I am building a custom controller.  My end goal is to have a method that reacts to data from the user pressing a button on a VF page to determine if they can get Leads and react accordingly.

The controller functions properly in my dev environment.  However, my testing methodology is not hitting every branch of the method and I'm a bit confused as to the reason.

Controller:

global without sharing class TomController{

public String getResult(){
return res;
}
private String res=null;

//Here we set variables utilized later to define user-specific search parameters
public Double MAX= [select TruePerDiem__c from User where ID = :userinfo.getuserid()][0].TruePerDiem__c;
public Integer Diem = Max.intvalue();
public String Queue = [select LeadPullQueues__c from User where ID = :userinfo.getuserid()][0].LeadPullQueues__c;
public Double NewMAX= [select PerDiem__c from User where ID = :userinfo.getuserid()][0].PerDiem__c;
public Integer NewDiem = newMax.intvalue();
Public Date LastPulled = [select Last_Pulled__c from User where ID = :userinfo.getuserid()][0].Last_Pulled__c;
public Double DaysSince= [select PulledXDaysAgo__c from User where ID = :userinfo.getuserid()][0].PulledXDaysAgo__c;
public Integer LastPull = DaysSince.intvalue();


//Everything below is the method that reacts to a button being pushed on the VF Page

public PageReference doSearch() {

// Once the button is pushed, This method dictates a path of action to take based on data of the user pressing the button
// In the first branch, A user has not pulled Leads today, so we use their Regular Per Diem since they are free to pull their full allotment of Leads
// The trigger updating the user record will also follow this logic to reset the number of Leads a User has pulled on THIS day
// The trigger will ALWAYS update a User's Last Pulled Date
if(LastPull > 0){
// We update the Lead records only when the owner id = User's Lead Pull Queue Value
List<Lead> leads = [select Id,ownerid,PulledYes__c from lead where ownerid = :Queue limit :NewDiem];
List<User> Users = [select ID, PulledToday__c from User where ID = :userinfo.getuserid() Limit 1];
ID u = [select ID from User where ID = :userinfo.getuserid()][0].Id;

for(Lead l:leads){
l.ownerid=u;
l.PulledYes__c='yes';
l.this_was_pulled__c=Date.Today();
}

update leads;

res = 'success';
return new PageReference('/00Q/o');
}

// In this second branch, A user has pulled Leads today, so we use their True Per Diem to make ensure they only get the Leads they should
// The trigger updating the user record will also follow this logic to add to the number of Leads a User has pulled on THIS day

else if(MAX > 0 && LastPull <= 0){
// We update the Lead records only when the owner id = User's Lead Pull Queue Value
List<Lead> leads = [select Id,ownerid,PulledYes__c from lead where ownerid = :Queue limit :Diem];
List<User> Users = [select ID, PulledToday__c from User where ID = :userinfo.getuserid() Limit 1];
ID u = [select ID from User where ID = :userinfo.getuserid()][0].Id;

for(Lead l:leads){
l.ownerid=u;
l.this_was_pulled__c=Date.Today();

}

update leads;

res = 'success';
return new PageReference('/00Q/o');
}

// In this third branch, A user has pulled Leads today and has none left to pull, so we inform them with a simple message
// The trigger updating the user record will do nothing since no Leads will be pulled

else if(MAX <= 0 && LastPull < 1){
system.debug('User reached Daily Lead Limit, must generate an error message...');
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.severity.INFO, 'You have reached your Daily Lead Limit');
ApexPages.addMessage(myMsg);
return null;
}

// In this final branch, none of the criteria has been met and the user will be notified to contact the System Administrator
// The trigger updating the user record will do nothing since no Leads will be pulled

Else {
system.debug('General Error on Lead Puller Controller, must generate an error message...');
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.severity.ERROR, 'The Get Leads function did not assign you Leads, Please contact your System Administrator');
ApexPages.addMessage(myMsg);
return null;

}

}

}

 Testing Method:

@isTest
private class TestTomCtrlr3{

static testmethod void TestTomCtrlr2a(){

//Prepare user for the test data
date dueDate = date.newInstance(2008, 1, 30);

String Quv = [select Queue.id from QueueSobject where Queue.name='A Test US Leads'][0].Queue.id;

Profile p = [select id from profile where name='Standard User'];
User Luse1 = new User(username='testa1@test.com', lastname='test', PerDiem__c = 4, PulledToday__c = 5,
DailyQuota__c = 5, email='testa1@test.com', alias='test', communitynickname='test',
LanguageLocaleKey = 'en_US', Localesidkey = 'en_US', TimeZoneSidKey = 'America/Los_Angeles',
emailencodingkey = 'ISO-8859-1', profileid = p.id, Last_Pulled__c = DueDate, LeadPullQueues__c = Quv);
insert Luse1;

QueueSobject Qu = [select Queue.id from QueueSobject where Queue.name='A Test US Leads'];


// Seed the database with some leads, and make sure they can
// be bulk inserted successfully.

