public async Task AddAddressAsyncAdds() { var options = new DbContextOptionsBuilder <Project2JAGVContext>() .UseInMemoryDatabase("AddAddressAsyncGets") .Options; Address address = new Address { Id = 1, Street = "Street", City = "City", State = "State", ZipCode = "ZipCode", }; using var actContext = new Project2JAGVContext(options); var repo = new DataAccess.DataAccess(actContext, new MapperStub()); // act await repo.AddAddressAsync(address); await repo.SaveAsync(); using var arrangeContext = new Project2JAGVContext(options); var result = arrangeContext.Addresses; // assert Assert.NotNull(result); }