c# - Extension method for generic interface does not show on subclasses -

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i trying implement extension method initialize moq repositories mvc3 application. have repository interface:

public interface irepository<tentity> : idisposable tentity : class {     //methods }

i have several classes such userrepository implement interface:

public interface iuserrepository : irepository<user> {    //specific methods user repository }  public class userrepository : efrepositorybase<user>, iuserrepository { }

efrepositorybase repository base class providing general methods repository. in unit tests create extension method each type of repository retrieve mock repository. tried adding extension method this:

public static class repositoryhelpers {     public static mock<irepository<t>> getmockrepository<t>(this irepository<t> repository, params t[] items) t : class     {         mock<irepository<t>> mock = new mock<irepository<t>>();         mock.setup(m => m.getall()).returns(items.asqueryable());         return mock;     } }

however not seem work. expecting use userrepository.getmockrepository(...) retrieve initialized mock repository method not show on userrepository.

update

i got work new userrepository().getmockrepository(), there way make method available static method dont have new userrepository?

extension methods instances of objects, not add static methods type.

try this

(new userrepository()).getmockrepository(...)

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