/**
* This is run after each unit test. It empties the database.
*/
protected function tearDown()
{
// Only commit if the transaction hasn't failed.
// This is because tearDown() is also executed on a failed tests,
// and we don't want to call ConnectionInterface::commit() in that case
// since it will trigger an exception on its own
// ('Cannot commit because a nested transaction was rolled back')
if ($this->con->isCommitable()) {
$this->con->commit();
}
$this->con = null;
}
