assertThat(graphAsMutableGraph.addNode(N1)).isTrue();
    assertThat(graph.nodes()).contains(N1);
  }

  @Test
  public void addNode_existingNode() {
    assume().that(graphIsMutable()).isTrue();

    addNode(N1);
    ImmutableSet<Integer> nodes = ImmutableSet.copyOf(graph.nodes());
    assertThat(graphAsMutableGraph.addNode(N1)).isFalse();

        def rule3 = rule(Integer, ModelNode.State.Mutated, ModelPath.path("a"))
        bindings.add(rule1)
        bindings.add(rule2)
        addNode(node1)
        addNode(node2)
        addNode(node3)
        addNode(node4)
        bindings.add(rule3)

        expect:
        bindings.getRulesWithSubject(nodeAtState("a", ModelNode.State.Mutated)) as List == [rule1]

	"k8s.io/kubernetes/pkg/volume/util/types"
)

// Calls AddNode() once.
// Verifies node exists, and zero volumes to attach.
func Test_AddNode_Positive_NewNode(t *testing.T) {
	// Arrange
	volumePluginMgr, _ := volumetesting.GetTestVolumePluginMgr(t)
	dsw := NewDesiredStateOfWorld(volumePluginMgr)
	nodeName := k8stypes.NodeName("node-name")

	// Act
	dsw.AddNode(nodeName)

	// Assert
	nodeExists := dsw.NodeExists(nodeName)

				addNode(t, 6)
				addNode(t, 0)
			},
			expected: []string{"node-2", "node-0", "node-3", "node-4", "node-5", "node-6"},
		},
		{
			name: "bug 91601, 7 nodes, two in a different zone",
			operations: func(t *testing.T) {
				addNode(t, 2)
				updateSnapshot(t)
				addNode(t, 3)
				addNode(t, 4)
				updateSnapshot(t)
				addNode(t, 5)
				addNode(t, 6)
				addNode(t, 0)
				addNode(t, 1)

        rulesByInput = new NodeAtStateIndex("rulesByInput");
    }

    public void nodeCreated(ModelNodeInternal node) {
        untypedPathReferences.addNode(node);
    }

    public void nodeDiscovered(ModelNodeInternal node) {
        typedPathReferences.addNode(node);
        scopeReferences.addNodeToScope(node.getPath(), node);
        scopeReferences.addNodeToScope(node.getPath().getParent(), node);
    }

      assertThat(network.adjacentEdges(E12)).containsExactlyElementsIn(adjacentEdges);
    }
  }

  @Override
  @Test
  public void edgesConnecting_checkReturnedSetMutability() {
    addNode(N1);
    addNode(N2);
    Set<String> edgesConnecting = network.edgesConnecting(N1, N2);
    UnsupportedOperationException e =
        assertThrows(UnsupportedOperationException.class, () -> edgesConnecting.add(E23));

        assertThrows(UnsupportedOperationException.class, () -> nodes.add(N2));
    addNode(N1);
    assertThat(graph.nodes()).containsExactlyElementsIn(nodes);
  }

  @Override
  @Test
  public void adjacentNodes_checkReturnedSetMutability() {
    assume().that(graphIsMutable()).isTrue();

    addNode(N1);
    Set<Integer> adjacentNodes = graph.adjacentNodes(N1);
    UnsupportedOperationException e =

}

func TestDesiredTTL(t *testing.T) {
	testCases := []struct {
		addNode      bool
		deleteNode   bool
		nodeCount    int
		desiredTTL   int
		boundaryStep int
		expectedTTL  int
	}{
		{
			addNode:      true,
			nodeCount:    0,
			desiredTTL:   0,
			boundaryStep: 0,
			expectedTTL:  0,
		},
		{
			addNode:      true,
			nodeCount:    99,
			desiredTTL:   0,
			boundaryStep: 0,

    abstract ImmutableActionSet<T> addAll(SetWithManyActions<T> source);

    abstract ImmutableActionSet<T> addOne(Action<? super T> action);

    private static class EmptySet<T> extends ImmutableActionSet<T> {
        @Override
        ImmutableActionSet<T> addOne(Action<? super T> action) {
            return new SingletonSet<T>(action);
        }

        @Override

        return this;
    }

    public PopularWordsRequestBuilder addTag(final String tag) {
        request.addTag(tag);
        return this;
    }

    public PopularWordsRequestBuilder addRole(final String role) {
        request.addRole(role);
        return this;
    }

    public PopularWordsRequestBuilder addField(final String field) {
        request.addField(field);
        return this;
    }