/**
  * @return PDO
  */
 public function getMaster()
 {
     if (empty($this->_master)) {
         $this->_master = $this->_buildAdapter($this->_config->getMaster());
     }
     return $this->_master;
 }
 /**
  * @test
  */
 public function setMasterReplicaGetMasterReplica()
 {
     $config = new ConfigService();
     $config->addMaster($this->_correct1);
     $config->addReplica($this->_correct2);
     $this->assertSame($this->_correct1, $config->getMaster());
     $this->assertSame($this->_correct2, $config->getReplica());
 }