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Chandra babu 2Chandra babu 2 

please help me Dear all,How to write the the test class?

public class  ReturnSupplierWiseSummaryctrl
{
       public List<Return_Supplier_Wise_Summary__c> rswsum{get;set;}
       public List<Return_Supplier_Wise_Summary__c> rswsummary{get;set;}
       public Return_Supplier_Wise_Summary__c rsws{get;set;}
       public Return_Supplier_Wise_Summary__c rswst{get;set;}
       public Date todate{get;set;}
       public Date fromdate{get;set;}
       public DrugSale__c drgs{get;set;}
       public List<AggregateResult> drgsl{get;set;}
       public List<PieWedgeData> pieData {get;set;}
   
     public PageReference search() 
    {
    rswsum= new List<Return_Supplier_Wise_Summary__c>();
    rswsummary=new List<Return_Supplier_Wise_Summary__c>();
      rsws=new Return_Supplier_Wise_Summary__c();
    rswst=new Return_Supplier_Wise_Summary__c();
    drgs=new DrugSale__c();
    drgsl=new List<AggregateResult>();
      pieData = new List<PieWedgeData> ();
    fromdate =date.parse(ApexPages.CurrentPage().getParameters().get('fromdate'));
    todate=date.parse(ApexPages.CurrentPage().getParameters().get('todate'));
   drgsl=[select Drug_Name__c medtyp,SUM(Selling_Quantity__c)qtysum,SUM(Returned_Quantity_c__c)rtq  from DrugSale__c where (DateofSale__c> :fromdate and DateofSale__c< :todate) group by DrugSale__c.Drug_Name__c order by DrugSale__c.Drug_Name__c];
    List<Return_Supplier_Wise_Summary__c> existing = new List<Return_Supplier_Wise_Summary__c>([SELECT Name From Return_Supplier_Wise_Summary__c]);
    delete existing;
      for(Integer i=0;i<drgsl.size();i++)
    {
       rsws=new Return_Supplier_Wise_Summary__c();
       rsws.Drug_Name__c=(String)drgsl[i].get('medtyp');
       rsws.Selling_Qunatity__c=(Decimal)drgsl[i].get('qtysum');
       rsws.Returned_Quantity__c=(Decimal)drgsl[i].get('rtq');
      insert rsws;
    }
    rswsummary=[select Drug_Name__c,Selling_Qunatity__c,Returned_Quantity__c,Date_of_Sale__c,Expiry_Date__c from Return_Supplier_Wise_Summary__c];
     pieData= new List<PieWedgeData>();
    for(Integer k=0;k<rswsummary.size();k++)
  {   
   pieData.add(new PieWedgeData(rswsummary[k].Drug_Name__c,rswsummary[k].Selling_Qunatity__c,rswsummary[k].Returned_Quantity__c));
  }
    return null;
}
 public class PieWedgeData 
 {  
  public String DrugName{ get; set; }  
  public Decimal SellingQuantity{ get; set; }  
  public Decimal ReturnedQuantity{get;set;}
   
  public PieWedgeData(String drug, Decimal data,Decimal qnty) 
  {  
   this.DrugName=drug;  
   this.SellingQuantity= data;
     this.ReturnedQuantity=qnty;
     
  }  
 }  
Amit Chaudhary 8Amit Chaudhary 8
Please check below post. I hope that will help you
1) http://amitsalesforce.blogspot.in/search/label/Test%20Class
2) http://amitsalesforce.blogspot.in/2015/06/best-practice-for-test-classes-sample.html

Please try below code. I hope that will help you 
@isTest 
public class ReturnSupplierWiseSummaryctrlTest 
{
	static testMethod void testMethod1() 
	{
		DrugSale__c  ds = new DrugSale__c ();
		// Add all required field
		insert ds;
		
		Test.StartTest(); 

			Date fromdate = System.today();
			Date todate = System.today();
			
