I have a class that I have 69% tes coverage.  The lines that are refernced as not tested are some of the if statements or Apexpage references.  How has anyone else resolved this testing?

public class ProdCase {
        //private final Opportunity o;
        private Opportunity o;
        
        
        public ProdCase(ApexPages.StandardController stdController) {
                this.o = (Opportunity)stdController.getRecord();
                this.o = [Select Implementation_Contac__c from Opportunity where id =: this.o.id];
        }
        //For testability
        public ProdCase(Opportunity o) {
                this.o = o;
        }
        
//capture the opportunity id from the button
                public PageReference prodDetails(){
                        String theID = ApexPages.currentPage().getParameters().get('id');
                        if (theID == null){
                                return null;
                        }
                        return prodDetails(theID);
                }
                
                 public PageReference prodDetails(String theID){
                 
                        

//Build Oportunity Line Item List object with results from the matching records of the query
                        List<OpportunityLineItem> lin = [Select 
                        o.UnitPrice,
                        o.TotalPrice,
                        o.ListPrice,
                        o.Id,
                        o.Opportunity.Pricebook2Id,
                        o.PricebookEntryId,
                        o.ServiceDate,
                        o.Quantity,
                        o.Description,
                    	o.Transmission_Mode__c,
                        o.Opportunity.Name,
                        o.Opportunity.StageName,
                        o.Opportunity.Type,
                        o.Opportunity.Estimated_Implementation_Date__c,
                        o.Opportunity.Opportunity_States__c,
                        o.Opportunity.Implementation_Contac__c, 
                        o.Opportunity.Implementation_Program__c
                        From OpportunityLineItem o where o.OpportunityId =:theID and o.Implementation_Validation__c != true];   
                          //List<OpportunityLineItem> lin = [Select(Select UnitPrice, TotalPrice, 
                          //Quantity, ListPrice, Id From OpportunityLineItem WHERE Implementation_Validation__c != true)o.Name from Opportunity o where o.id =:theID] ;
                          
                          if (o.Implementation_Contac__c == null){
                                ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.CONFIRM, 'The Implementation Contact has not been assigned, please correct and resubmit!');
                                ApexPages.addMessage(myMsg);
                                return ApexPages.currentPage(); 
                         }


//Build 
                        list<Case> ToInsert = new list<Case>();
                                for(Integer I = 0; I < lin.size(); I++){
        
                                        //create the case object 
                                        Case cas = new Case();

/*
Determine if the Opportuntiy is a Submitter, Vendor, or Receiver Opportuntiy and create the
correct case record type.
*/ 
        String oliID = lin[I].PricebookEntryId;
        List<PriceBookEntry> prd = [Select p.Product2Id from PricebookEntry p where Id =:oliID ];
        
        for(Integer ic = 0; ic < prd.size(); ic++){
                cas.Related_Products__c=prd[ic].Product2Id;
        
    }
        
        if(lin[I].Opportunity.Type == ('Submitter')){           
                 cas.RecordTypeId='012600000004vNEAAY';
                //Owner equals Ann Shelton
                cas.OwnerId='00560000000lh2zAAA';       
        }else if(lin[I].Opportunity.Type ==('Vendor')){ 
                cas.RecordTypeId='012600000004vacAAA';
                //Owner equals Ann Shelton
                cas.OwnerId='00560000000lh2zAAA';       
        }else { 
                cas.RecordTypeId='012600000004vN9AAI';
                //Owner equals Cyn Criss
                cas.OwnerId='00560000000lfXlAAI';               
        }
 
    	cas.Implementation_Name__c=lin[I].Opportunity.Name;
   		cas.Status='Business Development';
   		cas.Projected_Transactions__c=lin[I].Quantity;
   		cas.States__c=lin[I].Opportunity.Opportunity_States__c;
    	cas.ContactId=lin[I].Opportunity.Implementation_Contac__c;
        cas.Description=lin[I].Description;
        cas.Subject=lin[I].Opportunity.Name;
        cas.Implementation_Program__c=lin[I].Opportunity.Implementation_Program__c;
        
        //Sandbox
        //cas.Opportunity_Link__c='tapp0.salesforce.com/'+lin[I].OpportunityId;
        
        //Prd
        cas.Opportunity_Link__c='na4.salesforce.com/'+lin[I].OpportunityId;
        cas.Estimated_Implementation_Date__c=lin[I].Opportunity.Estimated_Implementation_Date__c;
        cas.Estimated_Live_Date__c=lin[I].ServiceDate;
//      cas.Related_Products__c=prd[ic].Product2Id;
        

//Sets the validation field true so that you can not submit a line item case more than once.                                    
    lin[I].Implementation_Validation__c = true;
    
