test class coverage for return statement

Question

How do i cover code coverage for a return statement.I am not using pagereference.

if(atleastoneselected==false){
            errMsg='No contacts Selected';//not covered
            return page.importfile;//not covered
        }
        if(smstoggle==false && Emailtoggle==false){
            errMsg='Select the required toggle'; //not covered
            return page.importfile;//not covered
        }
        if(smstoggle|| Emailtoggle){//covered
            sucmsg=null;        //covered      
        }
        if( smstoggle && Emailtoggle){       
              sucmsg=null;//not covered
        }  

Answer 1

Basically you need to call your function multiple times, each time with slightly different parameters or data so that the code enters each if statement.
As you can see, your code ran once with smstoggle = true, and so covered that code.
You need to run it again with all possible permutations of your code:

• atleastoneselected == false
• smstoggle==false && Emailtoggle==false
• smstoggle && Emailtoggle