Hi all,

With the help of my mentor/boss we...mostly he...created the following Apex Class to return the most recent related list record for a Contact:

//========================================================
// Name: GenerateTopListResults
// Type: Class
// Purpose:  This class is used as an Visualforce page extension to retrieve Contact related list items
// Created by: Garrett Farwell and Don Robins
// Created on: Aug 9, 2013
//
// Rev #  Revised on  Revised by        Revision Description
// -----  ----------  -------------------------------------
//  1.0   8/9/2013  Garrett and Don        Initial Release
//=========================================================

public class GenerateTopListResults
{   
       //attribute of the class
       //needs to be private since we are only using it in this class       
       private ID currentContactId;

       //Constructor to get the Contact Id from the Controller Extension
       public GenerateTopListResults(ApexPages.StandardController stdController) {
                 
                 currentContactId = stdController.getId();
        }   

       //A getter method for each list is utilized
       
       //Campaign Members Volunteer List       
       public List<CampaignMember> getCampaignMemberVolunteerList()  {
       
            Return [SELECT Id, Campaign.Name, Campaign.StartDate, Campaign.RecordTypeId FROM CampaignMember WHERE Campaign.RecordTypeID = '012U00000001486' AND ContactId = : currentContactId ORDER BY Campaign.StartDate DESC Limit 1];
        }   
        
        //Campaign Members Communication List 
        public List<CampaignMember> getCampaignMemberCommunicationList()  {
       
            Return [SELECT Id, Campaign.Name, Campaign.StartDate, Campaign.RecordTypeId FROM CampaignMember WHERE Campaign.RecordTypeID = '012U000000014Bo' AND ContactId = : currentContactId ORDER BY Campaign.StartDate DESC Limit 1];
        }           
       
       //RTP Relationship List
       public List<Relationship__c> getRelationshipList()  {
       
            Return [SELECT Start_Date__c, Interest__c,Program_Interest__c,Role__c FROM Relationship__c WHERE Contact__c = : currentContactId ORDER BY Start_Date__c DESC Limit 1];
       }   
       
       //Documentation List
       public List<Documentation__c> getDocumentationList()  {
       
            Return [SELECT Contacts_Documentation__c, Number_of_Applications__c FROM Documentation__c WHERE Contacts_Documentation__c = : currentContactId];
       }       

       //Donation List
       public List<OpportunityContactRole> getDonationList()  {
       
            Return [SELECT ContactId, Role, Opportunity.Name, Opportunity.CloseDate FROM OpportunityContactRole WHERE Role = 'Donor' AND ContactId = : currentContactId AND Opportunity.RecordTypeID <> '012U000000014Wp' AND Opportunity.IsWon = true ORDER BY Opportunity.CloseDate DESC Limit 1];
       }    
 }

 I am using this class as an extension on a visualforce page.  It is just to display the results of the quieries on a Contact record.  I am new to this stuff...how would I write a Test Class to cover the above code?

I started to set up the test data but I am not sure if I am doing this correctly.  Even once I have the test data how do I test it properly?  I really appreciate anyone's help!

//========================================================
// Name: GenerateTopListResultsTest
// Type: Test Class
// Purpose: Tests for the GetTopListResultsClass
// Created by: Garrett Farwell
// Created on: August 9th, 2013
//
// Rev #  Revised on  Revised by        Revision Description
// -----  ----------  -------------------------------------
//  1.0   05/10/2013  Garrett Farwell       Initial Release
//=========================================================
@isTest
private class GenerateTopListResultsTest {

    static testMethod void canInsertTestRecords() {
        //=============================================================
        //SETUP
        //=============================================================

        //Create a mock Contact record
        Contact a = new Contact(LastName='Test Contact');
        INSERT a;

