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Hema!Hema! 

how to write test class for bellow code....

public class sample1
{
    public String state {get;set;}
    public String city {get;set;}
    public String Village {get;set;}
  // public String city {get;set;}

    public List<SelectOption> getStates()
    {
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption('None','--- None ---'));        
        options.add(new SelectOption('TN','Tamil Nadu'));
        options.add(new SelectOption('KL','Kerala'));
         options.add(new SelectOption('KA','Karnataka'));
          options.add(new SelectOption('AP','Andhrapradesh'));
                 
        return options;
    } 
                     
    public List<SelectOption> getCities()
    
    {
        List<SelectOption> options = new List<SelectOption>();
        if(state == 'TN')
        {       
            options.add(new SelectOption('CHE','Chennai'));
            options.add(new SelectOption('CBE','Coimbatore'));
        }
        else if(state == 'AP')
        {       
            options.add(new SelectOption('KUR','Kurnool'));
            options.add(new SelectOption('KDP','Kadapa'));
        }
        
        else if(state == 'KL')
        {       
            options.add(new SelectOption('COA','Coachin'));
            options.add(new SelectOption('MVL','Mavelikara'));
        }
        
        
        else if(state == 'KA')
        {       
            options.add(new SelectOption('BAN','Bangalore'));
            options.add(new SelectOption('My','Mysure'));
        }
        
        else
        {
            options.add(new SelectOption('None','--- None ---'));
        }      
        return options;
    }       
   
   
      public List<SelectOption> getvillages()
    {
            
   system.debug('city '+city );
    List<SelectOption> options = new List<SelectOption>();
          
          
        // options.add(new SelectOption('None','--- None ---')); 
          //List<SelectOption> options = new List<SelectOption>();
          
        if(City == 'KUR')
        {       
            options.add(new SelectOption('AL','ALur'));
            options.add(new SelectOption('AD','Adoni'));
        }
          
           else if(City == 'KDP')
        {       
            options.add(new SelectOption('A','a1'));
            options.add(new SelectOption('B','b1'));
        }
        
         else if(City == 'CHE')
        {       
            options.add(new SelectOption('c','c1'));
            options.add(new SelectOption('d','d1'));
        }
        
         else if(City == 'CBE')
        {       
            options.add(new SelectOption('e','e1'));
            options.add(new SelectOption('f','f1'));
        }
        
         else if(City == 'COA')
        {       
            options.add(new SelectOption('g','g1'));
            options.add(new SelectOption('h','h1'));
        }
        
         else if(City == 'MVL')
        {       
            options.add(new SelectOption('i','i1'));
            options.add(new SelectOption('j','j1'));
        }
        
         else if(City == 'BAN')
        {       
            options.add(new SelectOption('k','k1'));
            options.add(new SelectOption('l','l1'));
        }
        
         else if(City == 'My')
        {       
            options.add(new SelectOption('m','m1'));
            options.add(new SelectOption('n','n1'));
        }
        
          else
        {
            options.add(new SelectOption('None','--- None ---'));
        } 
          
     return options;  
    } 
}


Thanks In Advance....

 
Best Answer chosen by Hema!
Ajay K DubediAjay K Dubedi
Hi Hema,
Below is test class which cover 100% code coverage of your code. 
Test Class:
@isTest
public class sample1_test {
@isTest static void testgetStates()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.Village='Koderma';
       sam.getStates();
       Test.stopTest();
   }
   @isTest static void testgetCities1()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='TN';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities2()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='AP';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities3()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='KL';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities4()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='KA';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities5()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='AA';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetvillages1()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='KUR';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages2()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='KDP';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages3()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='CHE';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages4()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='CBE';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages5()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='COA';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages6()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='MVL';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages7()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='BAN';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages8()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='My';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages9()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='AAA';
       sam.getvillages();
       Test.stopTest();
   }
}
Hope this will be help you!

Regards,
Ajay
 

All Answers

Ajay K DubediAjay K Dubedi
Hi Hema,
Below is test class which cover 100% code coverage of your code. 
Test Class:
@isTest
public class sample1_test {
@isTest static void testgetStates()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.Village='Koderma';
       sam.getStates();
       Test.stopTest();
   }
   @isTest static void testgetCities1()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='TN';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities2()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='AP';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities3()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='KL';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities4()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='KA';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetCities5()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.state='AA';
       sam.getCities();
       Test.stopTest();
   }
   @isTest static void testgetvillages1()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='KUR';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages2()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='KDP';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages3()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='CHE';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages4()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='CBE';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages5()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='COA';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages6()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='MVL';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages7()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='BAN';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages8()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='My';
       sam.getvillages();
       Test.stopTest();
   }
   @isTest static void testgetvillages9()
   {
       Test.startTest();
       sample1 sam = new sample1();
       sam.City='AAA';
       sam.getvillages();
       Test.stopTest();
   }
}
Hope this will be help you!

Regards,
Ajay
 
This was selected as the best answer
Hema!Hema!
Hi Ajay,

 Great work 100 % code covarage... Thank you so much...

Thanks 
Hema!