testing - Is it possible to mock the "type name" of a mock in C# using Moq? -

i'm developing chatbot in c# (based on .net core) has modular behaviours. 1 of behaviours want develop "admin" module (among other functions) should allow admins dynamically enable or disable other behaviours name.

i want admin module determine name of behaviour inspecting type info , doing like:

var name = behaviour.gettype().gettypeinfo().name.replace("behaviour", string.empty).tolowerinvariant(); 

in bdd specification i'm writing first, i'm trying set "behaviour chain" consisting of admin module (system under test) , mock behaviour. tests involve sending commands should cause admin module enable or disable mock behaviour.

this i've done far:

public behaviourisenabled() : base("admin requests behaviour enabled") {     var mocktypeinfo = new mock<typeinfo>();     mocktypeinfo.setupget(it => it.name).returns("mockbehaviour");      var mocktype = new mock<type>();     mocktype.setup(it => it.gettypeinfo()).returns(mocktypeinfo.object);      // todo: make mock behaviour respond "foo"     var mockbehaviour = new mock<imofichanbehaviour>();     mockbehaviour.setup(b => b.gettype()).returns(mocktype.object);      this.given(s => s.given_mofichan_is_configured_with_behaviour("administration"), addbehaviourtemplate)         .given(s => s.given_mofichan_is_configured_with_behaviour(mockbehaviour.object),                 "given mofichan configured mock behaviour")             .and(s => s.given_mofichan_is_running())         .when(s => s.when_i_request_that_a_behaviour_is_enabled("mock"))             .and(s => s.when_mofichan_receives_a_message(this.johnsmithuser, "foo"))         .then(s => s.then_the_mock_behaviour_should_have_been_triggered())         .teardownwith(s => s.teardown()); } 

the problem when run gettypeinfo() extension method on type, moq throws exception:

expression references method not belong mocked object: => it.gettypeinfo()

an alternative, add name property imofichanbehaviour, don't idea of adding arbitrary methods/properties production code that's there benefit of test code.

keep simple fake class satisfies being mocked.

public class mockbehaviour : imofichanbehaviour { ... } 

and test like

public behaviourisenabled() : base("admin requests behaviour enabled") {      // todo: make mock behaviour respond "foo"     var mockbehaviour = new mockbehaviour();       this.given(s => s.given_mofichan_is_configured_with_behaviour("administration"), addbehaviourtemplate)         .given(s => s.given_mofichan_is_configured_with_behaviour(mockbehaviour),                 "given mofichan configured mock behaviour")             .and(s => s.given_mofichan_is_running())         .when(s => s.when_i_request_that_a_behaviour_is_enabled("mock"))             .and(s => s.when_mofichan_receives_a_message(this.johnsmithuser, "foo"))         .then(s => s.then_the_mock_behaviour_should_have_been_triggered())         .teardownwith(s => s.teardown()); }