c# - Using Microsoft Fakes to Mock -

I have closed classes with Ashink (NIT 4.5), which need to make fun of the methods. I am using Microsoft Fox and so they will be "Shim". The following code is an example of what I need to do. It creates, but when the "login" synchronization method is run and the "login acic" method is called, the test is hanging.

  [TestMethod] Public async work log Post_Returns () {(ShimsContext.Create ()) {var c = New TestController (); Var user = new user (); Fakes.ShimUserManager.AllInstances.LoginAsyncString = (Um, U) => New Job & lt; IUser & gt; (() => {Return user;}); // call controller method var result = c. See login (model, return url) as a view; Var expectedViewName = "index"; Assert.IsNotNull (results); Confirm. First (expected ViewName, result. ViewName); } // Controller method public async works & lt; ActionResult & gt; Login (login model model, string return url) {var user = user manager. Login async (model username, model password); See Return (); }    
 
 
  Task  Do not use constructor  Async  code if you need a complete  work , with return value,  Tasks. Use the FRRScult :  
  IUser user = new user (); Fakes.ShimUserManager.AllInstances.LoginAsyncString = (Um, U) => Task.FromResult (user);   
 As an additional tip, these unit tests have a good idea to cover these cases:  
 
 Synchronous success ( Task.FromResult (user)  
 Asynchronous success ( Task .RUn () => User) ).  
 Asynchronous error ( Task.Run ((=) => new invalid operation expiration ("or whatever"); return user;}) ).