assertThat(graph.successors(node)).isEqualTo(graph.adjacentNodes(node));
        assertThat(graph.inDegree(node)).isEqualTo(graph.degree(node));
        assertThat(graph.outDegree(node)).isEqualTo(graph.degree(node));
      }

      for (N adjacentNode : sanityCheckSet(graph.adjacentNodes(node))) {
        if (!graph.allowsSelfLoops()) {

    assertThat(emptyGraph.allowsSelfLoops()).isTrue();
    assertThat(emptyGraph.nodeOrder()).isEqualTo(ElementOrder.<String>natural());
  }

  @Test
  public void copyOf_incidentEdgeOrder() {
    ImmutableGraph<Object> graph = ImmutableGraph.copyOf(GraphBuilder.undirected().build());

    assertThat(graph.incidentEdgeOrder()).isEqualTo(ElementOrder.stable());
  }

  @Test

                      throws Exception {
                    assertThat(v1).isEqualTo(closeable1);
                    assertThat(v2).isEqualTo("value2");
                    assertThat(v3).isEqualTo("value3");
                    assertThat(v4).isEqualTo("value4");
                    assertThat(v5).isEqualTo("value5");
                    assertStillOpen(closeable1);

    ListenableFuture<String> f =
        new SimpleForwardingListenableFuture<String>(immediateFuture("a")) {};
    verify(!(f instanceof FluentFuture));
    assertThat(FluentFuture.from(f).get()).isEqualTo("a");
    // TODO(cpovirk): Test forwarding more extensively.
  }

  public void testAddCallback() {
    FluentFuture<String> f = FluentFuture.from(immediateFuture("a"));
    final boolean[] called = new boolean[1];

    service.notifyFailed(new Exception("2"));
    assertThat(service.failureCause()).hasMessageThat().isEqualTo("1");
    IllegalStateException e =
        assertThrows(IllegalStateException.class, () -> service.awaitRunning());
    assertThat(e).hasCauseThat().hasMessageThat().isEqualTo("1");
  }

  private class ThreadedService extends AbstractService {

    ListenableFuture<String> f =
        new SimpleForwardingListenableFuture<String>(immediateFuture("a")) {};
    verify(!(f instanceof FluentFuture));
    assertThat(FluentFuture.from(f).get()).isEqualTo("a");
    // TODO(cpovirk): Test forwarding more extensively.
  }

  public void testAddCallback() {
    FluentFuture<String> f = FluentFuture.from(immediateFuture("a"));
    final boolean[] called = new boolean[1];

          }
        };

    UncheckedExecutionException expected =
        assertThrows(UncheckedExecutionException.class, () -> cache.getUnchecked(new Object()));
    assertThat(expected).hasCauseThat().isEqualTo(cause);

    Object newValue = new Object();
    valueRef.set(newValue);
    assertSame(newValue, cache.getUnchecked(new Object()));
  }

  public void testGetUnchecked_unchecked() {

    assertThat(Ints.indexOf(EMPTY, (int) 1)).isEqualTo(-1);
    assertThat(Ints.indexOf(ARRAY1, (int) 2)).isEqualTo(-1);
    assertThat(Ints.indexOf(ARRAY234, (int) 1)).isEqualTo(-1);
    assertThat(Ints.indexOf(new int[] {(int) -1}, (int) -1)).isEqualTo(0);
    assertThat(Ints.indexOf(ARRAY234, (int) 2)).isEqualTo(0);
    assertThat(Ints.indexOf(ARRAY234, (int) 3)).isEqualTo(1);

    assertThat(UnsignedLongs.divide(14, 5)).isEqualTo(2);
    assertThat(UnsignedLongs.divide(0, 50)).isEqualTo(0);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 0xfffffffffffffffdL)).isEqualTo(1);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffdL, 0xfffffffffffffffeL)).isEqualTo(0);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 65535)).isEqualTo(281479271743488L);

  }

  public void testCount() {
    assertThat(emptyAccumulator.count()).isEqualTo(0);
    assertThat(emptyAccumulatorByAddAllEmptyPairedStats.count()).isEqualTo(0);
    assertThat(oneValueAccumulator.count()).isEqualTo(1);
    assertThat(oneValueAccumulatorByAddAllEmptyPairedStats.count()).isEqualTo(1);
    assertThat(twoValuesAccumulator.count()).isEqualTo(2);