code: @Test public void testCreateClusterWithInvalidRequest(){
    ClusterRequest r=new ClusterRequest(null,null,null,null);
    r.toString();
    try {
      controller.createCluster(r);
      fail("Expected create cluster for invalid request");
    }
   catch (  Exception e) {
    }
    r.setClusterId(new Long(1));
    try {
      controller.createCluster(r);
      fail("Expected create cluster for invalid request");
    }
   catch (  Exception e) {
    }
    r.setClusterId(null);
    r.setClusterName("foo");
    try {
      controller.createCluster(r);
      fail("Expected create cluster for invalid request - no stack version");
    }
   catch (  Exception e) {
    }
  }
  