c# - Not sure how I Mock this simple Save(User user) method in my .NET code -

I'm still trying to get my head around the joke. Right now, I'm trying to test my save method on my UserService . As such, I am mocking my IRAP positrior who uses my UserService class.

What I do not get ... If I usually get this user to have my db / repository, it magically receives an identity, which sets it, in my example object There is no rocket science content here.

What I do not understand, how do I duplicate it? should I care? I thought I should or .. It is that I do not care about it .. Because I am just making sure that the repository system has been called .. Not so much that it brings back the right data.

This is my proxy unit test code. I (unit test, integration test is not why .. fake stores) ...

  [TestMethod] HavingUnuAairWithWidthDiet ResetSmdNumAuthOfferUserIDDayDay () {// Arrange Var const string password salt = "V4BXAhmHq8IMvR7K20TgoQ ==" var user = new user {DisplayName = "test", email = "foo@foo.com", PasswordSalt = passwordSalt, password = "Foobar" .ToSha2Hash (passwordSalt)}; Var Mock User Repository = New Fake & lt; IRAPSorporation & lt; Users & gt; & Gt; (); MockUserRepository.Setup (x = & gt; x.Save (this. Any & lt; user & gt; ())). Verification (); // Configure this repo in our dependency injection ObjectFactory.Inject (typef (IRAPSosgotry & Lt; User & gt;), Mock Usage Repository Object); // Act (Using new transaction scope ()) {UserService.Save (user); UnitOfWork.Commit (); // & lt; - Not sure about this .. Currently it is still / / an EntityFramework reference // I need to change this .. Something ?? // Insert Assert.IsNotNull (user); Assign ISTRU (UserUUSID> gt; 0); }}   
 and the user service looks like this ..  
  Public class UserService: IUserService {Public UserService (IRPZetter & lt; user & gt; Users Repository, ILoggingService loggingService) {//. Snip .. Public Zero Save (user user) {..}}}   
 Any suggestions?   
 
 
  & gt; 1) How should I test a [UserService.]? Save method? Should I care about the result? And & gt; 2) If I care about # 1 then how do I duplicate the result, so I can check   
 if  the repository is responsible  Identity-Magic   So it does not make sense to duplicate this functionality in a test and then confirms that this functionality has been tested.  You want to test UserService and do not duplicate IRAPZERRY-  The fake duplicate store is just for cropping with intelligence that the service is not crashing and receives all the requirements for the test case. In this case, I do not think that service requires  identity-magic .  
 If the  service is responsible for identifying magic,  , then it makes sense to check that the ID has been set.