buffer[i] = (byte) (i * 2);
        }

        // Mock number of links (4 bytes)
        buffer[16] = 0x01;
        buffer[17] = 0x00;
        buffer[18] = 0x00;
        buffer[19] = 0x00;

        // Mock delete pending and directory flags
        buffer[20] = 0x00;
        buffer[21] = 0x00;

        return buffer;
    }

    private byte[] createMockFileInternalInfoBuffer() {

            request.setWriteFlags(0x01);

            // Update parameters
            request.setData(new byte[200], 0, 200);
            request.setOffset(2000L);
            request.setRemainingBytes(1000);
            request.setWriteFlags(0x02);

            // Update file ID
            byte[] newFileId = new byte[16];
            Arrays.fill(newFileId, (byte) 0xFF);
            request.setFileId(newFileId);

        byte[] src = new byte[200];
        // Setup minimal valid header
        src[0] = 0x00;
        src[1] = 0x01; // Transaction ID
        src[2] = 0x00; // Flags
        src[3] = 0x00; // Flags
        src[4] = 0x00;
        src[5] = 0x01; // Question count

        // Act
        int result = nodeStatusRequest.readWireFormat(src, 0);

        // Assert

        assertEquals(0, cap.getValue().length, "Optimistic token must be zero-length");
    }

    @ParameterizedTest
    @ValueSource(bytes = { 0x00, 0x7F, (byte) 0xFF })
    @DisplayName("initSecContext throws on invalid token type")
    void testInitSecContextInvalidTokenType(byte firstByte) throws Exception {
        SpnegoContext ctx = newContext();

     * .
     */
    @Test
    public void testToBinary() {
        assertThat(BinaryConversionUtil.toBinary(null), nullValue());
        final byte[] b = { 0x00, 0x01 };
        assertThat(BinaryConversionUtil.toBinary(b), is(b));
        assertThat(BinaryConversionUtil.toBinary("hoge"), is("hoge".getBytes()));
    }

    /**
     * Test method for

    }

    @Test
    public void testToStringContainsCount() {
        // Little-endian: count = 512 (0x0200)
        byte[] buf = new byte[12];
        buf[0] = 0x00;
        buf[1] = 0x02; // count = 512 in little-endian
        resp.readParameterWordsWireFormat(buf, 0);
        String str = resp.toString();
        assertTrue(str.contains("count=512"), "toString should include numeric count");
    }

    // error classes
    /** Success status code */
    public static final int SUCCESS = 0;
    /** Name service error class */
    public static final int ERR_NAM_SRVC = 0x01;
    /** Session service error class */
    public static final int ERR_SSN_SRVC = 0x02;

    // name service error codes
    /** Format error in the name service */
    public static final int FMT_ERR = 0x1;
    /** Server error in the name service */

            }
        } else {
            // no password in tree connect
            this.passwordLength = 1;
        }

        dst[dstIndex] = this.disconnectTid ? (byte) 0x01 : (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        SMBUtil.writeInt2(this.passwordLength, dst, dstIndex);
        return 4;
    }

    @SuppressWarnings("deprecation")

            }
        } else {
            // no password in tree connect
            passwordLength = 1;
        }

        dst[dstIndex] = disconnectTid ? (byte) 0x01 : (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        writeInt2(passwordLength, dst, dstIndex);
        return 4;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, int dstIndex) {

        // format byte + path + null terminator
        byte[] expected = new byte[1 + dirName.length() + 1];
        expected[0] = 0x04; // buffer format
        System.arraycopy(dirName.getBytes(), 0, expected, 1, dirName.length());
        expected[dirName.length() + 1] = 0x00; // null terminator

        byte[] dst = new byte[100];
        int len = sdd.writeBytesWireFormat(dst, 0);