Salesforce - @testsetup method : Spring 15 release

TestAccountCommon

@isTest  
 public class TestAccountCommon {  
      // setup test data for entire test methods in teh test class  
   @testSetup static void setup(){  
     List<Account> lstAccounts = new List<Account>();  
     for(integer i = 0;i<5; i++){  
       lstAccounts.add( new Account(  
         FirstName = 'Test'+i,  
         LastName = 'user',  
         PersonEmail = 'test'+i+'@.com',  
       ));  
     }   
     insert lstAccounts;  
   }  
      // test method 1 which usues defined test data  
   @isTest static void Test_TestAccount_001() {  
           //get the setup data by SOQL  
     List<Account> updatedAccounts = [SELECT Id, isCheckDate__c FROM Account WHERE isCheck__c =: true];  
           system.assertEquals(  
         5,  
         updatedAccounts.size(),  
         'Test_JobApplicationCommon_002: size of the retrieved accounts would be 5'  
       );  
     for(Account acc : updatedAccounts){  
       acc.isCheck__c = true;  
     }  
           // update test data  
     update updatedAccounts;  
     for(Account acc : updatedAccounts){  
       system.assertEquals(  
         Date.today(),  
         acc.isCheckDate__c,  
         'Test_JobApplicationCommon_002: The isCheckDate__c should be updated as todate'  
       );  
     }  
   }  
      // test method 2 which usues defined test data  
      @isTest static void Test_TestAccount_002() {  
           //get the setup data by SOQL  
     List<Account> updatedAccounts = [SELECT Id, isCheckDate__c FROM Account WHERE isCheck__c =: true];  
           //new test method has initialized test data.  
           system.assertEquals(  
                5,  
                updatedAccounts.size(),  
                'Test_JobApplicationCommon_002: still the size of the retrieved accounts would be 5'  
           );  
   }  
 }