Hi,

I'm unable to deploy my trigger, getting below errors as lack of test code coverage.

Failure Message: "line -1, column -1: Previous load of class failed: create_spr_controllertest", Failure Stack Trace: "null"

Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required

Below in red color is uncovered code. Its urgent , any help must be highly appreciated.

Here is the my code

Trigger:

trigger UpdateAccountID on Account(before update) {

Set<String> enteredValues = New Set<String>();
Set<String> accountids = New Set<String>();

    for(Account acc : trigger.new)
    {
         
       if(acc.AccountHold__c  != null && acc.AccountHold__c != acc.AccountID__c)
       {
          enteredValues.add(acc.AccountHold__c);
       }
    }

    if(!enteredValues.isEmpty())
    {
       UpdateAccountIDController uda = New UpdateAccountIDController();
       accountids = uda.checkUniqueness(enteredValues);
    }

    for(Account a : trigger.new)
    {
        if(!accountids.isEmpty())
        {
            if(!accountids.contains(a.AccountHold__c))
                a.AccountID__c = a.AccountHold__c;
        }
        else
        {
            if(a.AccountHold__c != null)
                a.AccountID__c = a.AccountHold__c;
        }
   
    }
}

Controller Class:

public class UpdateAccountIDController{

    public Set<String> checkUniqueness(Set<String> enteredValues)
    {
        List<Account> accountRecs = New List<Account>();
        Set<String> accountIds= New Set<String>();
        accountRecs = [SELECT
                        AccountID__c
                FROM
                        Account
                WHERE
                         AccountID__c in : enteredValues];

        for(Account a : accountRecs)
        {
            accountIds.add(a.AccountID__c);
        }
        return accountIds;   
    }
    
    
    static testMethod void testUpdateAccountIDController(){
    
        Set<String> AccIdHold = new Set <String>{'ACCID01','ACCID02', 'ACCID03', 'ACCID04'};
        Set<String> AccountIds = new Set <String>();
        Account acc = new Account(Name='Test Account',AccountID__c = 'DellACCID02');
        insert acc;
        List <Account> accList = [Select AccountID__c from Account where AccountID__c in : AccIdHold];
        for(Account a: accList){
            AccountIds.add(a.AccountID__c);
        }
        UpdateAccountIDController uda = new UpdateAccountIDController();
        uda.checkUniqueness(AccIdHold);
     }   
        
    
}

Test Class:

@ isTest
private class UpdateAccountIDTriggerTest{
    
  static testMethod void testUpdateAccountIDTrigger(){
 
     Set<String> changedIds = new Set<String>();
     Set<String> accountids = New Set<String>();
     
      Account acc = new Account(Name = 'Test Account',AccountHold__c = 'ACCID02',AccountID__c='ACCID01');
      insert acc;
      acc.AccountHold__c = 'ACCID03';
      update acc;
      changedIds.add(acc.AccountHold__c);
      UpdateAccountIDController uda = New UpdateAccountIDController();
      accountids = uda.checkUniqueness(changedIds);
    }
}

Thanks a lot in advance !

Regards,

SK