/**
  * Rollback changes.
  */
 public function tearDown()
 {
     $this->_em->rollback();
     @exec('php app/console syw:user:delete ' . $this->test1_username . ' >/dev/null 2>&1');
     @exec('php app/console syw:user:delete ' . $this->test2_username . ' >/dev/null 2>&1');
     parent::tearDown();
     $this->_em->close();
 }
 /**
  * Rollback changes.
  */
 public function tearDown()
 {
     $this->_em->rollback();
     parent::tearDown();
     $this->_em->close();
 }