PHPUnit and DBUnit - getting started

Question

Does anyone have a link to a good, working tutorial or book on how to get started with adding the DBUnit layer to my PHPUNit tests?

I've tried following the code in

protected function getDatabaseTester()
{
    $pdo = new PDO('mysql:host=localhost;dbname=test', 'user', 'pass');
    $connection = new PHPUnit_Extensions_Database_DB_DefaultDatabaseConnection($pdo);
    $tester = new PHPUnit_Extensions_Database_DefaultTester($connection);
    $tester->setSetUpOperation(PHPUnit_Extensions_Database_Operation_Factory::CLEAN_INSERT());
    $tester->setTearDownOperation(PHPUnit_Extensions_Database_Operation_Factory::NONE());
    /*
    * the next line fails with the error

    PHP Fatal error:  __autoload(): Failed opening required 'PHPUnit_Extensions_Database_DataSet_FlatXMLDataSet.php' (include_path= *** 

    */
    $tester->setDataSet(new PHPUnit_Extensions_Database_DataSet_FlatXMLDataSet(dirname(__FILE__).'/../../../files/xml_database_export.xml'));
    return $tester;
}

The XML is created via mysqldump command. I'd happily use CSV, or even an array in memory (whatever works)

Unfortunately I just can't seem to get this system started.