Assert.NotNull(pet); }