assertThrows(IndexOutOfBoundsException.class, () -> checkElementIndex(1, 1, "foo"));
    assertThat(expected).hasMessageThat().isEqualTo("foo (1) must be less than size (1)");
  }

  public void testCheckPositionIndex_ok() {
    assertEquals(0, checkPositionIndex(0, 0));
    assertEquals(0, checkPositionIndex(0, 1));
    assertEquals(1, checkPositionIndex(1, 1));
  }

  public void testCheckPositionIndex_badSize() {