			PageReference pageRef = Page.AccountPlan; // Add your VF page Name here
			pageRef.getParameters().put('fromdate', String.valueOf(fromdate)  );
			pageRef.getParameters().put('todate', String.valueOf(todate)  );
			Test.setCurrentPage(pageRef);

			ReturnSupplierWiseSummaryctrl testAccPlan = new ReturnSupplierWiseSummaryctrl();
			testAccPlan.search();
		
		Test.StopTest();
	}
}



Please follow below salesforce Best Practice for Test Classes :-

1. Test class must start with @isTest annotation if class class version is more than 25
2. Test environment support @testVisible , @testSetUp as well
3. Unit test is to test particular piece of code working properly or not .
4. Unit test method takes no argument ,commit no data to database ,send no email ,flagged with testMethod keyword .
5. To deploy to production at-least 75% code coverage is required
6. System.debug statement are not counted as a part of apex code limit.
7. Test method and test classes are not counted as a part of code limit
9. We should not focus on the  percentage of code coverage ,we should make sure that every use case should covered including positive, negative,bulk and single record .
Single Action -To verify that the the single record produces the correct an expected result .
Bulk action -Any apex record trigger ,class or extension must be invoked for 1-200 records .
Positive behavior : Test every expected behavior occurs through every expected permutation , i,e user filled out every correctly data and not go past the limit .
Negative Testcase :-Not to add future date , Not to specify negative amount.
Restricted User :-Test whether a user with restricted access used in your code .10. Test class should be annotated with @isTest .
11 . @isTest annotation with test method  is equivalent to testMethod keyword .
12. Test method should static and no void return type .
13. Test class and method default access is private ,no matter to add access specifier .
14. classes with @isTest annotation can't be a interface or enum .
15. Test method code can't be invoked by non test request .
16. Stating with salesforce API 28.0 test method can not reside inside non test classes .
17. @Testvisible annotation to make visible private methods inside test classes.
18. Test method can not be used to test web-service call out . Please use call out mock .
19. You can't  send email from test method.
20.User, profile, organization, AsyncApexjob, Corntrigger, RecordType, ApexClass, ApexComponent ,ApexPage we can access without (seeAllData=true) .
21. SeeAllData=true will not work for API 23 version eailer .
22. Accessing static resource test records in test class e,g List<Account> accList=Test.loadData(Account,SobjectType,'ResourceName').
23. Create TestFactory class with @isTest annotation to exclude from organization code size limit .
24. @testSetup to create test records once in a method  and use in every test method in the test class .
25. We can run unit test by using Salesforce Standard UI,Force.com IDE ,Console ,API.
26. Maximum number of test classes run per 24 hour of period is  not grater of 500 or 10 multiplication of test classes of your organization.
27. As apex runs in system mode so the permission and record sharing are not taken into account . So we need to use system.runAs to enforce record sharing .
28. System.runAs will not enforce user permission or field level permission .
29. Every test to runAs count against the total number of DML issued in the process .


Please let us know if this post will help you
Chandra babu 2Chandra babu 2
Thanq amith i need This code how to write the test class.pls how to write this 


  for(Integer i=0;i<drgsl.size();i++)
    {
       rsws=new Return_Supplier_Wise_Summary__c();
       rsws.Drug_Name__c=(String)drgsl[i].get('medtyp');
       rsws.Selling_Qunatity__c=(Decimal)drgsl[i].get('qtysum');
       rsws.Returned_Quantity__c=(Decimal)drgsl[i].get('rtq');
      insert rsws;
    }
Amit Chaudhary 8Amit Chaudhary 8
Please try below code :- 
DrugSale__c ds = new DrugSale__c ();
// Add all required field
ds.DateofSale__c = System.today();
ds.DateofSale__c = System.today();
insert ds;

Date fromdate = System.today();
Date todate = System.today();

I found below issue in you main class as "DateofSale__c" should be > and < both will not match. So please pass the date and time in above code accordingly to SOQL. 
(DateofSale__c> :fromdate and DateofSale__c< :todate)