Error in Testing using jasmine

the test case is and error is below this page

'use strict';

describe('$auth', function() {


    beforeEach(module('authentication'));
    beforeEach(inject(['$window', '$location', '$httpBackend', '$auth','$rootScope','$compile','$browser', function($window, $location, $httpBackend, $auth,$scope,$compile,$browser) {
        this.$auth = $auth;
        this.$window = $window;
        this.$location = $location;
        this.$httpBackend = $httpBackend;
        this.$rootScope=$scope;
        this.$compile=$compile;
        this.$browser=$browser;


    }]));

    it('should be defined', function() {
        expect(this.$auth).toBeDefined();
    });

    describe('check signup link', function() {
        var spyEvent;
        it('should show correct page', function(){


            $('.CreateNewAccount').trigger( 'click' );

            expect(this.$location.path).toHaveBeenCalledWith('somePage.com/signup');
           // expect(this.browser().$location().path()).toBe("somePage.com/signup");
        });

    });



});

the error i got is

$auth check signup link should show correct page FAILED
    Error: Expected a spy, but got Function.

Please help me to solve this problem i just want to check the signup link is redirect or not to the page signup