Updating AlterncTest class to return a compositedataset

phpunit/lib/AlterncTest.php

@@ -39,7 +39,7 @@ abstract class AlterncTest extends PHPUnit_Extensions_Database_TestCase
             $datasetList[]      = $dataSet;
         }
         $compositeDataSet            = new PHPUnit_Extensions_Database_DataSet_CompositeDataSet($datasetList);
-        return $dataSet;
+        return $compositeDataSet;
     }