trigger WorkOrderCheckIN2 on OptimaPro__Work_Order__c (after update, after insert){
    if (trigger.isAfter){
        if (trigger.isUpdate || trigger.isInsert){
            for (OptimaPro__Work_Order__c newWorkOrder:Trigger.new) {
                List<OptimaPro__Work_Order_Line__c> Childs = new List<OptimaPro__Work_Order_Line__c>();
                // SET USERNAME STRING
                string username = '%'+UserInfo.getFirstName()+'%'; 
                //SET DEFAULT PRODUCTid
                Id ProductID = '01t46000000nPO0AAM'; 
                //MAP  IDMAPPRODUCT2
                List<Product2> idmapproduct2 = [Select Id FROM Product2 WHERE ProductCode like '%LAB %' AND ProductCode like :username]; 
                system.debug(idmapproduct2); 
                //CHECK IF MAP IS NULL AND IF NOT SET IT TO PRODUCT ID
                if(idmapproduct2 != null)
                    ProductID = idmapproduct2.get(0).Id;
                if(newWorkOrder.Check_In__c ==true){
                    OptimaPro__Work_Order_Line__c Child = new OptimaPro__Work_Order_Line__c();  
                    Child.RecordTypeId =[select Id from RecordType where Name = 'Labor'].id ;
                    Child.OptimaPro__MOBSVC_work_Order__c= newWorkOrder.id;
                    Child.OptimaPro__MOBSVC_Start_Date_and_Time__c = datetime.now();
                    Child.OptimaPro__MOBSVC_Line_Status__c = 'Open';
                    Child.OptimaPro__MOBSVC_Product__c = ProductID;
                    Childs.add(Child);
                    
                    insert Childs;
                }
            }
        }
    }
}

@isTest
private class WorkOrderCheckINTest2 {
    public static testMethod void WorkOrderCheckINTest2Method()
    {
        User u3 = [SELECT Id FROM User WHERE FirstName='Zach'];
        System.runAs(u3) {
            Account testAccount = new Account();
            testAccount.Name='Test Account';
            
            insert testAccount;
            
            OptimaPro__Work_Order__c testWorkOrder = new OptimaPro__Work_Order__c();
            testWorkOrder.OptimaPro__MOBSVC_Account__c= testAccount.id;
            testWorkOrder.Incoming_Voltage_Reading__c=230;
            testWorkOrder.Equipment_Hour_Reading__c=1300;
            testWorkOrder.Final_Amps_Reading__c=12;
            testWorkOrder.Incoming_Voltage_Reading__c=230;
            testWorkOrder.Initial_Pressure_Reading_PSI__c=1000;
            testWorkOrder.Initial_Spike_Reading_PSI__c=1800;
            testWorkOrder.Initial_Volume_Reading__c=4.0;
            testWorkOrder.Motor_Amps_Reading__c=12.25;
            testWorkOrder.Pump_Pressure_Reading_PSI__c=1200;
            testWorkOrder.Pump_Volume_Reading__c=5.5;
            testWorkOrder.What_Size_Nozzle_Is_Being_Used__c=4.0;
            testWorkOrder.Work_Preformed__c= 'test';
            testWorkOrder.Check_In__c = False;
            
            insert testWorkOrder;
            
           
            testWorkOrder.Check_In__c = True;
            update testWorkOrder;
            
        }
    }
}