title: Writing test cases using CodeIgniter
body: <p>How can I write a test case for Controller/Model using CodeIgniter? Can anyone please provide a reference link if possible. I am new to test cases using CodeIgniter.</p>
  
  <p>I have checked on CI site but didn't find how we implement test cases in CI. Also i have search on Google for it but didn't get any appropriate guide for same.</p>