public Pagereference save(){
       system.debug('2');
       tax.Resource__c=user[0].id;
       try{
           insert tax;
           //statusM = true; 
           ApexPages.addMessage(new ApexPages.message(ApexPages.severity.INFO,'Thank you!Record saved'));
           
       }
       catch(Exception ex){
           ApexPages.addMessages(ex);
           return null;
       }
       
       ITax=[select id,Rent_paid_to_landlord__c,Leave_travel_concessions_or_assistance__c,Employees_PF__c,
                           Interest_payable_paid_to_lender__c,Children_s_Education_Fee__c,PPF__c,Insurance_Premium__c,
                           NSC__c,Deduction_under_Pension_scheme__c,Housing_loan_principal_repayment__c,ELSS_Mutual_Fund__c,
                           NPS__c,Payment_for_Medical_Insurance_Premium__c,Medical_treatment_for_handicapped__c,
                           Medical_for_specified_diseases__c,Education_Loan_Interest_Repayment__c,Interest_on_loan_taken_for_house__c,
                           Donation__c,Rent_deduction_only_if_HRA_not_received__c,Saving_interest__c,Rebate_of_Rs_2000__c,RGESS__c,
                           Royalty__c,Professional_Development_Allowance__c,Car_Maintenance_Allowance__c,
                           Conveyance_Allowance__c,Helper_Allowance__c,Telephone_Internet_allowance__c,
                           Tax_by_previous_employer__c,TDS_already_deducted_by_Current_Company__c,Donation_to_Other__c
                           from Income_Tax__c where id=:tax.id];
       If(ITax.Rent_paid_to_landlord__c!=null){
           Attachment a = new Attachment(parentid=ITax.id, Name = 'Rent paid to landlord.jpeg' , Body = myfile.body);
           try {insert a;}
           catch(Exception ex){
               ApexPages.addMessages(ex);
               return null;
           }
       }
       
       If(ITax.Leave_travel_concessions_or_assistance__c!=null){
           Attachment a1 = new Attachment(parentid=tax.id, Name = 'Leave travel concessions or assistance.jpeg', Body = myfile1.body);
           try {insert a1;}
           catch(Exception ex){
               ApexPages.addMessages(ex);
               return null;
           }
       }
       
       If(ITax.Interest_payable_paid_to_lender__c!=null){
           Attachment a2 = new Attachment(parentid=tax.id, Name = 'Interest payable paid to lender.jpeg' , Body = myfile2.body);
           try {insert a2;}
           catch(Exception ex){
               ApexPages.addMessages(ex);
               return null;
           }
       }

@isTest
   public static void rentPaidToLord() {
      
       system.debug('hii=====');
       Resource__c res=new Resource__c();
       res.Name='Test';
       res.Emp_ID__c=201;
       res.Joining_Date__c=Date.newInstance(2019,1,1);
       insert res;
       system.debug('====res===='+res);
       
       Income_Tax__c rentPaidToLordTax = new Income_Tax__c();
       rentPaidToLordTax.Rent_paid_to_landlord__c = 12345;
       rentPaidToLordTax.Resource__c=res.Id;
       rentPaidToLordTax.Leave_travel_concessions_or_assistance__c=600;
       Insert rentPaidToLordTax;
       
       system.debug('++++++dcbsd++++++'+rentPaidToLordTax);
       system.debug('=======rent======'+rentPaidToLordTax.Rent_paid_to_landlord__c);
       test.startTest();
       PageReference pageRef = Page.IncomeTaxPage;
       Test.setCurrentPage(pageRef);
       pageRef.getParameters().put('name',res.name);
       ApexPages.StandardController sc = new ApexPages.standardController(rentPaidToLordTax);
       Taxclass tc = new Taxclass (sc);
       system.debug('success==============');
       tc.save();
       List<Attachment> at = [SELECT id FROM Attachment WHERE parentid=:rentPaidToLordTax.id AND Name = :'Rent paid to landlord.jpeg'];
       //System.assert(at.isEmpty()!=null);
       system.assert(Apexpages.hasMessages());

       test.stopTest();
   }