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            <p>
                The reason for this is to allow for more sophistcated
                GUI displays that allow the selection of individual test
                cases.
                In order to build a list of possible tests they need a
                report on the test structure for drawing, say a tree view
                of the test suite.
                With a reporter set to dry run that just sends drawing events
                this is easily accomplished.
            </p>
        
        <p><a class="target" name="other"><h2>Extending the reporter</h2></a></p>
            <p>
                Rather than simply modifying the existing display, you might want to
                produce a whole new HTML look, or even generate text or XML.
                Rather than override every method in
                <span class="new_code">HtmlReporter</span> we can take one
                step up the class hiearchy to <span class="new_code">SimpleReporter</span>
                in the <em>simple_test.php</em> source file.
            </p>
            <p>
                A do nothing display, a blank canvas for your own creation, would
                be...
<pre>
<strong>require_once('simpletest/simple_test.php');</strong>

class MyDisplay extends SimpleReporter {<strong>
    </strong>
    function paintHeader($test_name) {
    }
    
    function paintFooter($test_name) {
    }
    
    function paintStart($test_name, $size) {<strong>
        parent::paintStart($test_name, $size);</strong>
    }
    
    function paintEnd($test_name, $size) {<strong>
        parent::paintEnd($test_name, $size);</strong>
    }
    
    function paintPass($message) {<strong>
        parent::paintPass($message);</strong>
    }
    
    function paintFail($message) {<strong>
        parent::paintFail($message);</strong>
    }
}
</pre>
                No output would come from this class until you add it.
            </p>
        
        <p><a class="target" name="cli"><h2>The command line reporter</h2></a></p>
            <p>
                SimpleTest also ships with a minimal command line reporter.
                The interface mimics JUnit to some extent, but paints the
                failure messages as they arrive.
                To use the command line reporter simply substitute it
                for the HTML version...
<pre>
&lt;?php
require_once('simpletest/unit_tester.php');
require_once('simpletest/reporter.php');

$test = &amp;new TestSuite('File test');
$test-&gt;addTestFile('tests/file_test.php');
$test-&gt;run(<strong>new TextReporter()</strong>);
?&gt;
</pre>
                Then invoke the test suite from the command line...
<pre class="shell">
php file_test.php
</pre>
                You will need the command line version of PHP installed
                of course.
                A passing test suite looks like this...
<pre class="shell">
File test
OK
Test cases run: 1/1, Failures: 0, Exceptions: 0
</pre>
                A failure triggers a display like this...
<pre class="shell">
File test
1) True assertion failed.
    in createnewfile
FAILURES!!!
Test cases run: 1/1, Failures: 1, Exceptions: 0
</pre>
            </p>
            <p>
                One of the main reasons for using a command line driven
                test suite is of using the tester as part of some automated
                process.
                To function properly in shell scripts the test script should
                return a non-zero exit code on failure.
                If a test suite fails the value <span class="new_code">false</span>
                is returned from the <span class="new_code">SimpleTest::run()</span>
                method.
                We can use that result to exit the script with the desired return
                code...
<pre>
&lt;?php
require_once('simpletest/unit_tester.php');
require_once('simpletest/reporter.php');

$test = &amp;new TestSuite('File test');
$test-&gt;addTestFile('tests/file_test.php');
<strong>exit ($test-&gt;run(new TextReporter()) ? 0 : 1);</strong>
?&gt;
</pre>
                Of course we don't really want to create two test scripts,
                a command line one and a web browser one, for each test suite.
                The command line reporter includes a method to sniff out the
                run time environment...
<pre>
&lt;?php
require_once('simpletest/unit_tester.php');
require_once('simpletest/reporter.php');

$test = &amp;new TestSuite('File test');
$test-&gt;addTestFile('tests/file_test.php');
<strong>if (TextReporter::inCli()) {</strong>
    exit ($test-&gt;run(new TextReporter()) ? 0 : 1);
<strong>}</strong>
$test-&gt;run(new HtmlReporter());
?&gt;
</pre>
                This is the form used within SimpleTest itself.
            </p>
        
        <p><a class="target" name="xml"><h2>Remote testing</h2></a></p>
            <p>
                SimpleTest ships with an <span class="new_code">XmlReporter</span> class
                used for internal communication.
                When run the output looks like...
<pre class="shell">
&lt;?xml version="1.0"?&gt;
&lt;run&gt;
  &lt;group size="4"&gt;
    &lt;name&gt;Remote tests&lt;/name&gt;
    &lt;group size="4"&gt;
      &lt;name&gt;Visual test with 48 passes, 48 fails and 4 exceptions&lt;/name&gt;
      &lt;case&gt;
        &lt;name&gt;testofunittestcaseoutput&lt;/name&gt;
        &lt;test&gt;
          &lt;name&gt;testofresults&lt;/name&gt;
          &lt;pass&gt;This assertion passed&lt;/pass&gt;
          &lt;fail&gt;This assertion failed&lt;/fail&gt;
        &lt;/test&gt;
        &lt;test&gt;
          ...
        &lt;/test&gt;
      &lt;/case&gt;
    &lt;/group&gt;
  &lt;/group&gt;
&lt;/run&gt;
</pre>
                You can make use of this format with the parser
                supplied as part of SimpleTest itself.
                This is called <span class="new_code">SimpleTestXmlParser</span> and
                resides in <em>xml.php</em> within the SimpleTest package...
<pre>
&lt;?php
require_once('simpletest/xml.php');
    
...
$parser = &amp;new SimpleTestXmlParser(new HtmlReporter());
$parser-&gt;parse($test_output);
?&gt;
</pre>
                The <span class="new_code">$test_output</span> should be the XML format
                from the XML reporter, and could come from say a command
                line run of a test case.
                The parser sends events to the reporter just like any
                other test run.
                There are some odd occasions where this is actually useful.
            </p>
            <p>
                A problem with large test suites is thet they can exhaust
                the default 8Mb memory limit on a PHP process.
                By having the test groups output in XML and run in
                separate processes, the output can be reparsed to
                aggregate the results into a much smaller footprint top level
                test.
            </p>
            <p>
                Because the XML output can come from anywhere, this opens
                up the possibility of aggregating test runs from remote
                servers.
                A test case already exists to do this within the SimpleTest
                framework, but it is currently experimental...
<pre>
&lt;?php
<strong>require_once('../remote.php');</strong>
require_once('../reporter.php');
    
$test_url = ...;
$dry_url = ...;
    
$test = &amp;new TestSuite('Remote tests');
$test-&gt;addTestCase(<strong>new RemoteTestCase($test_url, $dry_url)</strong>);
$test-&gt;run(new HtmlReporter());
?&gt;
</pre>
                The <span class="new_code">RemoteTestCase</span> takes the actual location
                of the test runner, basically a web page in XML format.
                It also takes the URL of a reporter set to do a dry run.
                This is so that progress can be reported upward correctly.
                The <span class="new_code">RemoteTestCase</span> can be added to test suites
                just like any other group test.
            </p>
        
    </div>
        References and related information...
        <ul>
<li>
            SimpleTest project page on <a href="http://sourceforge.net/projects/simpletest/">SourceForge</a>.
        </li>
<li>
            SimpleTest download page on <a href="http://www.lastcraft.com/simple_test.php">LastCraft</a>.
        </li>
<li>
            The <a href="http://simpletest.org/api/">developer's API for SimpleTest</a>
            gives full detail on the classes and assertions available.
        </li>
</ul>
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