Using more than one PHPUnit fixture in one test.

composite_dataset_phpunit.php

<?php

class DummyTest extends YourDatabaseTestClass
{
    protected function getDataSet()
    {
        $firstDataSet = $this->createXMLDataSet(__DIR__ . '/fixtures/first_fixture.xml');
        $secondDataSet = $this->createXMLDataSet(__DIR__ . '/fixtures/second_fixture.xml');
        
        $dataSets = array(
            $firstDataSet, $secondDataSet    
        );
        
        $compositeDataSet = new PHPUnit_Extensions_Database_DataSet_CompositeDataSet($dataSets);
        
        return $compositeDataSet;
    }
}