Public class TriggerHandler_Controller
{         
    
    public void afterInsert(List<RPR__c> objList){
        List<Quote> quoteList = new List<Quote>();
        List<QuoteLineItem> qliList = new List<QuoteLineItem>();
        
        Pricebookentry pbe = [select Id,pricebook2Id,product2Id from PricebookEntry where product2id = '01t28000000cRQsAAM'];
        Id oppId = [select id from opportunity where id =: '0060k00000CuKIw' LIMIT 1].Id;
        
        Set<Id> accId = new Set<Id>();
        List<RPR__c> rprList = new List<RPR__c>();
        for(RPR__c rpr : objList)
        {
            rprList.add(rpr);
            accId.add(rpr.Account__c);
        }
        List<Opportunity> oppList = [SELECT Id,Name FROM Opportunity
                                     WHERE AccountId IN : accId];
        System.debug('Account Set'+accId + ' Opportunity List '+ oppList);
        for(RPR__c rprNew : rprList){
            Quote q = new Quote();
            q.Name = 'Teston New Quote'+rprNew.Name;
            
            q.OpportunityId = oppList[0].Id;
            q.Ship_To_City__c = rprNew.Shipment_From__c;
            q.Pricebook2Id = pbe.pricebook2id;
            quoteList.add(q);
        }
        
        if(!quoteList.isEmpty()){
            insert quoteList;
        }
        
        for(Quote q : quoteList){
            QuoteLineItem qli = new QuoteLineItem();
  
            qli.QuoteId = q.Id;
            qli.quantity = 2;
            qli.pricebookentryId = pbe.id;
            qli.unitprice = 10;
            qli.product2Id = pbe.product2Id;
            qli.Packing_Style__c = q.X1_Packing_Style__c;
            
            qliList.add(qli);
        }
        
        if(!qliList.isEmpty()){
            insert qliList;
        }      
        
        
        
        
    }
    public void beforeUpdate(List<RPR__c> objList){
        
        Set<Id> RPR_Ids = new Set<Id>();
        for(RPR__c obj : objList){
            RPR_Ids.add(obj.Id);
        }
        
        Map<Id, RPR__c> oppMap = new Map<Id, RPR__c>([
            Select (Select IsPending, ProcessInstanceId, TargetObjectId, StepStatus, OriginalActorId, ActorId,Actor.Name, RemindersSent, Comments, IsDeleted, CreatedDate, CreatedById, SystemModstamp 
                    From ProcessSteps where StepStatus IN ('Approved','Rejected') ORDER BY CreatedDate DESC) From RPR__c WHERE Id IN : RPR_Ids]);
        
        for(RPR__c opp: objList) {
            RPR__c opp1 = oppMap.get(opp.Id);
            opp.Approver_Comments__c = '';
            for (ProcessInstanceHistory processStep : opp1.ProcessSteps) {
                opp.Approver_Comments3__c = 'aa'; //This is a dummy value & field only.
                opp.Approver_Comments__c += 'Comments: ' + processStep.comments + ' . Status: ' + processStep.StepStatus + ' . Date: ' + processStep.CreatedDate +' . Commentor Name: ' + processStep.Actor.Name + '\\';
                //opp.Approved_Date__c = DateTime.parse(system.now().format());
                opp.Approver_Comments3__c = 'aa'; //This is a dummy value & field only, DO NOT DELETE, MAY EFFECT REPORT TYPE
            }
            opp.Approver_Comments3__c = 'aa';
        }
        
    }
    
}

The test class with i wrote is showing zero code coverage , please help me out what went wrong and what should be added to get the code coverage for this.

@isTest (SeeAllData=false)
public class TriggerHandlerTest {
    
    @isTest
    public static void test()
    {
        

  RPR__c RPR = new RPR__c();
        //RPR.id = 'a0A0k00000Pk6GgEAJ';
        RPR.Requested_Date__c = Date.newInstance(2010, 07, 15);
        RPR.Approval_Status2__c = 'Draft';
        RPR.Account__c = '0012800000mRNOaAAO';
        RPR.Approver_Comments3__c = 'ok';
        insert RPR;
        
        User submitter = [SELECT Id FROM User WHERE IsActive = true LIMIT 1];
        
        
        //System.runAs(submitter) {
            Approval.ProcessSubmitRequest r = new Approval.ProcessSubmitRequest();
            r.setObjectId(RPR.Id);
            r.setNextApproverIds(new Id[] {UserInfo.getUserId()});
            //r.setNextApproverIds(null);      
            //r.setNextApproverIds('80010000000EAMZ');
            Approval.process(r);
        //}
        
        
        Test.startTest();
        update RPR;
        Test.stopTest();
    }