title: Do i need to write testcase for util classes used by testcase
body: <p>I have situation where there are multiple test cases which uses a common method. So in order to avoid DRY(Don't repeat yourself) i put them into a util class. So now do i need to write a test case for the the util class. All the util class contains is reading a particular file and returning its contents.</p>
  
  <p>Thanks,
  Sriram </p>