Lead lead1 = new Lead(LastName='Test1', Company='Test1 Inc.', Email='test1@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead lead2 = new Lead(LastName='Test2', Company='Test2 Inc.', Email='test4@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead lead3 = new Lead(LastName='Test3', Company='Test3 Inc.', Email='test5@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead[] leads = new Lead[] {lead1, lead2, lead3};
insert leads;

PageReference pageRef = Page.leadgetter;
Test.setCurrentPageReference(pageRef);
ApexPages.currentPage().getParameters().put('id',Luse1.id);


TomController controller = new TomController();

controller.doSearch();
Integer t = [Select count() from Lead where ownerid = :Luse1.id];

system.AssertEquals(3, t);

}

static testmethod void TestTomCtrlr2b(){

//Prepare Queue for User
// tried this but did not work Queue Qd = New Queue(Name='TmpQueue', Type='Queue');

String Quv = [select Queue.id from QueueSobject where Queue.name='A Test US Leads'][0].Queue.id;

//Prepare user for the test data

Profile p = [select id from profile where name='Standard User'];
User Luse2 = new User(username='test2a@test.com', lastname='test', PerDiem__c = 4, PulledToday__c = 0,
DailyQuota__c = 5, email='tes2t@test.com', alias='test', communitynickname='test',
LanguageLocaleKey = 'en_US', Localesidkey = 'en_US', TimeZoneSidKey = 'America/Los_Angeles',
emailencodingkey = 'ISO-8859-1', profileid = p.id, Last_Pulled__c = Date.Today(), LeadPullQueues__c = Quv);
insert Luse2;
QueueSobject Qu = [select Queue.id from QueueSobject where Queue.name='A Test US Leads'];


// Seed the database with some leads, and make sure they can
// be bulk inserted successfully.

Lead lead1 = new Lead(LastName='Test1', Company='Test1 Inc.', Email='test1@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead lead2 = new Lead(LastName='Test2', Company='Test2 Inc.', Email='test4@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead lead3 = new Lead(LastName='Test3', Company='Test3 Inc.', Email='test5@duptest.com', PulledYes__c = '', OwnerId=Qu.Queue.ID);
Lead[] leads = new Lead[] {lead1, lead2, lead3};
insert leads;

PageReference pageRef = Page.leadgetter;
Test.setCurrentPageReference(pageRef);
ApexPages.currentPage().getParameters().put('id',Luse2.id);


TomController controller = new TomController();

controller.doSearch();
Integer t = [Select count() from Lead where id in :ownerid = :Luse2.id];


system.AssertEquals(3, t);

}

static testmethod void TestTomCtrlr2ErrorA(){

//Create Flag for Message Check

Boolean errorFound = false;

String Quv = [select Queue.id from QueueSobject where Queue.name='A Test US Leads'][0].Queue.id;

//Prepare user for the test data
//This user will trigger the third branch by having met the daily pull quota and having a "pull date" of today

Profile p = [select id from profile where name='Standard User'];
User Muse = new User(username='testamsg@test.com', lastname='test', PerDiem__c = 0, PulledToday__c = -1,
DailyQuota__c = 0, email='testamsg@test.com', alias='test', communitynickname='test',
LanguageLocaleKey = 'en_US', Localesidkey = 'en_US', TimeZoneSidKey = 'America/Los_Angeles',
emailencodingkey = 'ISO-8859-1', profileid = p.id, Last_Pulled__c = (Date.Today()-1), LeadPullQueues__c = Quv);
insert Muse;

//Trigger Controller by calling VF page, Button Method both in context of above user

PageReference pageRef = Page.leadgetter;
Test.setCurrentPageReference(pageRef);

ApexPages.currentPage().getParameters().put('id',Muse.id);

TomController controller = new TomController();

controller.doSearch();

//Controller's been instantiated, now check to make sure the message from third branch displays

/*
String error = controller.getError();
System.AssertEquals(error,'Link or ID must be at least 15 characters long.');
*/

//This is an approach that seems not to be working

ApexPages.Message[] mssgs = ApexPages.getMessages();
for(ApexPages.Message m : mssgs){
if(m.getDetail()=='You have reached your Daily Lead Limit')
errorFound=true;
}
System.assert(errorFound==false);

}

}

 I'm still playing with ideas here but it would be a big help if anybody with more experience could point out any glaring issues/ommissions.  

Basically, I'm able to cover the first DML transaction and the  setting the variables.  For some reason, calling the second and third branches is not running the "Do Search" method and moving the Leads or generating the message.