Hi All,

I am trying to create test code for the Milestone Utilities Class, Trigger on Case Comment, Trigger on Email Message that has been published at

https://developer.salesforce.com/index.php?title=Auto-completion_of_Case_Milestones_with_Triggers&oldid=33636&language=en

The code I have found that I thought would complte this but could be totally wrong is 

@istest

public class CompleteMilestone{
 
  // test methods
  static testMethod void testCompleteMilestoneCase(){
   
    Contact oContact = [select id from Contact limit 1];
    String contactId;
    if (oContact != null)
      contactId = oContact.Id;
   
    Entitlement entl = [select id from Entitlement limit 1];
    String entlId;
    if (entl != null)
      entlId = entl.Id;
   
    List<Case> cases = new List<Case>{};
    if (entlId != null){
      Case c = new Case(Subject = 'Test Case with Entitlement ', EntitlementId = entlId, ContactId = contactId);
      cases.add(c);
    }
   
    // Insert the Account records that cause the trigger to execute.
    if (cases.isEmpty()==false){
      insert cases;
      List<Id> caseIds = new List<Id>();
      for (Case cL : cases){
        caseIds.add(cL.Id);
      }
      milestoneUtils.completeMilestone(caseIds, 'Response MAC', System.now());
        }
    }
 
    static testMethod void testCompleteMilestoneViaCase(){
     
        // Perform data preparation
        Entitlement entl = [select id from Entitlement limit 1];
        String entlId;
        if (entl != null)
            entlId = entl.Id;
        List<Case> cases = new List<Case>{};
        for(Integer i = 0; i < 1; i++){
            Case c = new Case(Subject = 'Test Case ' + i);
            cases.add(c);
            if (entlId != null){
                c = new Case(Subject = 'Test Case with Entitlement ' + i, EntitlementId = entlId);
                cases.add(c);
            }
        }
       
        // Insert the Account records that cause the trigger to execute.
        insert cases;

        List<CaseComment> ccs = new List<CaseComment>{};
        for(Case c : cases){
            CaseComment cc = new CaseComment(CommentBody='TestPublic', IsPublished=true, ParentId=c.Id);
            ccs.add(cc);
            cc = new CaseComment(CommentBody='TestPrivate', IsPublished=true, ParentId=c.Id);
            ccs.add(cc);
        }
        if (ccs.isEmpty()==false)
            insert ccs;
   
    // Now create emailmessage objects for them.
   
        List<EmailMessage> emails = new List<EmailMessage>();
        for(Case c : cases){
            emails.add(new EmailMessage(parentId = c.id));
        }
        if(emails.isEmpty()==false)
            database.insert(emails);
       
        for(Case c : cases){
            Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
            String[] toAddr = new String[] {'mramsey@salesforce.com'};
            mail.setToAddresses(toAddr);
            mail.setSaveAsActivity(false);
            mail.setTargetObjectId(c.ContactId);
            mail.setWhatId(c.Id);
            mail.setHtmlBody('TestHTMLBody');
            mail.setPlainTextBody('TestTextBody');
            Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
        }
   
    for(Case c : cases){
      c.Status = 'Closed';
    }
    update cases;
   
        // Query the database for the newly inserted records.
        List<Case> insertedCases = [SELECT Subject,
                                           Description,
                                          (SELECT IsPublished, CommentBody From CaseComments),
                                          (SELECT TextBody, Subject, Incoming From EmailMessages)
                                           FROM Case
                                           WHERE Id IN :cases];
    }
}

But when I run the test it fails on line 8 colum 1
Contact oContact = [select id from Contact limit 1];

and line 38 column 1
Entitlement entl = [select id from Entitlement limit 1];

both have the following error

System.QueryException; List has no rows for assigment to Sobject

Thanks in advance for any help/pointers you give me