aces all of the test cases into one large group.
                For larger projects though this may not be flexible enough; you
                may want to group the tests in all sorts of ways.
            </p>
            <p>
                To get a more flexible group test we can subclass
                <span class="new_code">GroupTest</span> and then instantiate it as needed...
<pre>
&lt;?php
    require_once('simpletest/unit_tester.php');
    require_once('simpletest/reporter.php');
    <strong>
    