public class OrderTrackingList{
    public OrderTrackingList(ApexPages.StandardController controller) {}
    public list<wrapgroupwise> singlegroup;
    public List<wrapgroupwise> getStartHere(){
    singlegroup= new List<wrapgroupwise>();
    List<orders__c> tempacc=[SELECT Id,Name FROM orders__c where id=:ApexPages.currentPage().getParameters().get('id')];
 
     for(Integer i=0; i<tempacc.size() ; i++){
        List <order_lines__c> tempOrderLines=[SELECT Id,name From order_lines__c Where order_number__c=:tempacc[i].id];
        List <shipment_lines__c> tempShipmentLines=[SELECT Id,Name From shipment_lines__c Where Order_Number__c=:tempacc[i].id];
         
      if(tempOrderLines.size()==0 && tempShipmentLines.size()==0){
              singlegroup.add(new wrapgroupwise(tempacc[i],null,null)); 
        }
        else{
         
         if(tempShipmentLines.size()==0)
         {
              if(tempOrderLines[i].status__c=='Open')
               {
                   tempOrderLines[i].calculated_estimated_delivery_date__c=tempOrderLines[i].planned_ship_date__c;
               }
                                 
            singlegroup.add(new wrapgroupwise(tempacc[i],tempOrderLines,null)); 
                  
          }   
         else
         {
    
           if(tempOrderLines[i].status__c=='Open')
           {
               tempOrderLines[i].calculated_estimated_delivery_date__c=tempOrderLines[i].planned_ship_date__c;
           }
           if(tempOrderLines[i].status__c=='Invoiced')
           {
               tempOrderLines[i].calculated_estimated_delivery_date__c=tempShipmentLines[i].estimated_delivery_date__c;
           }
           if(tempOrderLines[i].status__c=='Shipped but not billed')
           {
               tempOrderLines[i].calculated_estimated_delivery_date__c=tempShipmentLines[i].estimated_delivery_date__c;
           }           
     
          singlegroup.add( new wrapgroupwise(tempacc[i],tempOrderLines,tempShipmentLines)); 
         }
    
        }
       }
      return singlegroup; 
      }
     public class wrapgroupwise
     {
        public List<order_lines__c> con {get;set;}
        public orders__c acc {get;set;}
        public List<shipment_lines__c> opp {get;set;}
    
         public wrapgroupwise( orders__c a , list<order_lines__c> c,list<shipment_lines__c> o)
         {
            acc=a;
            con=c;
            opp=o;
          } 
      } 
     }

@isTest
     public class GE_PW_OrderTrackingList_Test{ 
    static testMethod void coverCode(){
             
              //GE_PW_OrderTrackingList.wrapgroupwise wgw = new            GE_PW_OrderTrackingList.wrapgroupwise();
              Profile pf= [SELECT Id FROM Profile WHERE name= 'System Administrator' LIMIT 1];
              
              Account acc = new Account(Name='ABC Corp.');
              insert acc;
              System.assertEquals('ABC Corp.', acc.name);
              
              gew_orders__c tempOrder = new gew_orders__c();
              tempOrder.name = '0001234567';
              tempOrder.gew_account__c = acc.id;
              insert tempOrder;
              System.assertEquals('0001234567', tempOrder.name);
              
             
              gew_order_lines__c tempOL = new gew_order_lines__c();
              tempOL.Name = '10';
              tempOL.gew_number_of_order_lines__c = tempOrder.id;
              insert tempOL;
              System.assertEquals('10', tempOL.name);
              
              gew_shipment_lines__c tempSL = new gew_shipment_lines__c();
              tempSL.Name = '10'; 
              tempSL.CurrencyIsoCode = 'USD'; 
              insert tempSL;
              
              System.assertEquals('USD', tempSL.CurrencyIsoCode);
 
             GE_PW_OrderTrackingList gepwO = new GE_PW_OrderTrackingList(new ApexPages.StandardController(tempOrder));  
        	 GE_PW_OrderTrackingList gepwOL = new GE_PW_OrderTrackingList(new ApexPages.StandardController(tempOL));
             GE_PW_OrderTrackingList gepwSL = new GE_PW_OrderTrackingList(new ApexPages.StandardController(tempSL));
 			 gepwO.getStartHere();
             //gepwOL.singlegroup.add(gepwOL);
        	// gepwSL.singlegroup.add(gepwSL);
            // gepwO.singlegroup.add(gepwO);
            }
       }