assertEquals("12345678", Hexdump.toHexString(0x12345678L, 8));
        assertEquals("5678", Hexdump.toHexString(0x12345678L, 4));

        // Test negative values (treated as unsigned)
        assertEquals("FFFFFFFFFFFFFFFF", Hexdump.toHexString(-1L, 16));
        assertEquals("FFFFFFFF", Hexdump.toHexString(-1L, 8));
        assertEquals("FFFF", Hexdump.toHexString(-1L, 4));
    }

    @Test

   * unless the user is actually calling a parse method.
   */
  private static final class ParseOverflowDetection {
    private ParseOverflowDetection() {}

    // calculated as 0xffffffffffffffff / radix
    static final long[] maxValueDivs = new long[Character.MAX_RADIX + 1];
    static final int[] maxValueMods = new int[Character.MAX_RADIX + 1];