assertEquals(64, result.length()); // 32 bytes * 2 chars per byte
    }

    @Test
    @DisplayName("Should handle invalid offset and length parameters")
    void testInvalidParameters() {
        // Given
        byte[] data = createTestData(32);

        // When/Then
        assertThrows(IndexOutOfBoundsException.class, () -> {
            Hexdump.toHexString(data, -1, 16);