Hi Vinita,

Thanks for the reply.

But what I need is different.
In Registrant__c object I am having a field Status__c.
If a registrant record is inserted/updated with 'Approved' value.
I am calling a method to insert a contact. And from that method I am calling a future method to create a user.

If a registrant is updated with status as 'Deactivated', then I am calling a future method to deactivate the corresponding user.
//trigegr to create users, if registrant status is 'Approved'
trigger insertTrigger on Registrant__c(after insert)
{
      List<Registrant__c> listOfRegistrants=new List<Registrant__c>();
      for(Registrant__c reg:Trigger.new)
      {
        //checking if status is 'Approved' and adding to listOfRegistrants
     }
     HandlerClass.createContact(listOfRegistrants);
}

//trigger to create/deactivate users based on the registrant record's status
trigger updateTrigger on Registrant__c(after insert)
{
         List<Registrant__c> listOfActivateRegistrants=new List<Registrant__c>();
          List<Registrant__c> listOfDeactivateRegistrants=new List<Registrant__c>();
          for(Registrant__c reg:Trigger.new)
          {
            //checking if status has become 'Approved' and adding tolistOfActivateRegistrants
           //checking if status has become 'Deactivated' and adding to listOfDeactivateRegistrants
         }
        HandlerClass.createContact(listOfActivateRegistrants);
       Set<String> setOfUserNames;
         ---prepared the SetOfUserNames by iterating and adding email ids of registrants from listOfDeactivateRegistrants
         HandlerClass.deActivateUsers(setOfUserNames);
}
//handler class
public class HandlerClass
{
     public static void  createContact(List<Registrant__c> listOfRegs)
     {
         //inserting the contacts
         CreateUsers(requiredParameters);
     }
    //Method to create users asynchronously
      @future
       public static void  CreateUsers(requriedParameters)
      {
           //creating users
     }
      //Method to deactivate users, asynchrounously
         @future
          public staitic void deActivateUsers(Set<string> setOfUsernames)
           {
                //deactivating the users by making isActive as false
           }

}

//Test class for checking Deactivation of user
public class sampeTestClass()
{
      public static void insertTestdata()
      {
              registrant__c newreg=new registrant__c(FirstName__c='Sam',LastName__c='Ram', Email='Sample@test.com',  Status__c='Approved' (mailto:Email='Sample@test.com',  Status__c='Approved'));
             insert newReg;
    }
    public static testMethod void deactivateUser()
    {
          Test.startTest();
         
           insertTestdata();// -- to create a registrant and a user
           newReg=[SELECT id,Status__c FROM Registrant__c  WHERE EmaiL__c=='Sample@test.com'];
           newReg.status__c='Deactivated'
           update newReg;
            Test.stopTest();
            User testUsr=[SELECT id,isActive FROM User  WHERE  Email='Sample@test.com'];
           System.assertEquals(false,testUsr.isActive);
    }
}

--Assert statement in the above test class is failing