I have a class with two methods.  The main method pulls data from the db and creates a list of Opportunities.  The PageReference method creates a document using a Page that pulls it's data from the main method.  It thens saves this PDF in the Documents folder and as an Attachment on the Opportunity. 

I have written test methods for both pieces of code but I'm stuck at 55% coverage.  I'm trying to figure out what I'm missing.  Thank you in advance.

    public class ProbeQuote {
        Schema.DescribeFieldResult F = Product2.Family.getDescribe();
        List<Schema.PicklistEntry> P = F.getPicklistValues();

        public Opportunity Probe { get; set; }

        public String pdfName;

        public ID id = ApexPages.CurrentPage().getParameters().get('id');

        public List<Opportunity> ProbeProducts = new List<Opportunity>();

        Integer Counter = 1;

        public ApexPages.StandardController controller;

        public ProbeQuote(ApexPages.StandardController stdController) {
            controller = stdController;
            //quoteid = stdController.getRecord().id;
            //ID id = '0068000000NyTHe';

            for (Schema.PicklistEntry fam:P){
            Integer i = 0;
            String FamilyLabel = fam.GetLabel();

            Probe = [SELECT o.Id, o.Name, o.Amount, o.ProductFamily__c, (SELECT op.Quantity, op.UnitPrice,
               op.TotalPrice,op.PricebookEntry.Name, op.OpportunityId, op.PricebookEntry.ProductCode,
               op.PricebookEntry.Product2.Family, op.LineCount__c 
               FROM OpportunityLineItems op WHERE op.PricebookEntry.Product2.Family = :FamilyLabel)
               FROM Opportunity o where Id = :id];

            Probe.Amount = 0;
            Probe.ProductFamily__c = FamilyLabel;

            for(i=0;i<Probe.opportunityLineItems.size();i++) {
                Probe.Amount += Probe.opportunityLineItems[i].TotalPrice;  
                Probe.opportunityLineItems[i].LineCount__c = Counter;
                Counter++;
            }

            ProbeProducts.add(Probe);
            }
        }

        public List<Opportunity> getProbeProducts() {
            return ProbeProducts;
        }

        public PageReference attachQuote() {
            Opportunity Opp = [SELECT o.Id, o.Name, o.Amount, o.ProductFamily__c 
            FROM Opportunity o where Id = :id]; 

            pdfName = Opp.Name + '.pdf';

            /* Get the page definition */
            PageReference pdfPage = new PageReference( '/apex/ProbeQuote' );

            /* set the quote id on the page definition */
            pdfPage.getParameters().put('id',id);

            /* generate the pdf blob */
            Blob pdfBlob = pdfPage.getContent();

            /* create the attachment against the quote */
            Attachment a = new Attachment(parentId = id, name=pdfName, body = pdfBlob);

            /* insert the attachment */
            insert a;

            /* Now create document to show up in Documents Tab in Quotes Folder */

            Folder f = [SELECT Id, Name FROM Folder WHERE Name = 'Quotes'
            AND Type = 'Document'];

            Document d = new Document();

            d.Name = pdfName;

            //d.DeveloperName = pdfName;

            d.ContentType = 'application/pdf';

            d.Body = pdfBlob;

            d.FolderId = f.Id;

            insert d;


            /* send the user back to the quote detail page */
            return controller.view();
        }

        public static testMethod void testProbeQuote() {
            Id id;
            Opportunity testProbe;
            List<Opportunity> testProbeProducts = new List<Opportunity>();
            Integer Counter = 1;

            Schema.DescribeFieldResult F = Product2.Family.getDescribe();
            List<Schema.PicklistEntry> P = F.getPicklistValues();

            Opportunity testOppty = new opportunity (Name = 'Force Monkey 4x4',
            StageName = 'Prospect', Amount = 2000, CloseDate = System.today() );

            insert testOppty;

            id = testOppty.id;

            // Insert test Truck OpportunityLineItem

            OpportunityLineItem testOLI = new OpportunityLineItem (Quantity = 5,
            UnitPrice = 100, OpportunityId = testOppty.id, PricebookEntryId = '01u80000002XFfKAAW');

            insert testOLI;

            for (Schema.PicklistEntry fam:P){
                Integer i = 0;
                String FamilyLabel = fam.GetLabel();

                testProbe = [SELECT o.Id, o.Name, o.Amount, o.ProductFamily__c, (SELECT op.Quantity, op.UnitPrice, op.TotalPrice,op.PricebookEntry.Name, op.OpportunityId, op.PricebookEntry.ProductCode, op.PricebookEntry.Product2.Family, op.LineCount__c 
                    FROM OpportunityLineItems op WHERE op.PricebookEntry.Product2.Family = :FamilyLabel)
                    FROM Opportunity o where Id = :id];
                                testProbe.Amount = 0;
                testProbe.ProductFamily__c = FamilyLabel;

                for(i=0;i<testProbe.opportunityLineItems.size();i++) {
                    testProbe.Amount += testProbe.opportunityLineItems[i].TotalPrice;  
                    testProbe.opportunityLineItems[i].LineCount__c = Counter;
                    Counter++;
                }

                testProbeProducts.add(testProbe);
            }


            PageReference pg = Page.yourVFpageName; Test.setCurrentPage(pg); ApexPages.currentPage().getParameters().put('id', testOppty.id);

            // Instantiate custom ProbeQuote controller

            //testProbeProducts.add(testOppty);

            System.assertEquals (testProbeProducts[0].Name, 'Force Monkey 4x4');

            ApexPages.StandardController stc = new ApexPages.StandardController(testOppty);
            ProbeQuote qe = new ProbeQuote(stc);
        }

        public static testMethod void  testattachQuote() {
            String pdfName;

            Opportunity testOppty = new opportunity (Name = 'Force Monkey 4x4',
            StageName = 'Prospect', Amount = 2000, CloseDate = System.today() );

            insert testOppty;

            ID id = testOppty.id;

            // Insert test Truck OpportunityLineItem

            OpportunityLineItem testOLI = new OpportunityLineItem (Quantity = 5,
            UnitPrice = 100, OpportunityId = testOppty.id, PricebookEntryId = '01u80000002XFfKAAW');

            insert testOLI;

            pdfName = testOppty.Name + '.pdf';

            /* Get the page definition */
            PageReference pdfPage = new PageReference( '/apex/ProbeQuote' );

            /* set the quote id on the page definition */
            pdfPage.getParameters().put('id',id);

            /* generate the pdf blob */
            Blob pdfBlob = pdfPage.getContent();

            /* create the attachment against the quote */
            Attachment a = new Attachment(parentId = id, name=pdfName, body = pdfBlob);

            /* insert the attachment */
            insert a;

            /* Now create document to show up in Documents Tab in Quotes Folder */

            Folder f = new Folder (Name = 'Quotes', Id = '00l80000001DJ2aAAG', Type = 'Document');

            System.assertEquals (f.Name, 'Quotes');

            Document d = new Document(Name = pdfName, ContentType = 'application/pdf',
            Body = pdfBlob, FolderId = f.Id);

            insert d;

            PageReference pg = Page.yourVFpageName; Test.setCurrentPage(pg); ApexPages.currentPage().getParameters().put('id', testOppty.id);

            // Instantiate custom ProbeQuote controller

            ApexPages.StandardController stc = new ApexPages.StandardController(testOppty);
            ProbeQuote qe = new ProbeQuote(stc);

        }

    }