@Test
public void testNodeHealthReportIsNotNull() throws Exception{

  String host1 = "host1";
  final int memory = 4 * 1024;
  NodeStatus mockNodeStatus = createMockNodeStatus();
  org.apache.hadoop.yarn.server.resourcemanager.NodeManager nm1 = 
      registerNode(host1, 1234, 2345, NetworkTopology.DEFAULT_RACK,
      Resources.createResource(memory, 1), mockNodeStatus);
  nm1.heartbeat();
  nm1.heartbeat();
  Collection<RMNode> values = resourceManager.getRMContext().getRMNodes().values();
  for (RMNode ni : values) {
    assertNotNull(ni.getHealthReport());
  }
}