testclass for approval

@isTest
public class BatchSendEmailAlerts8Test{
    public static testMethod void method1(){
        List<Apply_Job__c> applyLst = new List<Apply_Job__c>();
   
        Apply_Job__c apply = new Apply_Job__c();
        apply.Status__c = 'Pending Approval';
        apply.Qualification__c='B.pham';
        apply.Next_Alert_Schduled_Date__c = system.today();
        insert apply;
        applyLst.add(apply);
       
        Apply_Job__c apply1 = new Apply_Job__c();
        apply1.Status__c = 'Pending Approval';
         apply1.Qualification__c='B.pham';
        apply1.Next_Alert_Schduled_Date__c= system.today();
        insert apply1;
        applyLst.add(apply1);
       
        Apply_Job__c apply2 = new Apply_Job__c();
        apply2.Status__c = 'Pending Approval';
         apply2.Qualification__c='B.pham';
        apply2.Next_Alert_Schduled_Date__c= system.today();
        insert apply2;
        applyLst.add(apply2);
       
     try {  

    for(Apply_Job__c a: applyLst) {

     // Create an approval for the account and submit
     Approval.ProcessSubmitRequest AccountRequest = new Approval.ProcessSubmitRequest();
     AccountRequest.setObjectId(a.ID);
     Approval.ProcessResult AccountRequestResult = Approval.Process(AccountRequest);
     ProcessInstanceWorkitem pworkItem = new ProcessInstanceWorkitem();
    pworkItem.ActorId = userinfo.getuserId();
    pworkItem.OriginalActorId = userinfo.getuserId();
    pworkItem.ProcessInstanceId = AccountRequestResult.ID;
     insert pworkItem;
     System.assert(AccountRequestResult.isSuccess());  
     
    } // loop thru accounts submitting them for approval
   
   } catch (DMLException e) {
    system.debug('>>>> NO APPROVAL PROCESS FOR ACCOUNTS!');
   }
 
       
        BatchSendEmailAlerts8 batch = new BatchSendEmailAlerts8();
        Test.StartTest();
        Database.executeBatch(batch);
        Test.StopTest();
       

   
    }


}



++++++++++++++++++++++++++++++
ProcessInstance proc = new ProcessInstance();
proc.LastActorId = userinfo.getuserid();
proc.TargetObjectId = apply.id;//applyjob record id
insert proc;

ProcessInstanceWorkitem pworkItem = new ProcessInstanceWorkitem();
pworkItem.ActorId = userinfo.getuserId();
pworkItem.OriginalActorId = userinfo.getuserId();
pworkItem.ProcessInstanceId = proc.id;
insert pworkItem;



@isTest
public class BatchSendEmailAlerts8Test{
    public static testMethod void method1(){
        List<Apply_Job__c> applyLst = new List<Apply_Job__c>();
set<Id> applyIds = new set<Id>();
   
        Apply_Job__c apply = new Apply_Job__c();
        apply.Status__c = 'Pending Approval';
        apply.Qualification__c='B.pham';
        apply.Next_Alert_Schduled_Date__c = system.today();
        insert apply;
        applyLst.add(apply);
       
        Apply_Job__c apply1 = new Apply_Job__c();
        apply1.Status__c = 'Pending Approval';
         apply1.Qualification__c='B.pham';
        apply1.Next_Alert_Schduled_Date__c= system.today();
        insert apply1;
        applyLst.add(apply1);
       
        Apply_Job__c apply2 = new Apply_Job__c();
        apply2.Status__c = 'Pending Approval';
        apply2.Qualification__c='B.pham';
        apply2.Next_Alert_Schduled_Date__c= system.today();
        insert apply2;
        applyLst.add(apply2);

for(Apply_Job__c apps:applyLst)
{
applyIds.add(apps.id);
}

    ProcessInstance proc = new ProcessInstance();
proc.LastActorId = userinfo.getuserid();
proc.TargetObjectId = apply.id;//applyjob record id
insert proc;
system.debug('processInstance record inerted----'+proc.id);

ProcessInstanceWorkitem pworkItem = new ProcessInstanceWorkitem();
pworkItem.ActorId = userinfo.getuserId();
pworkItem.OriginalActorId = userinfo.getuserId();
pworkItem.ProcessInstanceId = proc.id;
insert pworkItem;
system.debug('processInstancework item record inerted----'+pworkItem.id);

List<ProcessInstanceWorkitem> pworkLst = [select id,ActorId,ProcessInstanceId,actor.email,ProcessInstance.TargetObjectId from ProcessInstanceWorkitem where ProcessInstance.TargetObjectId in: applyIds];
system.debug('pworkLst is ---------'+pworkLst.size());

BatchSendEmailAlerts8 batch = new BatchSendEmailAlerts8();
Test.StartTest();
Database.EexecuteBatch(batch);
Test.StopTest();
}
}


       
http://salesforce.stackexchange.com/questions/17981/processinstanceworkitems-not-created-when-running-an-approval-process-unit-test