Junit外部资源@Rule订单

Question

我想在我的测试类中使用多个外部资源,但是我对外部资源的排序有问题.

这是代码片段:

public class TestPigExternalResource {

     // hadoop external resource, this should start first
     @Rule
     public HadoopSingleNodeCluster cluster = new HadoopSingleNodeCluster();

     // pig external resourcem, this should wait until hadoop external resource starts
     @Rule
     public  PigExternalResource pigExternalResource = new PigExternalResource(); 

     ...  
}

问题是它尝试在hadoop启动之前启动猪,因此我无法连接本地hadoop单节点集群.

有没有办法订购junit规则？

谢谢

Answer 1

您可以使用RuleChain.

@Rule
public TestRule chain= RuleChain.outerRule(new HadoopSingleNodeCluster())
                           .around(new PigExternalResource());