@Test
public void testDirStructure() throws Exception {

  Configuration conf = new YarnConfiguration();
  String localDir1 = new File("file:///" + testDir, "localDir1").getPath();
  conf.set(YarnConfiguration.NM_LOCAL_DIRS, localDir1);
  String logDir1 = new File("file:///" + testDir, "logDir1").getPath();
  conf.set(YarnConfiguration.NM_LOG_DIRS, logDir1);
  LocalDirsHandlerService dirSvc = new LocalDirsHandlerService();
  dirSvc.init(conf);
  Assert.assertEquals(1, dirSvc.getLocalDirs().size());
}