assertThrows(IllegalArgumentException.class, () -> HashBasedTable.create(100, -5));

    assertThrows(IllegalArgumentException.class, () -> HashBasedTable.create(-5, 20));
  }

  public void testCreateCopy() {
    Table<String, Integer, Character> original =
        create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    Table<String, Integer, Character> copy = HashBasedTable.create(original);
    assertEquals(original, copy);