 <span class="new_code">GroupTest</span>
                class has done the <span class="new_code">require_once()</span>
                for us.
                It then checks to see if any new test case classes
                have been created by the new file and automatically adds
                them to the group test.
                Now all we have to do is add each new file.
            </p>
            <p>
                There are two things that could go wrong and which require care...
           