//Insert the cas object into the ToInsert list.    
    ToInsert.add(cas);
    
  }
// Inserts all the objects within the ToInsert list 
  insert ToInsert;
  update lin;
  
        PageReference pageRef = new PageReference('/' + theId);
        pageRef.setRedirect(true);
        return pageRef;
        }
}

/**
 * This class contains unit tests for validating the behavior of Apex classes
 * and triggers.
 *
 * Unit tests are class methods that verify whether a particular piece
 * of code is working properly. Unit test methods take no arguments,
 * commit no data to the database, and are flagged with the testMethod
 * keyword in the method definition.
 *
 * All test methods in an organization are executed whenever Apex code is deployed
 * to a production organization to confirm correctness, ensure code
 * coverage, and prevent regressions. All Apex classes are
 * required to have at least 75% code coverage in order to be deployed
 * to a production organization. In addition, all triggers must have some code coverage.
 * 
 * The @isTest class annotation indicates this class only contains test
 * methods. Classes defined with the @isTest annotation do not count against
 * the organization size limit for all Apex scripts.
 *
 * See the Apex Language Reference for more information about Testing and Code Coverage.
 */
@isTest
private class TestProdCase {

    static testMethod void myUnitTest() {
  	test.startTest();
	
	/**
	creating a list to iterate through both states of an Opportunity Case (Submitter, Vendor)
	**/
	List<Integer> run = new List<Integer>();
	run.add(1);
	run.add(2);
	run.add(3);
//	for(Integer it=0;it <run.size(); it++){
	
	System.debug('Alerting on ----> run List '+run);
// 	List<RecordType> rec = [Select id from RecordType where name in ('Implementation Vendor','Implementation Submitter')];
// 	for(Integer it = 0;it<rec.size();it++){

    	

    /**
    Create Account Record
    **/	
 
    	Account a = new Account(Name='TestAccount');
    	insert a;
   	
   	/**
    Create Contact Record
    **/		
	  String acId = null;
      List<Account> ac = [Select id from Account where name = 'TestAccount'];
	  Contact c = new Contact(FirstName='Johnny', LastName='Tester', AccountId=ac[0].Id);
	  acId = ac[0].id;
	  insert c;
	  System.debug('Alerting on ----> Contact List'+c);

	
    
    /**
    Create Opportunity Record
    **/	
    System.debug('Alerting on ----> '+'Going into the Opportuntiy creation');
    Opportunity o = new Opportunity();
//    for(Integer it=0;it <run.size(); it++){
    //Opportunity o = new Opportunity();
    list<Contact> co = [Select Id from Contact where firstName='Johnny' and lastName = 'Tester'];
   
   		//Integer ct = co.size();
   		//System.debug('Alerting on ----> '+ct);
		o.Name='TestOpportunity';
		o.CloseDate=Date.today();
		o.StageName='Prospecting';
		o.Opportunity_States__c='AL';
		o.Status__c='Business Development';
		o.AccountId=a.Id;
		o.Name='TestOpportunity';
		o.CloseDate=Date.today();
		system.debug('Alerting on ----> Contact List'+co);
		o.Implementation_Contac__c=co[0].Id;
		o.Type='Submitter';
		//Sets the Opportunity type to vendor or submitter
//		if(it == 1){
//			o.Type='Submitter';
//		}else if (it == 2){
//			o.Type='Vendor';
//		}else{
//		o.Type='Receiver';
//		}

		

//		insert o;	
//		System.debug('Alerting on ----> Opportuntiy List '+ o);	
//    }
    	insert o;	
		System.debug('Alerting on ----> Opportuntiy List '+ o);	
	/*
	Set the Product
	*/
	List<PricebookEntry> numb = [Select Id, Pricebook2Id from PricebookEntry where isActive = TRUE LIMIT 5];
	//OpportunityLineItem opl = new OpportunityLineItem(OpportunityId=o.Id);
	for(Integer i = 0;i<numb.size(); i++){
		OpportunityLineItem opl = new OpportunityLineItem(OpportunityId=o.Id);
//		opl.PricebookEntryId=numb[i].Id;
		opl.PricebookEntryId=numb[i].Id;
		opl.Quantity=25;
		opl.ServiceDate=Date.today();
		opl.UnitPrice=125.50;
		insert opl;
		System.debug('Alerting on ----> Opportunity Line Item '+ opl);
	}
	String opp = o.Id;
	
	/*
	Pass in the Opportunity Object
	*/
	ProdCase testing = new ProdCase(o);

	/*
	Pass  in the Opportunity ID
	*/
	testing.prodDetails(opp);
//	System.debug('Alerting on ----> Iteration '+it);
	test.stopTest();
		}
//		test.stopTest();
//    }
}