public void Update_UpdateInDatabase_true() { //Arrange Author newAuthor = new Author("Ernest Hemingway"); newAuthor.Save(); Book newBook = new Book("Old Man and the Sea", 5); newBook.Save(); newBook.AddAuthor(newAuthor.GetId()); Patron newPatron = new Patron("Johnny English", "555-555-5555"); newPatron.Save(); Checkout newCheckout = new Checkout("2017/05/1", newPatron.GetId(), newBook.GetId()); newCheckout.Save(newBook); //Act newCheckout.Update("2017/06/12"); string result = newCheckout.GetDueDate(); //Assert Assert.Equal("2017/06/12", result); // Assert.Equal(newName, result.GetName()); }