I have a small trigger that will not allow a contact to be deleted if the contact is part of a active Ship_To for a entitlement. If the contact.Id is found to be in a active  record then prevent the deletion by calling the addError() to notify the user.

The problem is writting a test method. If my test method actually tries to delete the contact then, of course, the addError is called but then the test class fails because of the addError. If I change the test method not to try and delete the contact then, of course, that section of code is never execute... BUT the % of covered code is only 40%. Is there away to boost the %  ? I can add a bunch of extra lines like; Integer Count2 etc... to rais ethe %  but it seems there should be a better way.

trigger ValidateContact on Contact (before delete) {
// This trigger prevents the deletion of any Contact that
// has an associated ShipTo.  
    // Trigger.oldMap is a trigger context variable that maps Ids to every
    // Contact that is about to be deleted. 
    // Create a list of associated ShipTo's:
    

Integer Count = 1;
    for (Ship_To__c s : [select Contact__c, Contract_Number__c,Contact_Salutation_First_and_Last_Name__c, Entitlement_Status__c   from Ship_To__c
                       where Contact__c in :Trigger.oldMap.keySet() ]) {

        // For every ShipTo that is active, retrieve the related ShipTo
        // from Trigger.oldMap and prevent it from being deleted by placing
        // an error message on the Contact.
        if(s.Entitlement_Status__c == 'Current' ||s.Entitlement_Status__c == 'In Progress' ||s.Entitlement_Status__c == 'Expired' )
        {
       Trigger.oldMap.get(s.Contact__c).addError(
         'Cannot delete this contact: ' + s.Contact_Salutation_First_and_Last_Name__c + ' because they are specified as a ShipTo Contact in a Current, In Progress or Expired Asset or Entitlement. Contract =  '+ s.Contract_Number__c + '.  Number of Entitlements found for this Contact: ' + Count);
        Count++;
        }
     }
  }

  Here's the Test method:

static testMethod void testValidateContactTrig()
    {
        Account a = new Account(Name='Helen Account Trigger Test');
        insert a;
       
        Contact c = new Contact(accountid=a.Id, lastname='MyLastName', Status__c='Active');
        insert c;
       
       Opportunity  opp = new Opportunity();
        opp.Name='Test';
        opp.CurrencyIsoCode = 'USD';   
        opp.AccountId = a.Id;
        opp.Type = 'Term';
        opp.Type_2__c = 'Tools';
        opp.Sector__c = 'Academic';
        opp.CloseDate = system.today();
        opp.StageName = 'Proposal';
        opp.ForecastCategoryName = 'Pipeline';
        opp.OwnerId = '00550000000n1k8';
        insert opp;
       
      Contracts__c  con = new Contracts__c();
        con.Contract_Name__c='Test';
        con.CurrencyIsoCode = 'USD';
        con.Opportunity__c = opp.Id;
        con.Status__c = 'In Progress'; 
        con.Contract_Type__c = 'Renewal'; 
 
        insert con;
               
      Asset_Entitlement__c asset = new Asset_Entitlement__c(); 
        asset.Account_del__c = opp.AccountId;             
        asset.Opportunity_Owner__c = opp.OwnerId;     
        asset.CurrencyIsoCode = opp.CurrencyIsoCode;      
        //asset.Product__c = pricebookMap.get(oppLines.PricebookEntryId).Product2.Id;                              
        asset.End_Date__c = system.today() - 10;       
        asset.Invoice_Date__c = system.today();       
        asset.Unit_Price__c = 12;       
        asset.Opportunity__c = opp.Id;
        asset.Start_Date__c = system.today();                  
        asset.Status__c = 'Expired';
        asset.Entitlement_Status__c = 'In Progress';
        asset.Term__c = 12;       
        asset.RecordTypeId = '012500000001C2f';
        asset.Contracts__c = con.Id;                
        asset.Quantity__c = 1;
        asset.DNR__c = false;
        asset.Renew_Flag__c = false; 
        asset.Part_Number__c = '2091Test-MNT';   //THS 3/5/2009
        asset.License_Type__c = 'Term'; 
        insert asset;
       Ship_To__c ST = new Ship_To__c();
         ST.Asset_Entitlement__c = asset.Id;
         ST.Contact__c = c.Id;
         ST.Contact_Touch_Count__c = null;
         insert ST;
        //delete c; // try to delete contact that
    }