assertEquals("0011", Hexdump.toHexString(data4, 2, 4)); // Bug: ignores srcIndex, reads from 0
    }

    @Test
    @DisplayName("Should perform hexdump with correct formatting")
    void testHexdump() {
        // Capture output
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PrintStream ps = new PrintStream(baos);

        // Test with 16 bytes (one complete line)