@DisplayName("Should handle edge cases in toHexChars")
    void testToHexCharsEdgeCases() {
        // Test with zero
        char[] dst1 = new char[4];
        java.util.Arrays.fill(dst1, 'X');
        Hexdump.toHexChars(0, dst1, 0, 4);
        assertEquals("0000", new String(dst1));

        // Test with all F's
        char[] dst2 = new char[8];
        Hexdump.toHexChars(0xFFFFFFFF, dst2, 0, 8);