unit testing - How to setup a controller's method using moq -

i have action method in controller below

public actionresult index() {      var supplier = getsupplierforuser();      var model = supplierservice.getoutstandingitems(supplier);                return view(model); } 

i've setup supplier service method as

var supplierservice = new mock<isupplierservice>(); var supplier = new supplier { name = "some name",id = 100};  supplierservice.setup(s => s.getoutstandingitems(supplier))                             .returns(outstandingsupplieriteminfo.object); 

i don't know how can setup method supplier getsupplierforuser() present in base controller return supplier object. moq setup above null supplier passed supplierservice.getoutstandingitems(supplier)

any ideas? thanks

maybe need:

supplierservice.setup(s => s.getoutstandingitems(it.isany<supplier>()))     .returns(outstandingsupplieriteminfo.object); 

the it.isany<> stuff make setup match incoming object (argument).

since use loose mock, if no setup matches arguemnts in question, moq return null. consider using mockbehavior.strict have exception instead.

if not use it.isany<>, moq have try see if supplier passed moq, "is equal to" supplier used when made setup. here can become important .equals(...) semantics type (class or struct) supplier has.

if not have relevant equals semantics, still want restrict setup particular situation, try instead:

supplierservice     .setup(s => s.getoutstandingitems(it.is((supplier s) => s.name == "some name" && s.id == 100)))     .returns(outstandingsupplieriteminfo.object);