How to test inner functon in qunit

How to test inner functon in qunit

I just started with Qunit, and don't know much about it.

The problem I'm having is that I have written this function in my code and want to test this using Qunit.

     
     
    
      
  1. <script>
    2. 
      
  2. function calc(firstno, secnum) {
    3. 
      
  3.  return firstno + secnum;
    4. 
      
  4. }
    5. 
      
  5. function main(firstno, secnum) {
    6. 
      
  6.  return calc(firstno, secnum);
    7. 
      
  7. }
    8. 
      
  8. </script>
    9. 
     

So, how should I test the calc function when I write a test case for 
the main function.