I'm working on a test for my batch process.  The batch works fine, however, I'm getting an error message in my test class.  Can anyone help?

Here is the batch I'm executing:
 

/**
This batch process will be triggered when a Campaign is deactivated and will stamp the Campaign with the dateTime value.
This batch will kick off two processes that also update Leads and CampaignMembers with the appropriate values.

*/

global class batchDeactivateCampaignCM implements Database.Batchable<sObject>,Database.Stateful{  
   
  
   global final DateTime nowStamp;
   //global final Integer nowStamp;
   global final Integer currentNowDateTime;  
   global List<Campaign> recordsToUpdate;
   
   
   global batchDeactivateCampaignCM(Integer nowDateTime)  
   {  
     currentNowDateTime = nowDateTime;  
     nowStamp = datetime.now();  
     recordsToUpdate = new List<Campaign>();  
   }  
   global Database.QueryLocator start(Database.BatchableContext BC)  
   {  
    return Database.getQueryLocator('Select id, Name, IsActive, Deactivate_Date__c from Campaign WHERE IsActive = FALSE AND Deactivate_Date__c = NULL');
    //Patrick, add this Where clause back in WHERE IsActive = FALSE AND Deactivate_Date__c = NULL
   }  
   global void execute(Database.BatchableContext BC, List<Campaign> scope)  
   {  
    for(Campaign c: scope)  
    {  if(c.IsActive == False && c.Deactivate_Date__c ==NULL){
     c.Deactivate_Date__c = nowStamp;  
    }
    }
    recordsToUpdate.addAll(scope);   
    update scope;  
   }  
    global void finish(Database.BatchableContext BC)
    {
	// Get the ID of the AsyncApexJob representing this batch job
	// from Database.BatchableContext.
	// Query the AsyncApexJob object to retrieve the current job's information.
	AsyncApexJob a = [SELECT Id, 
							Status, 
							NumberOfErrors, 
							JobItemsProcessed,
							TotalJobItems, 
							CreatedBy.Email
							FROM AsyncApexJob 
							WHERE Id = :BC.getJobId()];
	// Send an email to the Apex job's submitter notifying of job completion.
	Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
	String[] toAddresses = new String[] {a.CreatedBy.Email};
	mail.setToAddresses(toAddresses);
	mail.setSubject('Batch Process to Deactivate Campaigns ' + a.Status);
	mail.setPlainTextBody
	('The batch Apex job batchDeactivateCampaignCM processed ' + a.TotalJobItems +
	' batches with '+ a.NumberOfErrors + ' failures.');
	Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
	
System.debug('DateTimeStamped : '+ nowStamp);
System.ScheduleBatch(new batchDeactivateCampaignMembers(recordsToUpdate),'Batch to Update CampaignMembers :'+String.valueOf(Datetime.now()),1,50);  
System.ScheduleBatch(new batchDeactivateLeads(recordsToUpdate),'Batch to Update Leads :'+String.valueOf(Datetime.now()),2,50);   
	
	}
}

My test class is below. 

I'm getting an error on line 18, col 1 stating ( campList.add((Campaign)QIT.next()); ).  The error reads: "System.NoSuchElementException: Iterator has no more elements
Class.Database.QueryLocatorIterator.next: line 52, column 1
Class.batchDeactivateCMLeadTest.testBatch: line 18, column 1"
 

@IsTest  
 class batchDeactivateCMLeadTest  
 {  
 static testMethod void testBatch()  
 {  
  Campaign c = new Campaign(Name='Test Batch Campaign');  
  insert c;  
  Lead l = new Lead(firstname ='Testbatchfirst', lastname = 'Testbatchlast', company = 'Testbatchcompany', National_Provider_Number_NPN__c = '12354868541');  
  insert l;
  CampaignMember cm = new CampaignMember(CampaignId = c.id, LeadId = l.id);
  insert cm;
  Database.BatchableContext BC;  
  batchDeactivateCampaignCM bdc = new batchDeactivateCampaignCM(50);  
  bdc.start(BC);  
  Database.QueryLocator QL = bdc.Start(BC);  
  List<Campaign> campList = new List<Campaign>();  
  Database.QueryLocatorIterator QIT = QL.iterator();  
  campList.add((Campaign)QIT.next());  
  bdc.execute(BC,campList);  
  bdc.finish(BC);  
//   System.assertEquals([Select 
//                         id,
//                         Name
//                         from Campaign
//                         where Name = 'Test Batch Campaign']);  
  Database.BatchableContext BC_new;  
  batchDeactivateCampaignMembers bdcm = new batchDeactivateCampaignMembers([Select Id from Campaign]);  
  bdcm.start(BC_new);  
  Database.QueryLocator QL_new = bdcm.Start(BC_new);  
  List<CampaignMember> campaignMem = new List<CampaignMember>();  
  Database.QueryLocatorIterator QIT_new = QL_new.iterator();  
  campaignMem.add((CampaignMember)QIT_new.next());  
  bdcm.execute(BC_new,campaignMem);  
  bdcm.finish(BC_new);  

  Database.BatchableContext BC_new2;  
  batchDeactivateLeads bdl = new batchDeactivateLeads([Select Id from Campaign]);  
  bdl.start(BC_new2);  
  Database.QueryLocator QL_new2 = bdl.Start(BC_new);  
  List<Lead> campaignLead = new List<Lead>();  
  Database.QueryLocatorIterator QIT_new2 = QL_new2.iterator();  
  campaignLead.add((Lead)QIT_new.next());  
  bdl.execute(BC_new,campaignLead);  
  bdl.finish(BC_new);

 }  
 }