Hello All,

I have written Apex test class but it showing error like"List has no row for assignment to  sObject  "
my apex class is-

@isTest
public class ProductEntryTest {
    
  
    @isTest
public static void test()
{
    List<opportunityLineItem> Oli=new List<opportunityLineItem>();
    Account acc=new Account();
    acc.name='MassBay';
    insert acc;
    Opportunity opp=new Opportunity();
    string p;
opp.CloseDate=date.today().addMonths(2);
opp.Name='test opp';
opp.StageName='IsWon';
opp.AccountId=acc.id;
    
insert opp;
        
        
     Product2 prd1 = new Product2 (); // ----> Create  product
    prd1.Name='Accomodation';
    prd1.Units_of_Measure__c='1';
    insert prd1;
     Pricebook2 pb2 = [select id, name from Pricebook2 where name='BlackBeltHelp V2'];
       if(pb2!=null)
       {
           p=pb2.id;
       }
    PricebookEntry pbe1 = new PricebookEntry ();  //------->Create PriceBookEntry
    pbe1.Product2ID=prd1.id;
    pbe1.Pricebook2ID=p;
    pbe1.UnitPrice=50;
    pbe1.isActive=true;
  
    insert pbe1;
    
    
  
    OpportunitylineItem otm=new Opportunitylineitem();
    otm.OpportunityId=opp.id;
    otm.PricebookEntryId=pbe1.id;
    otm.Product2Id=prd1.id;
    otm.Unit_of_measure__c=prd1.Units_of_Measure__c;
    oli.add(otm);
if(oli.size()>1)
{
    insert oli;
        
}  
}
}