@Test
    void insertionsort_int_bound()
    {
        int[] input = new int[]{5, 2, 9, 1, 8};

        XSort.insertionsort(input,2,5);

        int[] expected  = new int[]{5, 2, 1, 8, 9};
        Assertions.assertArrayEquals(expected, input);
    }

    @Test
    void insertionsort_int_comparator_bound()
    {
        Integer[] input = new Integer[]{5, 2, 9, 1, 8};

        XSort.insertionsort(input,Comparator.naturalOrder(), 2,5);

        Integer[] expected  = new Integer[]{5, 2, 1, 8, 9};
        Assertions.assertArrayEquals(expected, input);
    }