Hi Friends,

I am trying to cover a test class for below Trigger. But it's not cover as well , yeah it's just 42% only . already i have inserted Account and Opportunity also. But Still it's Not Covering. Kindly give me a valid advise ! Why it's happening .

************************ Trigget *******************

trigger OpportunityRollUp on Opportunity  ( after insert, after update,after delete) {
     
       Set<ID> accSet = New Set<ID>();
       List<Account> accList  = New List<Account>();
      
      If(Trigger.IsDelete){
        
        for(Opportunity opp1 : Trigger.old){  /* Not Covered */
            accSet.add(opp1.AccountId);   /* Not Covered */
        }
      }
      
      If(Trigger.IsUpdate){
        for(Opportunity opp : Trigger.new){
        
            if(opp.Amount != Trigger.oldMap.get(opp.id).amount && opp.AccountId != Null ){
            
                accSet.add(opp.AccountId);  /* Not Covered */
            }        
        }          
      }
      

      if(!accSet.isEmpty()){
       /* Below Aggregate Result is Not Covered */
        for(AggregateResult age : [Select AccountId,sum(Amount)tot, avg(Amount)opAvg, Min(Amount)opMin,  Max(Amount)opMax  from opportunity     
                    Where AccountId IN :accSet GROUP BY AccountId]){
        
                  accList.add(New Account(Id = (ID)age.get('AccountId'), 
                                         opportunity_Total_Amount__c = (Decimal)age.get('tot'),
                                         Opportunity_Average__c = (Decimal)age.get('opAvg'),
                                         Opportunity_Max__c = (Decimal)age.get('opMax'),
                                         Opportunity_Min__c = (Decimal)age.get('opMin')));
        }
      }  
      
      if(accList.size() > 0){
          update accList;
      } 
      

}

*****************TEST CLASS ********************

@IsTest
Public Class OpportunityRollUp_Test{

public static testMethod void oppRollup(){


//Insert Account
Account acc = New Account();
acc.name = 'Test_Account';
acc.Account_Code__c = 'AP001';
acc.Opportunities_Total_Amount__c = '1000';
acc.Total_Opportunities__c = 5;
acc.Opportunity_Average__c = 1000;
acc.Opportunity_Min__c = 500;
acc.Opportunity_Max__c = 1000;
insert acc;
system.debug('Insert Account Details' + acc);

//insert CurrencyType
CurrencyType__c ctype = New CurrencyType__c();
ctype.name = 'Test_Type';
ctype.Conversion_Rate__c = 50;
ctype.ISO_Code__c = 'INR';
insert ctype;
system.debug('Insert Currency Type details : ' + ctype);

CurrencyType__c ctype1 = New CurrencyType__c();
ctype1.name = 'Test_Type';
ctype1.Conversion_Rate__c = 50;
ctype1.ISO_Code__c = 'AUD';
insert ctype1;

//Insert Oportunity
Opportunity Opp  = New Opportunity();
opp.name = 'Test_Opportunity';
opp.closeDate = System.today();
opp.stageName = 'Closed Won';
opp.Amount = 1000;
opp.Currency__c = 'INR';
opp.USD_Amount1__c = 1000;
opp.AccountId = acc.id;
insert opp;
system.debug('Insert Opp details : ' + opp);


Opportunity Opp1  = New Opportunity();
Opp1.name = 'Test_Opportunity';
Opp1.closeDate = System.today();
Opp1.stageName = 'Closed Won';
Opp1.Amount = 1000;
Opp1.Currency__c = 'INR';
Opp1.USD_Amount1__c = 1000;
Opp1.AccountId = acc.id;
insert opp1;
Opp1.Currency__c = 'AUD';
update opp1;
} 

}

Thanks In Advance...

Regards,
Soundar.