***********My Batch Class***********
global class CreateMissingentitlementWithSA  implements Database.Batchable<sObject> {
    
   List<String> Reclist = new List<String>{'Renewal - Booked', 'Renewal'};   
   List<String> StgVal = new List<String>{'Closed Won'};
    
   public String  Query='Select id, OpportunityId,Opportunity.stageName, Name from OpportunityLineItem where OpportunityId Not In (Select Opportunity__c From Entitlement__c)';   
 
    
 global database.querylocator start(Database.BatchableContext BC)
  {
  
  return Database.getQueryLocator(Query);
  } 
    
 global void execute(Database.BatchableContext BC, List<sObject> scope) {
    
    list<OpportunityLineItem> Opp=new list<OpportunityLineItem>();
    set<Id> Opptyids=new set<Id>();
    set<Id> OpsId=new set<Id>();
    list<opportunitylineItem> listOLIs = new list<opportunitylineItem>();
     for(sObject s : scope){
         OpportunityLineItem op = (OpportunityLineItem)s;
          if(op.id!=null){
            Opptyids.add(Op.id);
          }
          if(op.OpportunityId!=null){
            OpsId.add(op.OpportunityId);
          }
        
     }
     if(!Opptyids.isempty()){
        
        listOLIs = [SELECT OpportunityId, id,Product2id,Number_of_SAT_Hours__c,Number_of_Units__c ,PricebookEntryId FROM OpportunityLineItem where OpportunityId not in (select opportunity__c from entitlement__c) and Product2.family = 'Product Bundle' and Product2.Web_Site_Id__c!='' and id in :Opptyids];

        if(listOLIs!=null && listOLIs.size()>0)
        {
            ConvertedOLIWorkflows objConvertedOLIWorkflows = new ConvertedOLIWorkflows (listOLIs );
            objConvertedOLIWorkflows.createEntitlementAfterOLI(listOLIs );
        system.debug('Check If Entitlements Addedd Successfully');
        }
                
         list<Service_Access__c> SAlist =  new list<Service_Access__c>();   
        
         SAlist= [Select id, Sold_Opportunity__c from Service_Access__c where Sold_Opportunity__c In:OpsId];       
         Map<Id, Id> SAOptyMap = new Map<Id, Id>();
         If (SAlist!=null)
          for (Service_Access__c SA:SAlist) 
          {
          SAOptyMap.Put(SA.Sold_Opportunity__c, SA.Id);
          }
          list<Entitlement__c> EntLst = new list<Entitlement__c>();
          EntLst= [Select id, Opportunity__c, Service_Access__c from Entitlement__c where Opportunity__c In:OpsId];
          
          for(Entitlement__c Ent:EntLst ){
          Ent.Service_Access__c= SAOptyMap.get(Ent.Opportunity__c);
          }
          
          Update EntLst;
            
            
     }
    
    
   }  
   
    global void finish(Database.BatchableContext BC){
    
   AsyncApexJob a = [Select Id, Status, NumberOfErrors, JobItemsProcessed,
                      TotalJobItems, ExtendedStatus,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.setBccSender(true);
       mail.setSubject('Add missing entitlements batch job ' + a.Status );
       mail.setPlainTextBody
             ('The batch Apex job processed ' + a.TotalJobItems +
           ' batches with '+ a.NumberOfErrors + ' failures due to'+ a.ExtendedStatus  );
          Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
          
          
   }
  
}

*******my Test Class for the above batch***
@isTest(seeAllData=true)
private class CreateMissingentitlementWithSATestClass{

    static testMethod void myTest() {
                             
          Id rtid = Schema.SObjectType.Opportunity.getRecordTypeInfosByName().get('Renewal').getRecordTypeId();

          Id rtid1 = Schema.SObjectType.Opportunity.getRecordTypeInfosByName().get('Renewal - Booked').getRecordTypeId();
                      
          Product2 p = new product2(name='Test Product', Family = 'Product Bundle', Discount_No_Approval__c=10, Discount_FL_Approval__c=25, Discount_GL_Approval__c =50, Discount_Finance_Approval__c =75, Web_Site_Id__c = 'test');
          insert p;
          
          Bundled_Components__c bundComp = new Bundled_Components__c(CurrencyIsoCode='USD', Parent_Product__c=p.id);
          insert bundComp;
            
          insert new PricebookEntry(unitprice = 100.0, product2id = p.id, pricebook2id = Test.getStandardPricebookId(),isActive=true);
                                         
                
          Pricebook2 pb = new pricebook2(name='test pricebook');
          insert pb;
            
          PricebookEntry pbe = new PricebookEntry(pricebook2id=pb.id, product2id=p.id, unitprice=100.0, isActive=true);
          insert pbe;  
                       
          account acc = new account(Type = 'LE', Membership_Type__c = 'Standard', AnnualRevenue = 100, Name = 'SaurabhTest', NumberOfEmployees = 2, Region__c = 'NA');
          insert acc;                             
        
          Contact c = new Contact(AccountID =acc.Id, FirstName='FirstName', LastName='Testing Contact',Title='Naveen', Email='test14@gmail1421.com', Mailing_Address_1__c='Delhi');
          insert c;
            

                         
                         opportunity oppNew = new opportunity();
                         oppNew.Gartner_Opportunity_ID__c = 'o12345'; 
                         oppNew.Amount = 0 ;
                         oppNew.Pricebook2Id = pb.id ;
                         oppNew.GTS__c = true;
                         //oppnew.TerritoryId = TerritoryId;
                         //oppnew.ownerId = OwnerId;
                         oppNew.Main_Contact__c = c.id ;
                         oppNew.accountId = acc.id;
                         oppNew.stageName = 'Prospecting';
                         oppNew.CloseDate = Date.today();
                         oppNew.Name = 'GTS Opportunity';
                         oppNew.RecordTypeId=rtid;
                                                  
                         insert oppNew;
                         
          OpportunityLineItem oli = new OpportunityLineItem(Allow_Delete__c=true, Manual_Pricing__c=true,opportunityid=oppNew.id,UnitPrice=100, quantity=1,
                                        pricebookentryid=pbe.Id,Start_Date__c=Date.newInstance(2018,03,22),End_Date__c=Date.newInstance(2019,03,21),Retail_Amount__c=550000);
                                        
          insert oli;
                         
                                             
     Test.startTest(); 
     CreateMissingentitlementWithSA ent = new CreateMissingentitlementWithSA();
     Id batchId = Database.executeBatch(ent); 
     Test.stopTest();         
        
          
   
   }
   }