I have written test class for below class but code percentage i am getting 29 only would you please give solution for it 



Test Class
-----------------
@isTest
public class CustSearchTest {
    testmethod static void testme()
 {
        
        List<Contact> conlist=new List<Contact>();
  Contact testcon = new Contact();
  testcon.lastname='testcon1' ;
        testcon.FirstName= 'Anil'; 
      testcon.Email = 'ram@gmail.com';
        testcon.MobilePhone= '9898561236';
        conlist.add(testcon);
        
        Contact testcon1 = new Contact();
  testcon1.lastname='testcon12' ;
        testcon1.FirstName= 'Anil2'; 
      testcon1.Email = 'ram2@gmail.com';
        testcon1.MobilePhone= '9898561136';
  conlist.add(testcon1);
        
        insert conlist;
        
        test.startTest();
  
   ApexPages.StandardController sc = new ApexPages.StandardController(testcon);
            CustSearch cs= new CustSearch(sc);
   
   
  test.stopTest();
    }
    
}

apex class:
-----------------
public class CustSearch {
    
    public contact con{set;get;}
    public list<contact> cont {set;get;}
    
    public CustSearch(Apexpages.StandardController controller){
        cont = new list<contact>();
    // list<string> str = new list<string>{'FirstName','LastName','Email','AccountId','Account.name', 'Customer_Account_Number__c'};  
   
        list<string> str = new list<string>{'FirstName','LastName','Email'};  
            if (!Test.isRunningTest()){
        controller.addFields(str);
        con = (contact)controller.getRecord();  
   
            }
   
    }


    Class
---------------------------
    public void search(){
     transient String lastname= '%'+con.LastName+'%';
     transient string firstname = '%'+con.FirstName+'%';
     transient string email1 = '%'+con.Email+'%';
    transient id accName = con.Accountid;
   //transient String acctno = '%'+con.Customer_Account_Number__c+'%';
   
   transient String mStreet = '%'+con.MailingStreet+'%';
  
        System.debug(accName);
        System.debug(con.AccountId);
        cont = [select id,firstname,lastname,email,phone,contact.account.name, MailingStreet, MailingCity, MailingPostalCode, MailingState  from contact where firstname like : firstname OR lastname like : lastname OR email like : email1 OR MailingStreet like : mStreet  ];
     
            
        if(cont.size()==0)
       ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.Error, ' No Matching Contact Records Found '));

       System.debug(cont.size());
        
    }
  

}