title: Query on unit testing of sockets in c language using RTRT testing tool
body: <p>Software is developed on VXworks operating system using C programming language.</p>
  
  <p>Application establishes socket connection with other application and during the process it calls many inbuilt VXworks system calls like <code>send()</code>,<code>recv()</code>,<code>bzero()</code> and <code>bcopy()</code>.</p>
  
  <p>The question is i'm trying to carry out the unit testing(statement coverage) of my software using RTRT testing tool.</p>
  
  <p>As <code>send()</code>,<code>recv()</code> are inbuilt system calls,the values passed to and return by these system calls are out of my control.How to carry out unit testing of sockets using RTRT tool ?</p>