[solved]How to display results for unit testing?

[eluser]Unknown[/eluser]
Hi, I am really interested about how unit test works in codeigniter. I have created a very basic controller with the following example. I just point to the function where I am about to do the testing. How should i display the result? I tried pointing to another function to show result but it doesn't seem to give any respond.

Can anyone briefly explained to me how it works?

Code:

<?php
class User extends Controller{
function User(){
  parent::Controller();
  
  $this->view_data['base_url'] = base_url();
}

function index(){
  $this->addition();
}


function addition()
{
  $this->load->library('unit_test');
  $test = 1 + 1;
  $expected_result = 2;
  $test_name = 'Adds one plus one';
  $this->unit->run($test, $expected_result, $test_name);
  $this->showresult();
  
}

function showresult()
{
  $this->load->library('unit_test');

   $str = '
  <table border="0" cellpadding="4" cellspacing="1">
   {rows}
    <tr>
    <td>{item}</td>
    <td>{result}</td>
    </tr>
   {/rows}
  </table>';
  

  echo $this->unit->set_template($str);

}
}