Error with Scheduled Batch Classes

Question

I have 2 batch Apex classes that update Account fields from different custom objects. I was running into issues of accessing records and found a way to run the batches in order. The test class for my 1st batch runs and covers my classes. When I run the 2nd test class, I get the following error & Stack Trace:

System.StringException: Only CronTrigger IDs and batch, future, and queueable job IDs are supported.

Class.AccountTotalReferralsBatch.finish: line 23, column 1

Can anyone help me resolve this error?

Batch Class:

public class AccountTotalReferralsBatch implements Database.Batchable<sObject> {
    public Database.QueryLocator start(Database.BatchableContext context) {
        return Database.getQueryLocator([SELECT Id FROM Account]);
    }
    public void execute(Database.batchableContext context, Account[] scope) {
        Map<Id, AggregateResult> results = new Map<Id, AggregateResult>([
            SELECT Account__c Id, COUNT(Id) amt 
            FROM Referral__c 
            WHERE Account__c = :scope AND Age__c<366 GROUP BY Account__c]);
            
        for(Account record: scope) {
            AggregateResult amount = results.get(record.Id);
            if(amount != null) {
                record.Referrals__c = (Decimal)amount.get('amt');
            } else {
                record.Referrals__c = null;
            }
        }
        update scope;
    }
    public void finish(Database.BatchableContext bc) {
        BatchSchedule__c b = BatchSchedule__c.getOrgDefaults();
            System.abortJob(b.Scheduled_Id__c);
    }         
}

Scheduler Class:

global class AccountTotalReferralsSchedule implements Schedulable{
    global void execute(SchedulableContext sc){
        AccountTotalReferralsBatch ref = new AccountTotalReferralsBatch();
        database.executebatch(ref,200);
    }
}

Test Class:

@istest (SeeAllData=FALSE)
public class AccountTotalReferralsTest{
    
    public static testmethod void testBatch1() {
        Test.startTest();
        
        Account account = TestUtility.createAccount('Prospect', Constants.RECORDTYPEID_ACCOUNT_FAMILY);
        insert account;
        
        Contact contact = TestUtility.createContact(account.Id, Constants.RECORDTYPEID_CONTACT_FAMILY, 'Primary');
        insert contact;
        
        Encounters__c encounter = TestUtility.createEncounter(account.Id, contact.Id, '', '');
        insert encounter;
        
        BatchSchedule__c batchSchedEnc = new BatchSchedule__c();
        insert batchSchedEnc;
        
AccountTotalReferralsBatch();

            string chron = '0 0 23 * * ?';
            string jobid = System.schedule('testScheduledApex', chron, new AccountTotalEncountersSchedule());
            CronTrigger ct = [Select id , CronExpression from CronTrigger where id = :jobId];

        Referral__c testRef = new Referral__c();
        testRef.Name = 'Test';
        testRef.Account__c = account.Id;
        insert testRef;

        batchSchedEnc = [SELECT Id,Scheduled_Id__c FROM BatchSchedule__c WHERE ID =: batchSchedEnc.Id];
            batchSchedEnc.Scheduled_Id__c = ct.Id;
        
        AccountTotalReferralsBatch testBatch = new AccountTotalReferralsBatch();
        
        Database.executebatch(testBatch);        
        Test.stopTest();
    }
}

Answer 1

Looks like you're just missing update batchSchedEnc; after the line batchSchedEnc.Scheduled_Id__c = ct.Id;