List index out of bound while testing [closed]

Question

Would like to seek for assistance, already debug my code but still error :(

@isTest static void fetch() {
    system.runAs(new User(Id = UserInfo.getUserId())){
        
        Account testAcc = new Account();
        testAcc.Name = 'Sample';
        testAcc.Bill_To_Code__c = '0080101010';
        testAcc.Branch_Code__c = '0080101010';
        testAcc.Branch_Name__c = 'Sample';
        insert testAcc;
    
        Event testEvent = new Event();
        testEvent.Subject = 'Test';
          testEvent.ActivityDate= date.today();
        testEvent.StartDateTime = date.today();
        testEvent.EndDateTime = dateTime.now(); 
        testEvent.Event_Type__c = 'Call';
        testEvent.Event_Sub_type__c = 'BRANCH CALL';
        testEvent.Location_Based__c = 'Home Base';
        testEvent.Related_to_Account__c = testAcc.Id;
        testEvent.Work_Plan__c = false;
        testEvent.Status__c = 'New';
        insert testEvent;
    
        Test.startTest();
            Id acct = GTA.fetch(testAcc.Id);
        Test.stopTest();
    } }

Here's my class

public class GTA {

@AuraEnabled
public static string fetch(string recordID){
    
   List<Event> oEvent = [SELECT Related_To_Account__c FROM Event WHERE Id=:recordID];
    
   return oEvent[0].Related_To_Account__c; } }

Error: System.ListException: List index out of bounds: 0
Trace: Class.GTA.fetch: line 8, column 1

Answer 1

Already solved, I figure out that my Id on the start test should be Event not Account

From:
Id acct = GTA.fetch(testAcc.Id);

To:
Id acct = GTA.fetch(testEvent.Id);