Hi, I'm begging for help 1 more time.

I have a trigger that compiles fine (thanks Drew). I cannot deploy it to the server, because of an error I get
that points to my testmethod (even though, I can run my test class and deploy it to the server). Could you
give me any insight to creating these test classes? Thank you.

trigger CreateCaseAfterShippingConfirmsOrder on SFDC_520_QuoteLine__c(after insert, after update)
{
    List<Id> myIDs = new List<Id>{}; //use this to store all the Product2 Ids to query for
       
    for (SFDC_520_QuoteLine__c obj : Trigger.new)
        {
            myIDs.add(obj.Product2__c) ;
        }
    //Need to move the SOQL Query out of the FOR LOOP otherwise you'll hit a governor limit in some scenarios
    Map<Id,Product2> productMap = new Map<Id,Product2>([select name  from Product2 where ProductCode IN :myIDs]);
   
    //Now loop through records again
    for (SFDC_520_QuoteLine__c obj : Trigger.new)
    { 
         if (obj.Shipping_Confirms_Order__c == True)
             {
                   Case newCase = new Case(
                     //Use the Map to get the Product2 Name out of the Map generated by the SOQL query above
                     Description = productMap.get(obj.Product2__c).Name + ' ' + obj.Description__c,
                     Subject = 'New Data Production Project',
                     Status = 'Not Started',
                     Product__c = 'Custom Data',
                     Priority = 'Sev-4 (when resources allow)',
                     Origin = 'Web'
                     );
                     insert newCase;
             }
     }
 }         


@isTest
public class TestClass {
  static testMethod void myTest() {
      SFDC_520_Quote__c q = [select id from SFDC_520_Quote__c where name='08-30287'];
    SFDC_520_QuoteLine__c LI = new SFDC_520_QuoteLine__c(Quote__c = q.ID,Shipping_Confirms_Order__c= true);
    insert LI; //this line is where the error is when I try to deploy the trigger
 }
}