Good day esteemed experts,

I am unable to increase the test coverage of my email-recieving class above ~50%.

Email Class:

global class DailyRecieve implements Messaging.InboundEmailHandler
{
global Messaging.InboundEmailResult handleInboundEmail(Messaging.inboundEmail email,Messaging.InboundEnvelope envelope){
Messaging.InboundEmailResult result = new Messaging.InboundEmailResult();

source=email.plaintextbody;

//prepare dummy list for use if data source does not contain certain fields
string[] dummy=new List<String> ();
dummy.add('');
dummy.add('');

//Retrieve Truck name from License number
string[] Licenseno = source.split('<License>',3);
string License= Licenseno[1].trim().substring(0);
Truck__c[] Truck = [select Name from Truck__c where License_no__c = :License Limit 1];


//Retrieve data
string[] OBJECT_ID=((source.contains('<OBJECT_ID>') == false)? dummy :source.split('<OBJECT_ID>',3));
string[] OPERATION_CODE=((source.contains('<OPERATION_CODE>') == false)? dummy :source.split('<OPERATION_CODE>',3));
string[] REPORT_VERSION=((source.contains('<REPORT_VERSION>') == false)? dummy :source.split('<REPORT_VERSION>',3));
string[] REPORT_NOON=((source.contains('<REPORT_NOON>') == false)? dummy :source.split('<REPORT_NOON>',3));
string[] REPORT_OFFHIRE=((source.contains('<REPORT_OFFHIRE>') == false)? dummy :source.split('<REPORT_OFFHIRE>',3));
string[] REPORT_DATE=((source.contains('<REPORT_DATE>') == false)? dummy :source.split('<REPORT_DATE>',3));

String RptName = (Truck[0].Name+' '+REPORT_DATE[1].substring(0,16));

//Input db

Daily__c r = new Daily__c(Name = RptName, Truck_Name__c = Truck[0].ID, Email_from__c = email.fromAddress,
Object_ID__c=(integer.valueof(OBJECT_ID[1].trim().length()) == 0)? null :decimal.valueof(OBJECT_ID[1].trim()),
Operation_code__c=(integer.valueof(OPERATION_CODE[1].trim().length()) == 0)? null :decimal.valueof(OPERATION_CODE[1].trim()),
Report_Version__c=(integer.valueof(REPORT_VERSION[1].trim().length()) == 0)? Null :REPORT_VERSION[1],
Report_Noon__c=(integer.valueof(REPORT_NOON[1].trim().length()) == 0)? null :decimal.valueof(REPORT_NOON[1].trim()),
Report_Offhire__c=(integer.valueof(REPORT_OFFHIRE[1].trim().length()) == 0)? null :decimal.valueof(REPORT_OFFHIRE[1].trim()),
Report_Date__c=(REPORT_DATE[1] == '0' || integer.valueof(REPORT_DATE[1].trim().length()) == 0)? Null : datetime.valueof(REPORT_DATE[1])

);

upsert r Name; 
return result;
}
}

Test method:

@isTest
private class DailyRecieve_Test 
{
static testMethod void test234567() {

  // create a new email and envelope object
  Messaging.InboundEmail email = new Messaging.InboundEmail() ;
  Messaging.InboundEnvelope env = new Messaging.InboundEnvelope();
 
  // setup the data for the email
  email.subject = 'dailyreptest';
  email.fromname = 'FirstName LastName';
  env.fromAddress = 'someaddress123@someverifieddomain.com';
  email.plainTextBody= '<OBJECT_ID>334<OBJECT_ID>'
+'<License>123456<License>'
+'<OPERATION_CODE>4<OPERATION_CODE>'
+'<REPORT_VERSION>v.2.9<REPORT_VERSION>'
+'<REPORT_NOON>1<REPORT_NOON>'
+'<REPORT_OFFHIRE>0<REPORT_OFFHIRE>'
+'<REPORT_DATE>2012-01-04 18:00:00<REPORT_DATE>';
  
  // call the email service class and test it with the data in the testMethod
  DailyRecieve dailytest = new DailyRecieve();
  dailytest.handleInboundEmail(email, env);
  
  // query for the daily_report the email service created
  Daily__c daily = [select id, OBJECT_ID__c,  REPORT_NOON__c, REPORT_OFFHIRE__c, from Daily__c where OBJECT_ID__c = 334];
 
  System.assertEquals(daily.REPORT_NOON ,1);
  System.assertEquals(daily.REPORT_OFFHIRE,0);
  System.assertEquals(daily.OBJECT_ID__c,334);
 }
}

The thing is gives me 50% coverage. When looking at test coverage "line-for-line", all lines related to allocation of data to custom fields are colored red, meaning they are not properly tested. 

Any ideas?