table.put("cat", 8, 'd');
    assertThat(table.rowKeySet()).containsExactly("foo", "cat", "bar").inOrder();
    assertThat(table.row("foo").keySet()).containsExactly(12, 3).inOrder();
  }

  public void testCreateCopy() {
    TreeBasedTable<String, Integer, Character> original =
        TreeBasedTable.create(Collections.reverseOrder(), Ordering.usingToString());
    original.put("foo", 3, 'a');
    original.put("foo", 12, 'b');