Expected a spy, but got Function.

[ashok kumar]

My service is

   

var testappserviceone = angular.module('testappserviceonemodule',[])

testappserviceone.factory('testappServiceone',[function(){
    return function (x,y) {

        function addobj (x,y){
            return x+y;
        }

        return{
            add:addobj
        }
    }
}]);

My service is var testappserviceone = angular.module('testappserviceonemodule',[]) testappserviceone.factory('testappServiceone',[function(){ return function (x,y) { function addobj (x,y){ return x+y; } return{ add:addobj } } }]); My test suite is describe('testappserviceone add method functionality', function(){ beforeEach(function () { spyOn(testappServiceone(10,15),'add').and.callThrough(); }); it('testappServiceone add method functionality', function() { testappServiceone(10,15).add(); expect(testappServiceone(10,15).add).toHaveBeenCalled(); }); }); The Exception I am getting is  Error: <toHaveBeenCalled> : Expected a spy, but got Function. Usage: expect(<spyObj>).toHaveBeenCalled() Please help me to understand and solve this problem