assertThat(set.headSet(2)).containsExactly(1).inOrder();
    assertThat(set.headSet(3)).containsExactly(1, 2).inOrder();
    assertThat(set.headSet(4)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(Integer.MAX_VALUE)).containsExactly(1, 2, 3).inOrder();
    assertThat(set.headSet(1, true)).containsExactly(1).inOrder();
    assertThat(set.headSet(2, true)).containsExactly(1, 2).inOrder();

            .putAll(table)
            .build();
    assertThat(copy.rowKeySet()).containsExactly('a', 'b').inOrder();
    assertThat(copy.columnKeySet()).containsExactly(1, 2).inOrder();
    assertThat(copy.values()).containsExactly("baz", "bar", "foo").inOrder();
    assertThat(copy.row('b').keySet()).containsExactly(1, 2).inOrder();
  }

  public void testBuilder_orderRowsAndColumnsBy_sparse() {

    assertThat(result).asList().containsExactly("a", "b").inOrder();
  }

  @GwtIncompatible // ObjectArrays.concat(Object[], Object[], Class)
  public void testConcatNonemptyEmpty() {
    String[] result = ObjectArrays.concat(new String[] {"a", "b"}, new String[0], String.class);
    assertEquals(String[].class, result.getClass());
    assertThat(result).asList().containsExactly("a", "b").inOrder();
  }

    assertThat(ImmutableLongArray.of(0, 1).asList()).containsExactly(0L, 1L).inOrder();
  }

  public void testOf3() {
    assertThat(ImmutableLongArray.of(0, 1, 3).asList()).containsExactly(0L, 1L, 3L).inOrder();
  }

  public void testOf4() {
    assertThat(ImmutableLongArray.of(0, 1, 3, 6).asList())
        .containsExactly(0L, 1L, 3L, 6L)
        .inOrder();
  }

  public void testOf5() {

    assertThat(ImmutableDoubleArray.of(0, 1).asList()).containsExactly(0.0, 1.0).inOrder();
  }

  public void testOf3() {
    assertThat(ImmutableDoubleArray.of(0, 1, 3).asList()).containsExactly(0.0, 1.0, 3.0).inOrder();
  }

  public void testOf4() {
    assertThat(ImmutableDoubleArray.of(0, 1, 3, 6).asList())
        .containsExactly(0.0, 1.0, 3.0, 6.0)
        .inOrder();
  }

  public void testOf5() {

            .putAll(table)
            .build();
    assertThat(copy.rowKeySet()).containsExactly('a', 'b').inOrder();
    assertThat(copy.columnKeySet()).containsExactly(1, 2).inOrder();
    assertThat(copy.values()).containsExactly("baz", "bar", "foo").inOrder();
    assertThat(copy.row('b').keySet()).containsExactly(1, 2).inOrder();
  }

  public void testBuilder_orderRowsAndColumnsBy_sparse() {

    top.offer(2);
    assertThat(top.topK()).containsExactly(2, 3, 5).inOrder();
  }

  public void testOfferedKPlusOne() {
    for (List<Integer> list : Collections2.permutations(Ints.asList(1, 2, 3, 4, 5))) {
      TopKSelector<Integer> top = TopKSelector.least(4);
      top.offerAll(list);
      assertThat(top.topK()).containsExactly(1, 2, 3, 4).inOrder();
    }
  }

  public void testOfferedThreeK() {

    assertThat(multimap.get("foo")).containsExactly(1, 3, 7).inOrder();
    assertThat(multimap.get("google")).containsExactly(2, 6).inOrder();
    assertThat(multimap.get("tree")).containsExactly(0, 4).inOrder();
  }

  public void testOrderedKeySet() {
    TreeMultimap<String, Integer> multimap = createPopulate();
    assertThat(multimap.keySet()).containsExactly("foo", "google", "tree").inOrder();
  }

    assertThat(multimap.keySet()).containsExactly("d", "c", "b", "a").inOrder();
    assertThat(multimap.values()).containsExactly(2, 4, 3, 6, 5, 2).inOrder();
    assertThat(multimap.get("a")).containsExactly(5, 2).inOrder();
    assertThat(multimap.get("b")).containsExactly(3, 6).inOrder();
  }

  public void testBuilderOrderKeysByDuplicates() {

    assertThat(multimap.keySet()).containsExactly("d", "c", "b", "a").inOrder();
    assertThat(multimap.values()).containsExactly(2, 4, 3, 6, 5, 2).inOrder();
    assertThat(multimap.get("a")).containsExactly(5, 2).inOrder();
    assertThat(multimap.get("b")).containsExactly(3, 6).inOrder();
  }

  public void testBuilderOrderKeysByDuplicates() {