public function testGetBrokerDetailWithEmptyResponse()
{
$zookeeperMock = $this->getMockBuilder('\\ZooKeeper')->disableOriginalConstructor()->getMock();
$zookeeperMock->expects($this->once())->method('exists')->with($this->equalTo(sprintf(Zookeeper::BROKER_DETAIL_PATH, 1)))->will($this->returnValue(true));
$zookeeperMock->expects($this->once())->method('get')->with($this->equalTo(sprintf(Zookeeper::BROKER_DETAIL_PATH, 1)))->will($this->returnValue(null));
$zookeeper = new Zookeeper();
$zookeeper->setZookeeper($zookeeperMock);
$this->assertEquals([], $zookeeper->getBrokerDetail(1));
}