public class addMileageExpense {
public Expense_Report__c reports;
 public Mileage_expense__c del;
 public List<Mileage_expense__c> addexpenseList {get;set;}
 public List<Mileage_expense__c> delexpenseList {get;set;}
 public List<Mileage_expense__c> expenseList {get;set;}
 public Integer totalCount {get;set;}
 public Integer rowIndex {get;set;}
 public List<Mileage_expense__c> delexpense {get; set;} 
 public addMileageExpense(ApexPages.StandardController controller) {
 
 reports = (Expense_Report__c)controller.getRecord();
 expenseList = [Select id, Name, Expense_Report__c, Miles__c, Total_Miles__c,   
                Date__c, Prgm_1_Miles__c, Prgm_2_Miles__c, Prgm_3_Miles__c, Prgm_4_Miles__c, 
                Prgm_5_Miles__c, Prgm_6_Miles__c from Mileage_expense__c where Expense_Report__c =: reports.ID];
 totalCount = expenseList.size();
 
 delexpenseList = new List<Mileage_expense__c>();
 delexpense = new List<Mileage_expense__c>();
 }
 
 public void addRow(){
 addexpenseList = new List<Mileage_expense__c>();
 expenseList.add(new Mileage_expense__c(Expense_Report__c = reports.Id , Date__c = System.today()+2 ));
 }
 
 public PageReference ave(){
 
 upsert expenseList;
 delete delexpenseList;
 return (new ApexPages.StandardController(reports)).view();
 } 
 
 public void deleteRow(){
 
 rowIndex = Integer.valueOf(ApexPages.currentPage().getParameters().get('rowIndex'));
 System.debug('row to be deleted ' + rowIndex );
 System.debug('row to be deleted '+ expenseList[rowIndex]);

     del = expenseList.remove(rowIndex);
     If(del.Id <> null) {delexpenseList.add(del);}
         
 
     }
 }

@isTest 
public class TestClassforMileage2 {
    public static testMethod void testmyController()
	{

	
        // Instantiate a new controller with all parameters in the page
        Expense_Report__c testExpenseReport = new Expense_Report__c();
			//testExpenseReport.User__c= '00536000002siWO'; 
			testExpenseReport.Start_Date__c= System.today();
			testExpenseReport.End_Date__c=System.today()+1;
			testExpenseReport.User__c= Userinfo.getUserId();
			
        insert testExpenseReport; 
	
	
		Mileage_expense__c milExp = new Mileage_expense__c();
			milExp.Expense_Report__c = testExpenseReport.id;
			milExp.Date__c = System.today()+1;
			milExp.Name = 'This is my test mileage expense.';
        insert milExp;

		Mileage_expense__c milExp1 = new Mileage_expense__c();
			milExp1.Expense_Report__c = testExpenseReport.id;
			milExp1.Date__c = System.today()+2;
			milExp1.Name = 'This is another test mileage expense.';
        insert milExp1;

        
		ApexPages.StandardController sc = new ApexPages.StandardController(testExpenseReport);
		addMileageExpense  controller = new addMileageExpense(sc);

		PageReference pageRef = Page.addMileageExpense2;
        Test.setCurrentPage(pageRef);
    	
		controller.addRow();
		ApexPages.currentPage().getParameters().put('rowIndex','0');
		controller.deleteRow();
		
		try
		{
			controller.ave();
		}
		Catch(Exception ee)
		{
			
		}
    }
}