protected function tearDown()
{
$this->getDatabaseTester()->setTearDownOperation($this->getTearDownOperation());
$this->getDatabaseTester()->setDataSet($this->getDataSet());
$this->getDatabaseTester()->onTearDown();
/**
* Destroy the tester after the test is run to keep DB connections
* from piling up.
*/
$this->databaseTester = NULL;
}