public function tearDown()
 {
     parent::tearDown();
     unset($this->_instance);
     // We have to wait after a memcache flush
     sleep(1);
 }
 public function tearDown()
 {
     parent::tearDown();
     unset($this->_instance);
 }
 public function tearDown()
 {
     $this->_instance->___dropDatabaseFile();
     parent::tearDown();
     unset($this->_instance);
 }