public PageReference getBackupAttendees() {
    //Variable Declarations
    List<Attendee_Backup__c> lstAttendeeBackobj = new List<Attendee_Backup__c>();

    //Read Web Service

    selectedBackAttendee = fetchAttendeeJSON(requestEndpoint + 'attended');

    Map<String, Object> data = (Map<String, Object>)JSON.deserializeUntyped(selectedBackAttendee);
    String status = (String)data.get('status');
    Integer count = (Integer)data.get('count');
    List<Object> results = (List<Object>) data.get('results');

    for(Object result: results) {
        Attendee_Backup__c attendeeBackObj= new Attendee_Backup__c();
       Map<String, Object> res = (Map<String, Object>) result;
       attendeeBackObj.Attendee_Backup_U_Id__c= Integer.valueof(res.get('u_id'));
       attendeeBackObj.Attendee_Backup_EA_Event_Id__c= Integer.valueof(res.get('event_id'));
       attendeeBackObj.Attendee_Backup_Title__c= String.valueof(res.get('title'));
       attendeeBackObj.Attendee_Backup_Forename__c= String.valueof(res.get('forename'));
       attendeeBackObj.Attendee_Backup_Surname__c= String.valueof(res.get('surname'));
       attendeeBackObj.Attendee_Backup_Email_Address__c= String.valueof(res.get('email'));
       attendeeBackObj.Attendee_Backup_Registration__c= String.valueof(res.get('registration'));
       attendeeBackObj.Attendee_Backup_Checkin__c = String.valueof(res.get('checked_in'));
       attendeeBackObj.Attendee_Backup_Event_Group_Registered__c= String.valueof(res.get('event_group_registered'));
       attendeeBackObj.Attendee_Backup_Event_Registered__c= String.valueof(res.get('event_registered'));
       lstAttendeeBackobj.add(attendeeBackObj);

    }

    if(Attendee_Backup__c.Attendee_Backup_U_Id__c.getDescribe().isUpdateable()){
    //Update object
    upsert lstAttendeeBackobj Attendee_Backup_U_Id__c;
}
PageReference syncRend = new PageReference('/apex/DelegateManagerSync?id=' + auth.Id); //redirect to Sync page if auth key is valid
     syncRend.setRedirect(false);
return syncRend;
}

@isTest
public with sharing class AttendeeMockHttpResponseGenerator implements HttpCalloutMock {
    // Implement this interface method
    public HTTPResponse respond(HTTPRequest req) {
        // Optionally, only send a mock response for a specific endpoint
        // and method.
        system.debug(req.getBody());
        system.debug(req.getMethod());
        system.debug(req.getEndpoint());


        System.assertEquals('endpoint here', req.getEndpoint());
        System.assertEquals('GET', req.getMethod());

        // Create a fake response
        HttpResponse res = new HttpResponse();
        res.setHeader('Content-Type', 'application/json');
        res.setHeader('dm', 'test');
        res.setHeader('api-key', '0000000000000000000');
        res.setHeader('event-id', '1');
        res.setBody('{"status": "Success","count": 4,"results":[delegate_type": "Default", "event_attend_id": 1295, "u_id": 1295,"event_id": 1, "registration": 1,"checked_in": 0,"title": "Mr","forename": "Albert", "surname": "Alexander", "email": "ch6ure6mdp1378wgkfbt9@delegatemanager.com", "register_date": "2017-01-26 10:20:04", "event_group_registered": "DM6000 Group 1", "event_registered": "DM6000 Large conference","user_information": "","date_of_birth": null,"company": "","company_role": "","phone_number": "","Mobile Number": "","attendee_group": "","plus_guest": 0,"guest_of": null}]}');
        res.setStatus('OK');
        res.setStatusCode(200);
        return res;
    }
}

public String fetchAttendeeJSON(String endpoint)

            {

            try        {
        List<Event__c> evEvent = [SELECT Event_Id__c,Event_Group_Id__c FROM Event__c WHERE Event_Name__c LIKE :selectedEventValue LIMIT 1];
        Http http = new Http();
        HttpRequest request = new HttpRequest();
        request.setHeader('Content-Type', 'application/json');
        request.setHeader('dm', auth.Authentication_Site__c);
        request.setHeader('api-key', auth.Authentication_Key__c);
        request.setHeader('event-id', evEvent[0].Event_Id__c);
        request.setEndPoint(endpoint);
        request.setMethod('GET');
        request.setTimeout(120000);
        HttpResponse response = http.send(request);
        return response.getBody();

            }

            catch(Exception ex)

            {
            return '';
            }


            }

@isTest
public class SyncExtensionControllerTest {

    @isTest public static void testBackupAttendees() {
       Authentication__c auth = new Authentication__c();
        auth.Authentication_Site__c ='testsite';
       auth.Authenticated_as__c='testing@testing.com';
       auth.Authentication_Key__c='00000000000000000000';
       insert auth;

       Attendee_Backup__c att = new Attendee_Backup__c();
       att.Attendee_Backup_EA_Event_Id__c = 2;
       att.Attendee_Backup_Email_Address__c = 'test@test.com';
       att.Attendee_Backup_Event_Group_Registered__c = '1';
       att.Attendee_Backup_Event_Registered__c = 'Test Event';
       att.Attendee_Backup_Forename__c = 'TestF';
       att.Attendee_Backup_Surname__c = 'TestS';
       att.Attendee_Backup_Register_Date__c = system.today();
       att.Attendee_Backup_Title__c = 'Mr';
       att.Attendee_Backup_U_Id__c = 5;
       att.Attendee_Backup_Registration__c = '1';
       att.Attendee_Backup_Checkin__c = '';
       insert att;



      test.startTest();
      Test.setMock(HttpCalloutMock.class, new AttendeeMockHttpResponseGenerator());
      PageReference pageRef = Page.DelegateManagerSite;
      Test.setCurrentPage(pageRef);
      ApexPages.StandardController stcontroller1 = new ApexPages.StandardController(auth);
      SyncControllerExtension a = new SyncControllerExtension(stcontroller1);
      a.getBackupAttendees();
      test.stopTest();


        }
}