st.MakePod().Name("p2").UID("p2").Namespace(v1.NamespaceDefault).Node("node2").Req(mediumRes).Obj(),
			},
			// even though node1 will fail with error but node2 will still be returned as a valid nominated node.
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(largeRes).Label("error", "true").Obj(),
				st.MakeNode().Name("node2").Capacity(largeRes).Obj(),
			},

            [
                taskMatcher("node1", ":producer:producer", []),
                transformStepMatcher("node2", expectedTransformId1, ["node1"]),
                transformStepMatcher("node3", expectedTransformId2, ["node1"]),
                taskMatcher("node4", ":consumer1:resolve", ["node2"]),
                taskMatcher("node5", ":consumer2:resolve", ["node3"]),
            ]
        )

				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods: []*v1.Pod{
				st.MakePod().Node("node1").Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "4000"}).Obj(),

        def node2 = selectNextTaskNode()
        assert node2.task == task2
        def node3 = selectNextTaskNode()
        assert node3.task == task3
        assertNoWorkReadyToStart()
        finishedExecuting(node3)
        finishedExecuting(node2)
        finishedExecuting(node1)
    }

    private void finishedExecuting(Node node) {
        coordinator.withStateLock {

	// nodes objects
	node1         = makeNode("node1").withLabel(nodeLabelKey, "node1").Node
	node2         = makeNode("node2").withLabel(nodeLabelKey, "node2").Node
	node1NoLabels = makeNode("node1").Node
	node1Zone1    = makeNode("node1").withLabel("topology.gke.io/zone", "us-east-1").Node
	node1Zone2    = makeNode("node1").withLabel("topology.gke.io/zone", "us-east-2").Node

	// csiNode objects

	nodes = asw.GetNodesForAttachedVolume(volumeName)
	if len(nodes) != 1 {
		t.Fatalf("AddVolumeNode_Positive_NewVolumeNewNodeWithFalseAttached failed. Expect one node returned.")
	}
	if nodes[0] != nodeName {
		t.Fatalf("AddVolumeNode_Positive_NewVolumeNewNodeWithFalseAttached failed. Expect node %v, Actual node %v", nodeName, nodes[0])
	}

	// Act
	// Taint the node
	node3 := node2.DeepCopy()
	node3.Spec.Taints = append(node3.Spec.Taints, v1.Taint{Key: v1.TaintNodeOutOfService, Effect: v1.TaintEffectNoExecute})
	updateErr = informerFactory.Core().V1().Nodes().Informer().GetStore().Update(node3)
	if updateErr != nil {
		t.Fatalf("Update node failed. Expected: <no error> Actual: <%v>", updateErr)
	}

			Key:    "kubernetes.io/hostname",
			Values: []string{"node1", "node1"},
		}},
	}}

	topologyMultiValues := []api.TopologySelectorTerm{{
		MatchLabelExpressions: []api.TopologySelectorLabelRequirement{{
			Key:    "kubernetes.io/hostname",
			Values: []string{"node1", "node2"},
		}},
	}}

	topologyEmptyMatchLabelExpressions := []api.TopologySelectorTerm{{

		},
		{
			pod: st.MakePod().Label("foo", "").Obj(),
			pods: []*v1.Pod{
				st.MakePod().Node("nodeA").Namespace(defaultNamespace).PodAntiAffinityExists("foo", "invalid-node-label", st.PodAntiAffinityWithRequiredReq).Obj(),
			},
			nodes: []*v1.Node{

  TF_Operation *node1, *node2, *node3;
  NodeWithPlaceholderAttrHelper(func_graph.get(), s.get(), "node1", "v1",
                                &node1);
  NodeWithPlaceholderAttrHelper(func_graph.get(), s.get(), "node2", "v1",
                                &node2);
  NodeWithPlaceholderAttrHelper(func_graph.get(), s.get(), "node3", "v2",
                                &node3);