c# - How do I tell RhinoMocks to return the same object passed as parameter -

i'm using rhinomock unit testing , want know how set particular method returns same object received parameter.

this interface want mock:

public interface iitemrepository {     item craete(item item); } 

i want set rhinomocks in such way every time create method called, mocked stub return same object passed parameter.

this test initialization method:

[testinitialize] public void crateservicewithmockrepository() {     var stubrepository = mockrepository.generatestub<iitemrepository>();      // ... how set-up stubrepository described above ...      // create target service unit test     this.targetservice = new servicexyz(stubrepository); } 

you can use do , pass delegate execute when method called:

stubrepository.stub(r => r.create(null)).ignorearguments()     .do(new func<item, item>(item => item));