while (!q.isEmpty()) {
      assertThat(q).containsExactlyElementsIn(contents);
      Integer next = q.pollFirst();
      contents.remove(next);
      assertThat(q).containsExactlyElementsIn(contents);
      for (int i = 0; i <= size; i++) {
        q.add(i);
        contents.add(i);
        assertThat(q).containsExactlyElementsIn(contents);
        q.add(next);
        contents.add(next);

    }
    List<String> actualKeys = new ArrayList<>();
    multimap.keys().spliterator().forEachRemaining(actualKeys::add);
    assertThat(actualKeys)
        .containsExactlyElementsIn(transform(expectedEntries, Entry::getKey))
        .inOrder();
  }

  public void testEntriesSpliterator() {
    List<Entry<String, Integer>> expectedEntries =
        asList(

    ImmutableSortedSet<String> set = ImmutableSortedSet.copyOf(strings);
    sort(strings);
    for (int i = 0; i < strings.length; i++) {
      assertThat(set.headSet(strings[i], true))
          .containsExactlyElementsIn(sortedNumberNames(0, i + 1))
          .inOrder();
    }
  }

  public void testHeadSetExclusive() {
    String[] strings = NUMBER_NAMES.toArray(new String[0]);

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

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

    putEdge(N1, N2);
    putEdge(N4, N1);

      assertThat(location.scanResources()).containsExactlyElementsIn(resources);
    }
  }

  public void testLocationsFrom_idempotentLocations() {
    ImmutableSet<ClassPath.LocationInfo> locations =
        ClassPath.locationsFrom(getClass().getClassLoader());
    assertThat(ClassPath.locationsFrom(getClass().getClassLoader()))
        .containsExactlyElementsIn(locations);
  }

      assertThat(location.scanResources()).containsExactlyElementsIn(resources);
    }
  }

  public void testLocationsFrom_idempotentLocations() {
    ImmutableSet<ClassPath.LocationInfo> locations =
        ClassPath.locationsFrom(getClass().getClassLoader());
    assertThat(ClassPath.locationsFrom(getClass().getClassLoader()))
        .containsExactlyElementsIn(locations);
  }

    ImmutableSortedSet<Integer> asSet = RANGE_SET_ONE.asSet(DiscreteDomain.integers());
    assertEquals(expectedSet, asSet);
    assertThat(asSet).containsExactlyElementsIn(expectedSet).inOrder();
    assertTrue(asSet.containsAll(expectedSet));
    SerializableTester.reserializeAndAssert(asSet);
  }

  public void testAsSetHeadSet() {

    Object[] lookupKeys = new Object[] {new Object(), new Object(), new Object()};
    Map<Object, Object> result = cache.getAll(asList(lookupKeys));
    assertThat(result.keySet()).containsExactlyElementsIn(asList(lookupKeys));
    for (Entry<Object, Object> entry : result.entrySet()) {
      Object key = entry.getKey();
      Object value = entry.getValue();
      assertThat(result.get(key)).isSameInstanceAs(value);

    return ImmutableGraph.copyOf(graph);
  }

  private static void assertEqualCharNodes(Iterable<Character> result, String expectedCharacters) {
    assertThat(result)
        .containsExactlyElementsIn(Chars.asList(expectedCharacters.toCharArray()))
        .inOrder();
  }

  private static class RequestSavingGraph implements SuccessorsFunction<Character> {

    Object[] lookupKeys = new Object[] {new Object(), new Object(), new Object()};
    Map<Object, Object> result = cache.getAll(asList(lookupKeys));
    assertThat(result.keySet()).containsExactlyElementsIn(asList(lookupKeys));
    for (Entry<Object, Object> entry : result.entrySet()) {
      Object key = entry.getKey();
      Object value = entry.getValue();
      assertThat(result.get(key)).isSameInstanceAs(value);