        //Create mock Campaign records
        Campaign c1 = new Campaign(Name='TestCommunicationCampaign1', StateDate = '2013-08-09', IsActive = 'true', RecordTypeId = '012U000000014Bo'); 
        Campaign c2 = new Campaign(Name='TestVolunteerCampaign2', StateDate = '2013-02-09', IsActive = 'true', RecordTypeId = '012U00000001486');
        Campaign c3 = new Campaign(Name='TestCommunicationCampaign3', StateDate = '2013-04-09', IsActive = 'true', RecordTypeId = '012U000000014Bo');
        Campaign c4 = new Campaign(Name='TestVolunteerCampaign4', StateDate = '2013-05-09', IsActive = 'true', RecordTypeId = '012U00000001486');
        List<Campaign> campaignList = new List<Campaign> { c1, c2, c3, c4 };
        INSERT campaignList;

		//Create mock CampaignMember records
		CampaignMember cm1 = new CampaignMember(CampaignId=c1.Id, ContactId=a.Id);
		CampaignMember cm2 = new CampaignMember(CampaignId=c2.Id, ContactId=a.Id);
		CampaignMember cm3 = new CampaignMember(CampaignId=c3.Id, ContactId=a.Id);
		CampaignMember cm4 = new CampaignMember(CampaignId=c4.Id, ContactId=a.Id);
		List<CampaignMember> campaignMemberList = new List<CampaignMember> { cm1, cm2, cm3, cm4 };
        INSERT campaignMemberList;

		//Create mock RTP Relationship records
		Relationship__c r1 = new Relationship__c(Contact__c=a.Id, State_Date__c = '2013-06-18');
		Relationship__c r2 = new Relationship__c(Contact__c=a.Id, State_Date__c = '2013-07-15');
		Relationship__c r3 = new Relationship__c(Contact__c=a.Id, State_Date__c = '2013-08-21');
		Relationship__c r4 = new Relationship__c(Contact__c=a.Id, State_Date__c = '2013-02-10');
		List<Relationship__c> rtpRelationshipList = new List<Relationship__c> { r1, r2, r3, r4 };
        INSERT rtpRelationshipList;

		//Create a mock Documentation record
		Documentation__c d1 = new Documentation__c(Contact__c=a.Id)
		INSERT d1;
		
		//Create Repair Application records
		Repair_Application__c ra1 = new Repair_Application__c(Documentation_Reference__c = d1.Id);
		Repair_Application__c ra2 = new Repair_Application__c(Documentation_Reference__c = d1.Id);
		List<Repair_Application__c> repairApplicationList = new List<Repair_Application__c> { ra1, ra2 };
        INSERT repairApplicationList;
        
        //Create Donation/Opportunity records
		Opportunity o1 = new Opportunity(Name= 'TestOpp1', CloseDate = '2013-06-07');
		Opportunity o2 = new Opportunity(Name= 'TestOpp2', CloseDate = '2013-07-15');
		Opportunity o3 = new Opportunity(Name= 'TestOpp3', CloseDate = '2013-08-07');
		List<Opportunity> opportunityList = new List<Opportunity> { o1, o2, o3 };
        INSERT opportunityList;
        
        //Create ContactRole entries
        OpportunityContactRole ocr1 = new OpportunityContactRole(ContactId = a.Id, OpportunityId = o1.Id, Role = 'Donor');
		OpportunityContactRole ocr2 = new OpportunityContactRole(ContactId = a.Id, OpportunityId = o2.Id, Role = 'Donor');
		OpportunityContactRole ocr3 = new OpportunityContactRole(ContactId = a.Id, OpportunityId = o3.Id, Role = 'Donor');
		List<OpportunityContactRole> opportunityContactRoleList = new List<OpportunityContactRole> { ocr1, ocr2, ocr3 };
        INSERT opportunityContactRoleList;
		

        householdIds.add(h.id);

        //Create some mock Opportunities for the household.
        Opportunity o1 = new Opportunity(name='Donation1', StageName = 'Posted', Amount = 500, Household__c = h.id, CloseDate = date.today(), AccountId = a.Id );
        Opportunity o2 = new Opportunity(name='Donation2', StageName = 'Posted', Amount = 750, Household__c = h.id, CloseDate = date.today(), AccountId = a.Id );       
        Opportunity o3 = new Opportunity(name='Donation3', StageName = 'Posted', Amount = 250, Household__c = h.id, CloseDate = date.today(), AccountId = a.Id );